US20250367539A1

US20250367539A1 - Smart chess board system and method with situationally conscious smart chess pieces

Info

Publication number: US20250367539A1
Application number: US19/297,398
Authority: US
Inventors: Pulkit Ahuja
Original assignee: Individual
Current assignee: Individual
Priority date: 2024-08-12
Filing date: 2025-08-12
Publication date: 2025-12-04
Also published as: WO2026038259A1

Abstract

A chess board game apparatus (100) and system (200) are disclosed that provides chess pieces that are situationally aware and may change their colours during the game based on certain triggers, manual interventions, player selection, game preferences, AI inputs, strategical manipulations, specific moves or game plays, et cetera with or without impacting the winning probability of either of the players post such a trigger. Thus, the game apparatus (100) and system (200) enable dynamic mid-game switching of chess piece colours and allegiance without altering the fundamental rules of chess. The system (200) incorporates user interface, processing, and communication modules for local or remote play, and may operate in physical, digital, or hybrid modes. The present disclosure also discloses a method (300) implements gameplay monitoring, eligibility assessment, and controlled switching of piece allegiance. A standalone smart chess piece and a control unit executing stored instructions are also disclosed.

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to the field of board games, and more particularly to a chess board game apparatus, system, and method in which the game pieces are situationally aware and capable of being manipulated to change their colours, and thereby their team allegiance, during gameplay. Such colour changes may be triggered by predefined rules, manual interventions, player selections, game preferences, AI inputs, strategic manipulations, specific moves, or other gameplay events, with or without altering the winning probability of either player following the trigger.

BACKGROUND

Traditional chess has been played for approximately 1400 to 1500 years and is widely regarded as a pure skill-based strategic game. Over time, several variations such as Blitz Chess, Bullet Chess, Rapid Chess, Bughouse, Three-Man Chess, and Hexagonal Chess have been introduced to increase its appeal. Such variants have experimented with faster time controls, modified board shapes, additional or altered pieces, and variations in the number of players, and so on. While such variants bring novelty and certain new challenges, they tend to largely focus on altering game speed, the number of pieces, or board configurations, following a predictable and structured pattern. Such variants do not incorporate ad-hoc unknown variables which are witnessed in actual world strategies. However, Chess being a strategy game, such existing variations which have been developed lack in providing an instant change of the base premise of the game itself.
Chess has thus remained a largely static game, whereas in real-world strategic environments such as warfare, business negotiations, political maneuvering, and battlefield alliances-scenarios are often shaped by deceit, deception, betrayal, and sudden changes of allegiance. Such dynamic shifts in loyalty, which have shaped much of history, are absent in traditional game of chess. Existing variants assume permanent loyalty of each piece to its player's side and rely solely on the player's skill, without incorporating an element of chance or luck, which in many other sports, such as cricket or football, adds to the excitement, addiction, and mass appeal.
Thus, a chess game where the pieces are situationally conscious and may be made to change sides by either manipulation, rules or sheer luck is an entirely new form of chess play which brings the game of chess up to date with the last 2000 years of modern history in business strategy, political strategy and war strategy.
The current system of Chess referred to as Caesar's Chass has been designed to replicate this 2000 years of actual world history using various triggers that may or may not change either players' probability of winning based on certain game settings selection.
Certain prior art exists in related areas but fails to address this requirement. For example, AI-based chess puzzle games start from a partial board configuration and allow only a limited set of moves, such as swapping two pieces, to achieve checkmate in the fewest moves. These are puzzle formats, not full competitive games, and they lack any dynamic mid-game switching of allegiance. Multi-player chess variants, including three-player or hexagonal-board versions, offer fresh tactical challenges but still maintain fixed piece loyalties, deriving unpredictability only from the presence of multiple opponents. Thematic or fantasy chess sets sometimes feature pieces that transform in appearance for aesthetic reasons, but these changes have no impact on gameplay. Even electronic chess boards capable of tracking piece positions and transmitting moves to connected devices use this functionality purely for recording or online play, without integrating allegiance-switching or colour-changing mechanisms.
No known chess game-whether physical or digital combines situationally aware, allegiance-switching pieces with diverse in-game or external triggers, automatic colour-change mechanisms, probability-based fairness algorithms to maintain competitive balance, and token-based defensive mechanics enabling players to protect critical pieces.
Therefore, there is a need for a chess variant that preserves the core rules and spirit of the game but introduces situationally driven changes in piece allegiance, thereby adding an entirely new dimension of strategy, unpredictability, and excitement. The present invention fulfils this need by providing a chess board game apparatus, system, and method that retains traditional chess rules while introducing controlled unpredictability inspired by real-world strategy, thereby transforming the static nature of chess into a dynamic and engaging experience.
Therefore, there exists a need to solve the aforementioned issues.

