JP2001000744A - Score checking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly judge the genuiness/falseness of a submitted score by acquiring a score having a code by calculating a first character string for checking which corresponds with the submitted score by a player, calculating a second character string for checking from the score having the code, and comparing the first and second character strings for checking. SOLUTION: On a game machine 1 side, when a player P plays a game, and has marked a specified score, a specified operation is performed for the score, and a first character string for checking is calculated. Then, by a command from the game machine 1 side, a score having a code under a configuration wherein the first character string for checking is added to the rear side of the score is obtained, and stored in a memory. Then, when the player P enters for the score, the acquired score is submitted to a score checking side by telephone 3, mail 5 or communication. Then, by a computer at the score checking side, the score section and the character string for checking are divided. Then, a second character string for checking which is operated from the score section is compared with the first character string for checking, and the genuiness/falseness is judged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a score checking method for determining the authenticity of a score declared by a player in a high score tournament using, for example, a home game machine.

[0002]

2. Description of the Related Art Generally, in a video game in which a game result is displayed as a score, for example, a shooting game, a score given by each player is reported to a sponsor by a game software maker or the like to obtain a high score. A high score tournament in which a prize is awarded to the player who issued the prize may be held.

[0003] Conventionally, when a high score tournament is held using a home game machine or the like, in order to prevent false declaration from a player, it is necessary to not only simply declare a score, but also a game progress screen or a score screen. Was required to submit a videotape recording the

[0004]

However, in the case of the conventional method of submitting a videotape, the sponsor must reproduce the sent videotape each time to check the score. It was very time-consuming.

[0005] In addition, even if the declaring party records a high score, it is not possible to declare without recording a video tape. Therefore, when attempting to participate in a high score tournament, the progress of the game is always recorded on a video deck. We need to continue. Then, when applying, it was necessary to identify the game screen that obtained the high score from the record, and it was very time-consuming and disturbed the desire to apply. Players who do not have a VCR cannot participate in the high score tournament in the first place.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a score checking method in which both a player and a checker do not have to make a report or check, and an apparatus for implementing the method.

[0007]

The object of the present invention is to provide a game machine which provides a score, calculates a first check character string corresponding to the score from a score given by a player by a predetermined arithmetic expression, Providing the first check character string as a score with a code added to the score,
On the check side for determining the authenticity of the score, after the provided coded score is decomposed into a score portion and a first check character string portion, the score portion corresponding to the score is calculated from the score portion by the predetermined arithmetic expression. (2) calculating a check character string and comparing the decomposed first check character string with the second check character string to determine the authenticity of the provided score; Achieved by the method.

[0008] This makes it possible to easily check a player's false declaration and to add a character string as a code to a normal score, so that the score is visually compared to a code obtained by encrypting everything. The score is easy to understand,
Easy to handle.

In the above-described score check method, the first check character string includes the game information of the player, and the check side performs the first check character string and the first check character string in addition to the score authenticity judgment. The game information may be extracted from the second check character string.

[0010] This makes it possible to easily check the player's false declaration, obtain the game information on the check side, and use it as a reference when creating a score ranking.

[0011] The object of the present invention is to provide, on a game machine side for providing a score, a first check expression corresponding to the score and the password by a first arithmetic expression based on the score given by the player and the password input by the player. A character string is calculated, the first check character string is provided as a coded score added to the score, and on the check side for determining the authenticity of the score, the provided coded score is used as the score portion and the first part. After decomposing into a check character string portion, a second check character string corresponding to the score is calculated from the score portion by a second arithmetic expression,
A third check character string is calculated from the decomposed first check character string and the password by a third arithmetic expression, and the second check character string is compared with the third check character string. This is achieved by a score checking method characterized in that the authenticity of a provided score is determined.

[0012] With this, if the password is different even for the same score, the first check character string is displayed differently depending on the player, and a third person who does not know the password of the player only by looking at the screen can be displayed. You cannot knowingly steal someone else's score.

[0013] The object of the present invention is to calculate a first check character string corresponding to the score from a score given by a player by a predetermined arithmetic expression, and to add a score with the first check character string to the score. This is achieved by a score generation method that generates

In the above-described score generation method, the first check character string may include game information of the player.

[0015] The object is to provide a score given by a player,
From the password input by the player, a first arithmetic expression corresponds to the score and the first password corresponding to the password.
This is achieved by a score generation method that calculates a check character string and generates a score with a code obtained by adding the first check character string to the score.

An object of the present invention is to decompose a provided score with a code into a score portion and a first check character string portion, and then, from the score portion, convert a second check character string corresponding to the score by a predetermined arithmetic expression. The score checking method is characterized in that the calculated and decomposed first check character string is compared with the second check character string to determine the authenticity of the provided score.