OBJECTS OF THE PRESENT DISCLOSURE

The principal object of the present disclosure is to provide a chess board game, in either physical or digital form, that is modified to replicate real-world tactics of deception, backstabbing, and switching of sides between teams, countries, corporations, or other opposing entities, without altering the fundamental rules of traditional chess. This allows players to enjoy a fresh, dynamic experience without having to learn new rules or change their playing style, strategies, or methods. The disclosure thereby introduces an element of chance or luck into an otherwise purely skill-based strategic game.
Another object of the disclosure is to provide a game system wherein players are equipped with a switch or trigger that may be used to initiate a “colour switch” or “backstabbing” or “Caeser's Switch” or “allegiance switch” event at any point in the game, causing one or more pieces to switch their colours, thereby changing their allegiance from one player to another while remaining at their current positions on the board. Such a system is intended to add unpredictability and force both players to adapt their strategy instantly, even if they had been planning several moves ahead.
A further object is to enable such allegiance-switching triggers to be automated, player-initiated, time-based, rule-based, situation-based, probability-based, move-based, AI-based, or random-luck-based, thereby allowing flexible and varied gameplay experiences. The control unit may be configured to apply preset parameters, such as win probability change limits, mutually agreed upon before gameplay, to maintain fairness.
Another object is to incorporate into the game a token-based defensive mechanism, whereby each player is allocated a fixed number of replenishable or non-replenishable tokens at the start of a match. These tokens may be used within a set time window (for example, five seconds) after a switch event is indicated, to prevent a critical piece from changing sides. This allows for tactical decision-making, as players must prioritize the pieces they most need to protect.
An additional object is to provide a carry-forward mechanism for unused tokens in tournament settings, and in the case of digital embodiments, to enable tokens to be purchased, gifted between players, or distributed as referral rewards, thereby adding both tactical and commercial value to gameplay.
Yet another object of the disclosure is to provide a smart chess board apparatus integrated with piece-tracking and identification systems, inductive or direct powering mechanisms, and communication modules, together with intelligent chess pieces containing colour-changing modules, communication receivers, and power storage components. The system should be capable of controlling the visual allegiance of pieces in real time during gameplay.
A further object is to provide a smart chess piece formed at least partially of transparent or translucent material, incorporating one or more colour-changing mechanisms such as LEDs, e-ink displays, prismatic displays, polarised film assemblies, electro-mechanical actuators, thermochromic or photochromic materials, ferrofluid-based visual systems, liquid column displays, or combinations thereof, together with communication and power modules for receiving and executing control signals from the game board.
Another object is to provide a method of playing a chess game using the disclosed apparatus and system, wherein gameplay proceeds according to standard chess rules while incorporating the dynamic allegiance-switching events described above, with switching eligibility determined by preset rules and fairness algorithms to ensure competitive balance.
Another object is to provide a method for controlling a chess game using the disclosed apparatus and system, wherein gameplay proceeds according to standard chess rules while incorporating the dynamic allegiance-switching events described above, with switching eligibility determined by preset rules and fairness algorithms to ensure competitive balance.
A still further object is to provide a computer program product comprising a non-transitory computer-readable medium storing instructions that, when executed by a processor, enable the system to track game state, evaluate triggers, determine eligible pieces for switching, enforce probability thresholds, execute visual allegiance changes, manage token usage, and update game status accordingly, in both physical and digital implementations.
An additional object is to ensure that the disclosed apparatus, system, and method may be adapted for use in other board games where piece status or colour may change during gameplay, thereby extending its applicability beyond chess.

SUMMARY

In an aspect, a chess board game apparatus (100) is disclosed. The apparatus (100) includes a game board (102) having a plurality of squares. There is a plurality of chess pieces (104), each of which includes a body (106) formed of a light-transmissive material. The body (106) has at least a portion transparent or translucent so as to permit visual perception of a color change produced by a color-changing module. There is a communication receiver (112) to receive control signals, a power source, a piece-tracking and identification system integrated into the game board (102) and a control unit (126) housed within or operatively connected to the game board (102). The control unit (126) includes a microcontroller or processor (128) associated with a plurality of modules. The modules include such as but not limited to a trigger detection module (130), an eligibility and fairness module (132), a communication module (134), and a power management module (136). The control unit (126) is configured to monitor gameplay, detects a switching trigger event, identifies eligible chess pieces (104) for switching, and transmits control signals to the color-changing modules of the eligible chess pieces (104) to change their color and switch allegiance thereof from a first state indicating allegiance to original player to a second state indicating allegiance to the opponent player during gameplay, in response to one or more predetermined trigger conditions.
In an aspect, the control unit (126) implements a token-based blocking of the switching event mechanism. Each player is allocated a predefined number of tokens at the start of a match to prevent an impending piece switch within a predetermined time window after an indication of the switch. The tokens are either replenishable or non-replenishable during a match, optionally transferable between matches in a tournament setting, and optionally available in a digital version of the game based on preset rules agreed between both the players. The eligibility and fairness module (132) permits switching only when the calculated change in win probability for any player does not exceed a predefined threshold agreed upon before gameplay or determined by the rules or fairness engine.
In another aspect, each chess piece (104) is operable as a standalone smart chess piece. The smart chess piece (104) includes a body (106) having at least a portion transparent or translucent to enable visual perception of a color change produced by a color-changing module during side switching event, and a communication receiver (112) for receiving control signals from a compatible game board or system, a power source, and an identification element to enable recognition and interaction with a compatible chess board game apparatus (100) or chess board game system (200).
In another aspect, a chess board game system (200) includes a game board (102) having a plurality of squares, a plurality of chess pieces (104), each comprising a body (106) formed of a light-transmissive material. The body (106) has at least a portion transparent or translucent to permit visual perception of a colour change produced by a colour-changing module, a communication receiver (112) to receive control signals, and a power source, a power source to supply power to at least one of the chess pieces (104) and the game board (102). The system (200) includes a piece-tracking and identification system integrated into the game board (102), a control unit (126) comprising a microcontroller or processor (128) operatively associated with a trigger detection module (130), an eligibility and fairness module (132), a communication module (134), and a power management module (136). The control unit (126) includes a user interface module (202) to set game preferences including switching trigger types, win-probability thresholds, switch event indications and token allocations, a processing module (204) to execute gameplay logic, track the state of the chess board, and implement switching events, a communication interface (206) to enable wired or wireless communication with an external device (208); and a data storage module (210) to store game configurations, player profiles, gameplay history, and switching event logs. The system (200) is operable in a physical mode with tangible chess pieces (104) or a digital mode with virtual chess pieces rendered on a display. The switching of chess pieces' allegiance is initiated, validated, and executed based on the preset game preferences and detection of a switching trigger event.
In another aspect, a method (300) for controlling a chess board game system (200) is disclosed. The method (300) involves providing the game board (102) and chess pieces (104), followed by tracking the location and identity of each chess piece (104) using the piece-tracking and identification system. The method (300) involves monitoring gameplay to detect a switching trigger event, followed by determining eligible chess pieces (104) for switching, generating and transmitting control signals to the communication receivers (112) of the eligible chess pieces (104). The method (300) involves activating the colour-changing modules of the eligible chess pieces (104) to alter visible allegiance while retaining their positions, followed by maintaining updated gameplay status for subsequent analytics, playback, or remote synchronization. The method (300) enables dynamic mid-game switching of chess piece allegiance without altering the fundamental rules of chess.
In another aspect, a control unit (500) for a chess board game apparatus (100) or chess board game system (200) is disclosed. The control unit (500) comprising one or more processors (502) and a memory storing instructions which, when executed by the one or more processors (504), cause the control unit (500) to track, by a piece-tracking and identification system (506) integrated into a game board (102), a location and identity of each chess piece (104); monitor gameplay to detect a switching trigger event; determine chess pieces (104) eligible for switching; generate and transmit control signals to communication receivers (508) of the eligible chess pieces (104); and activate colour-changing modules (510) of the eligible chess pieces (104) to alter a visible allegiance thereof. The control unit (500) includes execution of the instructions enables dynamic mid-game switching of chess piece allegiance without altering fundamental chess rules.

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features, and advantages of the embodiment will be apparent from the following description when read with reference to the accompanying drawings. In the drawings, wherein like reference numerals denote corresponding parts throughout the several views:

Referring to FIGS. 1A and 1B, illustrates a schematic top and bottom view of a chess board game apparatus (100) respectively;

Referring to FIG. 1C, illustrates different modules of a control unit (126);

Referring to FIG. 2 , illustrates a schematic block diagram of a chess board game system (200) showing various modules;

Referring to FIG. 3 , illustrates a flow diagram of a computer-implemented method (300) for controlling the chess board game system (200);

Referring to FIGS. 4A-4B, illustrates a schematic block diagram of a smart chess piece (400).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The present disclosure relates to an advanced chess board game platform that introduces an additional dimension of controlled unpredictability and strategic depth by allowing chess pieces to visually switch allegiance during an ongoing match, without altering the conventional movement rules of chess. This capability encourages strategic adaptability on the go, player engagement, and innovative gameplay dynamics across physical, digital, and hybrid formats. These betrayal events, or the “Caeser's Switch” event occurs based on predefined, player-selected or random triggers and introduce controlled unpredictability into traditional chess mechanics. In the board game (100), a white piece changes its colour and turns into a black piece, and vice versa based on certain triggers. Throughout the game, either automatically, or by predefined triggers including such as but not limited to number of moves played, number of pieces left on board, time intervals, AI based, or any such factor, some of the pieces from both sides will change their colours. The disclosure may be embodied as a complete hardware apparatus, a combined hardware-software system, a software-only platform, or as individual smart chess pieces capable of integration into various board configurations.
In one embodiment, the chess board game apparatus (100) (FIGS. 1A and 1B) comprises a game board (102) configured with a plurality of squares arranged in the traditional 8×8 grid, as shown in FIG. 1 . The game board (102) may be fabricated from rigid materials such as wood, high-density polymer, acrylic composites, or carbon-fibre-reinforced plastics, and may include an integrated electronics compartment beneath or within the playing surface to house power, processing, and communication modules. Embedded within the board (102) is at least one piece-tracking and identification system configured to detect both the position and identity of each chess piece (104) in real time. Such systems may include, but are not limited to: infrared (IR) blaster (116), optical sensor (118) combinations for line-of-sight detection; reed switch (120), magnet (122) pairings for mechanical detection; near-field communication (NFC) tag-reader systems for digital identification; or pressure sensor (124) arrays integrated into each square to detect piece placement. Such sensing subsystems may operate independently or in combination, allowing for redundancy and improved detection accuracy.
A plurality of chess pieces (104) is provided, details thereof discussed herein after in conjunction with different embodiments in FIGS. 4A-4D.
The manual input is provided via a physical button, mouse click, keyboard selection, holographic display, touchscreen interface, voice command, or a connected remote device.
The control unit (126) (FIG. 1C), integrated within the board or in a separate housing, comprises a microcontroller or processor (128) and a plurality of functional modules, as shown in FIG. 2 . A trigger detection module (130) monitors gameplay for the occurrence of a switching event trigger or a “Caeser's Switch” event. Trigger events may include manual player input, pre-set time intervals, specific move counts, probability-based conditions, artificial-intelligence-determined scenarios, or randomly generated events. An eligibility and fairness module (132) calculates switching eligibility by evaluating preset rules, player-defined parameters, and win-probability thresholds determined prior to or during gameplay. This ensures that switching does not produce an overwhelming advantage for one player. A communication module (134) transmits control signals to the communication receivers (112) in selected chess pieces (104). A power management module (136) regulates energy delivery to both the chess pieces and the board's onboard components to ensure operational longevity.
The chess board game system (200) (FIG. 2 ) extends the apparatus by incorporating additional modules for broader gameplay management. A user interface module (202) provides local or remote access for configuring gameplay parameters including trigger selection, token allocation for blocking switches, and statistical thresholds. The processing module (204) executes the core game logic, integrates with AI algorithms for probability analysis, and maintains a continuously updated game state. The user interface module (202) enables token-based prevention of piece switching. The tokens being limited in number per game and optionally carried forward or purchased in a tournament mode. The processing module (204) incorporates an artificial intelligence engine to predict move outcomes and determine switching trigger events based on probability analysis.
A communication interface (206) enables wired or wireless data exchange with external devices (208) such as tablets, smartphones, PCs, or cloud servers, supporting local multiplayer, remote play, or tournament hosting. The data storage module (210) stores player profiles, game settings, historical gameplay records, analytics, and switching event logs for review or replay. The system may operate in physical mode with tangible pieces, digital mode with virtual chess pieces displayed on a screen, or hybrid mode wherein a physical board is mirrored on a digital interface for remote viewing or participation.
In an aspect, the present disclosure discloses a chess board, either physical or digital, where the pieces may be manipulated to change sides and are situationally conscious (100).
In the present invention, certain pieces change their colour or allegiance (switch from one player's control to the other) while the match or game play is ongoing by switching colour, effectively changing sides. Such betrayal events occur based on predefined or player-selected triggers and introduce controlled and planned unpredictability into traditional chess mechanics. These betrayal events are interchangeably called “Caeser's Switch”, “Backstabber's Switch”, “Colour Switch” or “Allegiance Switch”.
At the start of each match, players configure core game settings, including but not limited to the type of switch trigger, which could be time-based, move-based, player-initiated, compute-initiated or random trigger. The player also decides the switching mode of the pieces, that is, whether it happens sequentially or simultaneously, wherein “sequential switching” would alternate change of sides and colour between the white and the black pieces on the occurrence of every trigger but always just one piece at a time, and “simultaneous switching” would mean that both the white and the black teams' pieces swap their allegiance at the same time.
Also, the players may decide whether tokens may be used in a given match and their availability, and whether the match is against another player or a bot.