In the above-described score check method, the first check character string includes the game information of the player, and in addition to the score authenticity judgment, the first check character string and the second check character string. May be extracted from the game information.

The object of the present invention is to decompose a provided score with a code into a score part and a first check character string part, and then, from the score part, obtain a second check character corresponding to the score by a second arithmetic expression. A third check character string is calculated from the decomposed first check character string and the password by a third arithmetic expression, and the second check character string and the third check character are calculated. This is achieved by a score checking method characterized in that the authenticity of a provided score is determined by comparing a column with a column.

The object of the present invention is to provide a check character string calculating means for calculating a check character string corresponding to the score from a score given by a player using a predetermined arithmetic expression, and to convert the check character string into the score. And a score display means for displaying as a score with a code added to the game machine.

In the above-described game machine, the check character string calculating means calculates a check character string corresponding to the score and the password based on the password input by a player in addition to the score. Is also good.

[0021] The above object is to provide a score decomposing means for decomposing a provided score with a code into a score part and a first check character string part, and to correspond to the score by a predetermined operation formula from the decomposed score part. A second check character string calculating means for calculating a second check character string, and comparing the first check character string with the calculated second check character string, thereby authenticating the provided score. And a score authenticating means for determining the score.

In the above-described score checking device,
The first check character string may include game information of the player, and may include information calculation means for extracting the game information from the first check character string and the second check character string.

The above object is achieved by a score decomposing means for decomposing a provided coded score into a score part and a first check character string part, and a second check character corresponding to the score from the decomposed score part. Second to calculate the column
Check character string calculating means, third check character string calculating means for calculating a third check character string from the decomposed first check character string part and the provided password,
The score checking device has a score authenticating means for comparing the second check character string and the third check character string to judge authenticity of a provided score. You.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A score checking method according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing an outline of a configuration example for realizing the score check method of the present embodiment, and FIG. 2 is a flowchart showing a basic flow of the score check method of the present embodiment.

As shown in FIG. 1, the basic configuration of a system for executing the score checking method of the present embodiment includes a game machine 1 and a TV monitor 2 on the player side and a player P displayed on the TV monitor 2. It comprises a telephone 3 for notifying the checker of the score and a computer 4 on the checker. As a method of transmitting the score, in addition to the method of transmitting the score verbally using the telephone 3 shown in the drawing, the score may be transmitted by ordinary postal matter 5 such as a postcard or a sealed letter, or transmitted by communication using a telephone line. May be.

As shown in FIG. 2, the basic flow of this check method is as follows.
Plays a game and gives a predetermined score (eg, 12345) (step S1). Next, a predetermined calculation is performed on the score by an arithmetic circuit in the game machine 1, and a first check character string (eg, AB) is calculated (step S).
2). This character string corresponds to a score, and a different score results in a different character string.

When the first check character string corresponding to the score is determined in this manner, the first check character string is added after the score by a command from the game machine 1 (example: 12345AB) is displayed on the TV monitor 2 (step S3).

The basic flow of the game machine 1 has been described so far. Steps S1 to S3 are performed for each game played by the player.
Are repeated.

In this manner, the first game obtained for each game
The score with check string (score with code)
The information is stored in a memory (not shown) in the game machine 1 and displayed on the monitor 2 in the order of score.

When the player P applies for his own score, he selects the largest score among the obtained scores, and as shown in FIG.
Or submit it to the score checker by communication.

On the other hand, the check side receives the transmitted coded score (step S4), and then, for example, converts the coded score by the checking side operator into a score portion (eg, 12345) and a check character string. (Example: AB) (Step S5). Note that the operator inputs a score with a code into the computer 4 in step S4 for this cutout process.
The calculation may be performed by an arithmetic circuit inside the computer 1.

Next, the divided score portions (eg, 123
45), a check character string (second check character string) is calculated by performing a predetermined operation by the computer 4 or performing processing such as performing numerical value / code conversion using a conversion table. (Step S6). The arithmetic expressions and numerical value / code conversion tables used here are the same as those used on the game machine 1 side. Therefore, assuming that no false declaration was made, score portion 12345
Gives the character string AB.

After the second check character string is calculated from the score portion in this way, the computer 4 or the operator subsequently converts the second check character string and the preceding first check character string. Are compared (step S
7).

If it is determined in step S7 that the two are equal (AB = AB), the declared score is determined to be correct, and a display such as "correct" is displayed on the display of the computer 4, for example. Conversely, if different (A
B ≠ AB), since there is a possibility that the report is false, a display such as “wrong” is displayed on the display of the computer 4.

As described above, according to the present embodiment, the check side obtains the second check character string from the declared score portion using the same arithmetic expression and numerical / code conversion table as the game machine side. This is the first file declared by the player
Since the comparison is made with the check character string, the false declaration of the player can be easily checked.