The game begins as a standard chess match. Players alternate turns under classical rules. When a betrayal event occurs or a trigger is activated, eligible pieces are highlighted and a timer countdown begins. During this window, either player may use a “token” to block the switch. If no token is used, the selected piece(s) switch sides and the turn proceeds. The switched pieces are now controlled by their new players. The match continues until checkmate, draw, or resignation. To ensure competitive balance throughout the match, multiple backend mechanisms and logics are employed. These include but not limited to a dynamic win probability calculator on each move and on each switch, wherein the winning probability of both the players is constantly monitored and it is ensured that post the piece's side switch, there is no sudden change in the winning or losing probability of either team.
The range of winning or losing probability change on any piece switch for either player allowed may be mutually decided by the players before the start of the match. For example, if the players decide or select this threshold to be 20%, any switch of pieces that happens either sequential or simultaneous would be done ensuring that the winning or losing probability change of either player before and after the switch is not more than 20%.
The system (200) is operable in a hybrid mode where the physical chess board game apparatus (100) is synchronised with a digital display for remote or online gameplay.
Another embodiment employed to ensure competitive fairness is the eligibility validation logic for each piece, wherein pieces at certain positions on the board, are checked for their “switching eligibility”, which comprises of numerous sub-logics such as but not limited to their proximity to their king, proximity to the opponent's king, proximity to their starting positions or end squares for conversion of pawns, etc. This allows the system to decide whether the piece is a restricted piece or not. A restricted piece's colour change would affect the game's outcome drastically. Unless and until agreed by both players at the start of the game, the colour switch of restricted pieces would not be implemented during the game play. In such a scenario where colour change of restricted pieces is agreed by both players, the match of chess becomes synonymous to real world scenario of business, war and politics where strategy, luck, chaos and chance; all these elements come together to form a unique and uncontrolled scenario in every iteration of the game play.
In case there is minimal change in the game's winning percentage, the piece may be considered eligible for a colour switch in the default setting without the restricted piece switch allowed.
To further maintain competitive balance, the invention optionally provides players with defensive resources to counteract betrayals. The availability of defensive tokens is another measure to ensure that the players have a manual override on the game's unique mechanics of the piece's team switching events. These systems work in tandem to prevent gameplay-breaking shifts while maintaining the integrity of surprise and randomness-based tactics, thus ensuring a controlled unpredictability throughout the game.
The present invention provides a new dynamic variation of the age-old classic but static game of chess inspired by the real-life scenarios of deceit, deception and practicality. The invention encompasses both physical and digital implementations of Caesar's Chess. It is available to be played on digital interfaces, websites, apps and specialised physical boards using innovative physical chess pieces which have the ability to switch their colours from black to white and vice-versa instantaneously. These chess pieces are able to communicate with the chess board they're placed on, which houses the computational module, piece tracking apparatus, power relays, user interaction interface and other necessary components for the game's proper functionality in the physical format.
In a nutshell, the present invention a novel twist to chess by allowing pieces to betray their owners under controlled conditions, supported by specialized hardware and software that manage these events. The invention includes the physical components (smart board and pieces), the logical system (control unit and algorithms for triggers and fairness), and the rules and methods of gameplay that together create a balanced yet unpredictable chess experience. This new chess variant brings elements of chance and real-world strategic drama to the game, greatly increasing its excitement and replay value while preserving its intellectual challenge.
In the computer-implemented method (300) as shown in FIG. 3 , gameplay is dynamically influenced by mid-match changes in piece allegiance. The method (300) involves tracking the location and identity of each chess piece (104) through the integrated tracking system, detecting a trigger event using the control unit, determining eligible pieces based on preset criteria, generating and transmitting control commands to the relevant pieces, and activating their colour-changing modules to visually indicate an allegiance change while retaining their positions. The updated game state is stored in the data storage module (138) for analytics, replay, or synchronisation with a digital interface. In certain variations, the method also generates pre-switch notifications, enabling players to expend limited-use tokens to block impending switches of critical chess pieces.
In another embodiment, a standalone smart chess piece (400 or 104) (FIG. 4 ) is provided. The chess piece (400) includes a body (402) formed from a light-transmissive material such as polycarbonate, acrylic, glass, or resin composites. At least a portion of the body (402) is transparent or translucent to allow visual perception of colour changes. The body (402) includes a hollow cavity (406) that has a colour-changing module (408) such as Ultra-wideband (UWB) technology and Bluetooth Low Energy (BLE) beacons or LEDs. There is tilt switch (414) in proximity to the colour changing module (416), and a capacitor (418) to store energy. The colour-changing module (408) is capable of producing a visible alteration in the colour of the chess piece. The module (408) may be realised using various technologies including RGB LED arrays for dynamic colour output, e-ink displays (414) for low-power bistable operation, prismatic optical elements, polarised film assemblies, electromechanical rotors carrying coloured discs, thermochromic or photochromic materials, electroluminescent panels, ferrofluid-based actuators, or liquid column displays. The choice of technology may depend on power availability, cost considerations, and desired visual effect.
Each chess piece (400) (FIGS. 4A and 4B) further includes a communication receiver (112) to receive wireless control signals from the control unit (126) or external devices. Communication may be enabled through Bluetooth, Wi-Fi, ZigBee, NFC, or infrared protocols. Power may be supplied through an onboard rechargeable battery, a capacitor (114) for rapid charge-discharge cycles, or an inductive power receiver enabling wireless charging when the piece is placed on the board. In certain embodiments, the pieces may draw power directly from the board through conductive contacts embedded in each square. The switching trigger event is selected from one or more of a manual input, a time-based event, a rule-based condition, a probability-based condition, a move-based condition, an artificial intelligence-based determination, a random luck-based event, or a combination thereof.
The piece includes a body (402) of light-transmissive material, a colour-changing module (404), a communication receiver (406), and a power source (408). The piece may be used independently with any compatible board or system, enabling incremental upgrades to conventional chess sets. In one scenario, such pieces may be supplied as an aftermarket kit to retrofit traditional boards with the dynamic switching capability.
In another physical embodiment, multiple concentric cylinders constitute the piece. The outer cylinder features windows on its surface, or through and through cutaways which shows the inner cylinder. The outer cylinder is of a neutral colour such as grey. The inner cylinder is patterned with alternating black and white stripes. In one orientation of the cylinder, the white stripes are visible through the windows of the outer cylinder; when rotated to a specific angle. This gives the piece an appearance of being a white piece. On further rotating either of the cylinders, the black stripes become visible through the windows of the outer cylinder, giving the piece a black appearance. A small motor or an actuator allows for the rotation of the cylinders. thereby enabling a visible switch in the piece's colour.
In another embodiment, multiple concentric cylinders, each lined with alternating polarized film segments form the chess piece. In the piece's default state, the films are aligned with each other in such an orientation which allows for light to pass through, rendering the cylinder transparent, and in turn giving the piece a “light” or a “white” appearance. When the orientation of the cylinders is changed with respect to each other by using an integrated motor or an actuator, the overlapping polarized films block light passing through the otherwise transparent chess piece body, making the piece appear “dark” or “black”. This enables the piece to switch between its two-colour states.
In another embodiment, the chess piece is made of a cylinder made of electrically polarized film. In the default state of the piece, the polarised film allows light to pass through it and gives the piece a transparent appearance, due to which the piece appears to be “white”. When a specific voltage is applied to the polarised film, the film gets activated and blocks light, turning the piece visually black. This mechanism enables a clear distinction between black and white states of the pieces placed on the board.
In another embodiment, the chess piece is made of a transparent cylinder or a tube filled with a clear solution. the transparent tube is filled with iron filings or any other dark coloured ferromagnetic material. An electromagnet is positioned at the top of the tube. In the inactive state of the piece, the magnet is powered off and the tube remains clear, all the ferromagnetic material settled at the bottom. When the magnet is powered on, thereby “activating” the piece, the electromagnet attracts the ferromagnetic material upwards through the liquid solution, visually filling the tube and turning it dark. As long as the electromagnet stays powered, the ferromagnetic material remains suspended throughout the chess piece thereby giving it a starkly different appearance than the deactivated pieces, making the differentiation between the pieces easy.
In another embodiment, a transparent tube is filled with a solvent such as water, glycol, or glycerin, containing suspended coloured particles. A vibration motion is applied at the base using a vibration motor or an actuator, causing the glitter to disperse and fill the tube, creating a darkened appearance. When the motion stops, the coloured particles settle down at the bottom and the tube becomes clear again, thereby appearing white.
In another embodiment, a transparent cylinder contains a solvent and coloured particles. A mist maker actuator placed at the base of the cylindrical container agitates the liquid, pushing the coloured particles upward and filling the tube to create a darker appearance. When the mist maker actuator is inactive, the particles settle down at the bottom of the cylindrical container, rendering the tube transparent. When the mist maker actuator is activated, the tube appears darker due to the coloured particles being suspended in the viscous liquid. When the mist maker actuator is inactive, the particles settle down at the bottom of the cylindrical container again, restoring the tube's transparent appearance.
In another embodiment, the chess piece is coated or filled with thermochromic material, or photochromic material, or electroluminescent ink, or a combination of these materials which allows the piece to change its appearance when subjected to different physical factors such as exposure to UV light, temperature change, et cetera. This chess piece also houses an electronic component at its base such as a heating element, or a UV light source, or a voltage connection. When heated using the heating coil, or exposed to UV light, or given a voltage, the material changes its colour, thereby the chess piece also appears to change its colour either from black to white, or vice versa.
In another embodiment, a transparent tube runs through the chess piece made of a transparent material, with its one end connected to the base of the piece. The base of the piece has a chamber filled with black liquid. A hydraulic press or bladder system exerts pressure to push the black liquid into the tube, filling it up end to end, thereby giving a black appearance to the piece. When pressure is released, the liquid is drawn back into the chamber, and the tube returns to a transparent state therefore making the chess piece appear white.
Alternative embodiments may include: (i) an AI engine trained to predict switching impact and adjust triggers dynamically; (ii) a multi-board tournament mode where colour switching occurs across linked games; (iii) a training mode where switches are triggered at low probability to teach adaptability; (iv) integration with online platforms to stream live gameplay with real-time allegiance changes; and (v) themed visual effects in the colour-changing modules for different game modes or tournaments. Manufacturing variations may include sealed waterproof casings for outdoor use, modular battery packs for quick replacement, and customisable LED lighting patterns.
In operation, the disclosure may be applied to physical, digital, or hybrid chess matches. For example, in a time-based embodiment, the control unit (126) is preconfigured to trigger every ten moves. After a set number of moves, the eligibility and fairness module identifies one rook and one bishop whose switch would keep the win-probability change within the permitted threshold. The communication module sends signals to these pieces, their colour switching apparatus changes from white to black, and players must instantly adjust strategies. In a digital-only embodiment, a virtual board displayed on a mobile device display executes identical logic to alter the on-screen representation of affected pieces, maintaining parity with the physical version of the disclosure.
At the start of each match, players configure multiple core game settings in either a sequential or a desired manner to define their gameplay experience. These settings include but are not limited to the type of switch trigger, which could be time-based, move-based, player-initiated, or random trigger. The type of switch trigger defines how the Ceaser's Switch event occurs, whether it would be manually initiated by a player at any point during the game, or would it be time based, where after every specific interval of time the switching event occurs.
The trigger event could also be move based, where the switch event may happen after every set number of moves. The random trigger type generates a combination of random events which triggers the switching event. This random event is calculated on the backend by logics. The compute unit picks up a random event type, which may be a time event, a move event, or a combination of both the events, and then generates random numbers for each. This results in a very random set of trigger events which may be either time based, move based, or a combination of both and the numbers assigned with each event defines its occurrence throughout the game.
The players may also decide the switching mode of the pieces, that is, whether it happens sequentially or simultaneously. The “sequential switching” alternates the switching to occur between the two teams, and the “simultaneous switching” enables the pieces from both the white and the black teams' to switch their allegiance at the same instance.
The players also decide the token availability throughout the game. Each player is granted a set number of tokens at the beginning of each match (when the token mechanics is enabled). When a Caeser's switch event occurs, the affected piece(s) are highlighted and a countdown timer begins. This countdown window allows the player to observe the board, understand the pieces which are going to change their teams, and take a decision of whether they'd want to use one of the tokens from their limited number of tokens to maycel the piece from changing its colour or not. These tokens may be used to inhibit the Caeser's switch event in case a player is about to lose a critical piece to the other player. In another embodiment, these tokens may also be used to bring back the lost piece to their team, in a way undoing the Caeser's Switch event, based on backend game logics and rules.
The player interacts with a physical or a digital element on their board or screen, depending upon whether they are playing on a physical board or a digital device to use their token within the countdown timer window to block the switch move. This brings a thrill and risk to the game. The tokens are single-use and may not be recovered once used. If no token is activated within the time window, the betrayal and side switch is executed and the piece switches allegiance. In simultaneous betrayal events, if one player blocks the switch, the entire event is cancelled. When the game is being played on cloud, either by connecting the board to the internet or on their digital devices, the player may save their tokens in their online game wallet to be used in future matches.
If the user wins a match, they could be awarded with complimentary tokens. If a user loses all their tokens, they may purchase more through the connected online shop by accessing it through their digital devices and logging in using their gaming credentials. Tokens are disabled in player-initiated mode, as betrayal is no longer a surprise but in player's control. Lastly, the player decides whether they would like to play the match against a bot, online, or couch co-op.
To ensure competitive balance and ensure that the game is fair to both the players, multiple backend logics and mechanisms are employed. These include a win probability calculator, eligibility validation logic for each piece, and the availability of the defence tokens. These systems work in tandem to prevent gameplay-breaking shifts while maintaining the integrity of surprise-based tactics.
When a betrayal, or a Ceaser's switch is triggered, all potential switching candidates are evaluated using preset eligibility rules. Pieces are selected for switching only if the resulting change affects the win probability by no more than a certain value. If no eligible piece meets this threshold, the system aborts the betrayal and displays a message indicating that no eligible switch is possible at the moment, thereby continuing the game as it is. This threshold of the win probability window is adjustable and customisable. A suitable range to maintain fairness and drama is preferrable. Narrower thresholds, such as ±3%, result in fewer or inconsequential switches. Wider thresholds, such as 15%, may drastically alter the game's competitive balance.
The preset eligibility rules are a set of logics and rules which the game engine follows before initiating a switching event of any piece on the board. This ensures that the game doesn't break and none of its rules are changed from the classic game of chess. When simultaneous two pieces are selected for colour switch, both the pieces need not be of the same type. For example, a white bishop and black knight may be selected for switching. Kings are permanently ineligible to switch sides. Pieces located on their starting rank for first n number of moves are not considered for betrayal, preventing confusion in early-game movements such as double-step pawn advances. Promoted pieces (e.g. a pawn promoted to a queen) are also ineligible to switch. Some pawn specific rules are that the pawn situated on its starting, penultimate or final ranks, or after getting promoted is considered an illegible for switching. Some other logics behind eligibility rules are that once a piece switches, it may not switch again, any piece within a certain proximity to their own king may not switch and if a piece may cause check if flipped, will be considered illegible by the game engine. If the logic doesn't find an eligible piece, it skips the colour change, continuing the game as it is. The kings are exempt from switching under all circumstances. No betrayal event may directly or indirectly result in a check against the king. Squares in close proximity to the king are protected from betrayal to maintain positional safety. The betrayal system is designed to avoid excessive or chaotic reversals. Defensive tokens further ensure that key assets may be protected during high-risk phases of play.
The game rules of the classic game of chess are maintained throughout the Caeser's chess game. In case of castling, if a rook switches sides during the game, the original side loses the right to castle with that rook. Standard castling conditions remain intact otherwise, and the betrayal mechanic is designed not to interfere with eligibility requirements. In case of “en passant”, a pawn that has just performed a double-step move becomes ineligible for en passant capture if it subsequently switches sides. Any pending en passant opportunity involving that pawn is cancelled following the betrayal event. In a double switch scenario, that is, simultaneous betrayal events, opposing pieces may switch sides and immediately create tension or capture opportunities. However, the pieces remain in place; only their allegiance is altered. A switched piece that was previously pinned may suddenly expose its former king to attack. For example, a knight betrayal may reveal a check from a bishop. The system checks such scenarios, and tokens may be used to prevent such critical tactical flips. These regular gameplay rules and mechanics ensures that the player is not being subjected to learning any new rules to initiate playing the game, enabling anybody with basic knowledge of the game of chess to play Caeser's Chess as well.
The computer program product includes a non-transitory machine-readable medium storing instruction that, when executed by one or more processors of the control unit, perform the above method steps. This allows the disclosure to be implemented entirely in software for virtual chess environments, in combination with physical components, or as firmware embedded in dedicated chess hardware.
The foregoing descriptions of exemplary embodiments of the present disclosure have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed, and obviously many modifications and variations are possible in the light of the above teachings. The exemplary embodiments were chosen and described in order to best explain the principles of the disclosure and its practical application, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

We claim:

1. A chess board game apparatus (100) comprising:

a game board (102) having a plurality of squares;

a plurality of chess pieces (104), each chess piece (104) comprising a body (106) formed of a light-transmissive material, the body (106) having at least a portion transparent or translucent so as to permit visual perception of a color change produced by a color-changing module;

a communication receiver (112) to receive control signals;

a power source;

a piece-tracking and identification system integrated into the game board (102); and

a control unit (126) housed within or operatively connected to the game board (102), the control unit (126) comprising a microcontroller or processor (128) associated with a plurality of modules, the modules comprising:

a trigger detection module (130) to detect a switching trigger event,

an eligibility and fairness module (132) to determine switching eligibility of chess pieces (104) based on preset rules and win-probability thresholds,

a communication module (134) to transmit control signals to the communication receivers (112) of the chess pieces (104), and

a power management module (136) to manage power delivery to the chess pieces (104) and to onboard components of the game board (102),

wherein the control unit (126) monitors gameplay, detects a switching trigger event, identifies eligible chess pieces (104) for switching, and transmits control signals to the color-changing modules of the eligible chess pieces (104) to change their color and switch allegiance thereof from a first state indicating allegiance to original player to a second state indicating allegiance to the opponent player during gameplay, in response to one or more predetermined trigger conditions.

2. The chess board game apparatus (100) of claim 1, wherein the color-changing module is selected from an LED, e-ink display, prismatic display, polarized film assembly, electro-mechanical actuator, thermochromic material, photochromic material, electroluminescent material, ferrofluid display, liquid column display, or combinations thereof.

3. The chess board game apparatus (100) of claim 1, wherein the piece-tracking and identification system comprises one or more of: an infrared (IR) blaster, optical sensor, a reed switch, magnet system, an NFC tag reader system, or a pressure sensor system.

4. The chess board game apparatus (100) of claim 1, wherein the switching trigger event is selected from one or more of a manual input, a time-based event, a rule-based condition, a probability-based condition, a move-based condition, an artificial intelligence-based determination, a random luck-based event, or a combination thereof.

5. The chess board game apparatus (100) of claim 1, wherein the manual input for using the switch trigger or the defensive token is provided via a physical button, mouse click, keyboard selection, holographic display, touchscreen interface, voice command, or a connected remote device.

6. The chess board game apparatus (100) of claim 1, wherein the control unit (126) implements a token-based blocking of the switching event mechanism, wherein each player is allocated a predefined number of tokens at the start of a match to prevent an impending piece switch within a predetermined time window after an indication of the switch.

7. The chess board game apparatus (100) of claim 6, wherein the defensive or switch avoid tokens are either replenishable or non-replenishable during a match, optionally transferable between matches in a tournament setting, and optionally available in a digital version of the game based on preset rules agreed between both the players.

8. The chess board game apparatus (100) of claim 1, wherein the eligibility and fairness module (132) permits switching only when the calculated change in win probability for any player does not exceed a predefined threshold agreed upon before gameplay or determined by the rules or fairness engine.

9. A chess board game system (200) comprising:

a game board (102) having a plurality of squares;

a plurality of chess pieces (104), each comprising a body (106) formed of a light-transmissive material, the body (106) having at least a portion transparent or translucent to permit visual perception of a colour change produced by a colour-changing module, a communication receiver (112) to receive control signals, and a power source;

a power source to supply power to at least one of the chess pieces (104) and the game board (102);

a piece-tracking and identification system integrated into the game board (102) and selected from an infrared (IR) blaster (116), optical sensor (118) system, reed switch (120), magnet system (122), NFC tag-reader system, pressure sensor (124) system, or combinations thereof;

a control unit (126) comprising a microcontroller or processor (128) operatively associated with a trigger detection module (130), an eligibility and fairness module (132), a communication module (134), and a power management module (136), the control unit (126) comprising:

a user interface module (202) to set game preferences including switching trigger types, win-probability thresholds, switch event indications and token allocations;

a processing module (204) to execute gameplay logic, track the state of the chess board, and implement switching events;

a communication interface (206) to enable wired or wireless communication with an external device (208); and

a data storage module (210) to store game configurations, player profiles, gameplay history, and switching event logs,

wherein the system (200) is operable in a physical mode with tangible chess pieces (104) or a digital mode with virtual chess pieces rendered on a display, and wherein the switching of chess pieces' allegiance is initiated, validated, and executed based on the preset game preferences and detection of a switching trigger event.

10. The chess board game system (200) of claim 9, wherein the processing module (204) incorporates an artificial intelligence engine to predict move outcomes and determine switching trigger events based on probability analysis.

11. The chess board game system (200) of claim 9, wherein the user interface module (202) enables token-based prevention of piece switching, the tokens being limited in number per game and optionally carried forward or purchased in a tournament mode.

12. The chess board game system (200) of claim 9, wherein the system is operable in a hybrid mode where the physical chess board game apparatus (100) is synchronised with a digital display for remote or online gameplay.

13. A method (300) for controlling a chess board game system (100) or a chess board game system (200), the method (300) comprising:

providing the game board (102) and chess pieces (104);

tracking the location and identity of each chess piece (104) using the piece-tracking and identification system;

monitoring gameplay to detect a switching trigger event;

determining eligible chess pieces (104) for switching;

generating and transmitting control signals to the communication receivers (112) of the eligible chess pieces (104);

activating the colour-changing modules of the eligible chess pieces (104) to alter visible allegiance while retaining their positions; and

maintaining updated gameplay status for subsequent analytics, playback, or remote synchronization;

wherein the method (300) enables dynamic mid-game switching of chess piece allegiance without altering the fundamental rules of chess.

14. The method (300) of claim 13, wherein the switching trigger event is initiated based on a random number, predefined number of moves, elapsed time, or a specific board situation.

15. The method (300) of claim 13, wherein win-probability thresholds are calculated or updated dynamically by an artificial intelligence module.

16. The method (300) of claim 13, wherein the method (300) is computer-implemented or physical board-based or hybrid.

17. A control unit (500) computer compute for a chess board game apparatus (100) or chess board game system (200), the control unit (500) comprising one or more processors (502) and a memory storing instructions which, when executed by the one or more processors (504), cause the control unit (500) to:

track, by a piece-tracking and identification system (506) integrated into a game board (102), a location and identity of each chess piece (104);

monitor gameplay to detect a switching trigger event;

determine chess pieces (104) eligible for switching;

generate and transmit control signals to communication receivers (508) of the eligible chess pieces (104); and

activate colour-changing modules (510) of the eligible chess pieces (104) to alter a visible allegiance thereof;

wherein execution of the instructions enables dynamic mid-game switching of chess piece allegiance without altering fundamental chess rules.

18. A standalone chess piece (600) for a chess board game apparatus (100) or chess board game system (200), the chess piece (600) comprising:

a body (602) formed of a light-transmissive material, the body (602) having at least a portion transparent or translucent so as to permit visual perception of a colour change;

a colour-changing module (604) disposed within the body (602) and to produce a visible change of allegiance of the chess piece (600) during gameplay;

a communication receiver (606) to receive control signals from an external control unit (126); and

a power source (608) to supply electrical power to the colour-changing module (604) and the communication receiver (606);

conductive contacts at a base portion to receive power from a conductive surface of the game board (102);

wherein the chess piece (600) is operable independently of a specific game board and adaptable for pairing with any compatible chess board game apparatus (100) or chess board game system (200) to enable dynamic allegiance or side switching without altering the fundamental rules of chess based on one or more predetermined trigger conditions.

19. The chess piece (600) of claim 18, wherein the colour-changing module (604) produces the visible change of allegiance of the chess piece (600) during gameplay via one or more of an RGB LED array, an e-ink display, a prismatic display, a polarised film assembly, an electromechanical actuator, a thermochromic material, a photochromic material, an electroluminescent panel, a ferrofluid display, a liquid column display, or combinations thereof.

20. The chess piece (600) of claim 18, wherein the chess piece (600) is adapted to operate with physical, virtual or hybrid representations of a chess board game system (200).