Also, since the form of declaration is the one in which a character string as a code is added to the score, the score is easy to understand visually and the player can easily copy it, compared with the case where the whole is encrypted. There is.

It should be noted that the check character string to be added does not need to include the information of the score itself because there is no need to calculate the score back from it, and can be represented by a short character string as illustrated.

However, it is preferable to make the display form so as not to be mistaken for the score. Specifically, it is desirable not to use numbers, to change the score and the color or character type, or the like.

The position at which the check character string is added to the score is not limited to the position after the score.
As in 23456, a score may be added before the score.

As for the display of a score with a code, a character string may be displayed alone only when a specific button is pressed, so that a sneak shot by a third party is not easily performed. .

A score checking method according to the second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flowchart showing a basic flow of the score check method according to the present embodiment.

The check character string in the first embodiment of the present invention simply converts and displays the score given by the player. In this embodiment, the first character string on the game machine 1 side is used.
The feature is that information during the game is added when the check character string is calculated. On the check side, the added game information can be extracted from the check character string.

As shown in FIG. 3, the basic flow of this check method is as follows.
Plays a game and gives a predetermined score (eg, 12345) (step S11).

Next, a predetermined calculation is performed on a predetermined score and the game additional information by a calculation circuit in the game machine 1, and a first check character string (for example, XYZ) is calculated (step). S12). As the game additional information, for example, in the case of a racing game, game difficulty, course information,
Time. Therefore, the calculated character string XYZ
Is representative of the score given by the player and the game additional information. Therefore, if the score is different, the check character string is different, and even if the score is the same, the check character string is different if the game additional information is different.

When the first check character string corresponding to the score and the game additional information is determined in this way, next,
After the score, the first
A form to which a check character string is added (Example: 12345XY
The score with the code Z) is displayed on the TV monitor 2 (step S13).

The basic flow of the game machine 1 has been described above. Steps S11 to S11 are performed for each game played by the player.
Thirteen above-mentioned processes are repeated.

In this way, the first
The score with check string (score with code)
The information is stored in a memory (not shown) in the game machine 1 and displayed on the monitor 2 in the order of score. When the player P applies for his / her own score, he / she selects the largest score among the obtained scores, and submits it to the score check side by telephone 3, mail 5 such as a postcard, or communication.

On the other hand, the check side receives the transmitted score with a code (step S14), and then, for example, checks the score on the check side or the computer 1
The score with the code is converted to the score portion (eg, 1234).
5) and a first check character string (example: XYZ) (step S15). Next, the divided score part 1
From 2345, a second check character string (for example, AB) is calculated by a predetermined arithmetic expression (step S16).

Next, a second check character string (example: AB)
Thus, the validity of the first check character string (eg, XYZ) is checked (step S17). That is, the second
It is determined whether the score information represented by the check character string (eg, AB) matches the score information included in the first check character string (eg, XYZ) (step S17).

In step S17, if it is determined that the score information included in both is equal (XYZ = AB), the declared score is determined to be correct, and, for example, "correct" is displayed on the display of the computer 4. Along with
The game additional information is calculated from the first check character string (eg, XYZ) and / or the second check character string (eg, AB) (step S18). The game additional information can be used, for example, as judgment data when announcing the player ranking.

Conversely, if it is determined in step S17 that they are different, there is a possibility that the report is false, and a display such as "erroneous" is displayed on the display of the computer 4.

The following can be considered as the player information that can be used as the game additional information.

In the case of a shooting game, the time required for clearing, the course until clearing, the number of enemies defeated,
The type of self-machine used, the number of power-ups taken, the number of lost self-machines, the number of self-machines left when clearing, the power-up status of the self-machine when clearing, the number of special weapons used, and the number used when clearing The number of special weapons that were fired, the number of continuations or the flag of whether or not continuation, the number of civilians who misfired in the case of a gun game, the flag of whether or not a specific enemy (boss) was defeated, and the removal of certain items There may be a flag indicating whether or not the game has been performed, the number of simultaneous players (in the case of a multiplayer simultaneous participation game), and the like.

Also, in the case of a racing game, the time required for clearing, the order at the time of clearing, the course until clearing,
The type of host vehicle used, the number of enemy vehicles passed, the number of pits entered, the number of crashes, the flag as to whether or not a particular item (shortcut, turbo, etc.) was used, the number of simultaneous players (for multiplayer games Case).

Also, in the case of a fighting game, the time required for clearing the game against the computer, the number of faces cleared in the game against the computer, the number of people who have won, the number of continuations,
The type of character used, a flag indicating whether or not a particular technique has been used, information on whether or not a particular method of winning (time out, ring out, etc.), Perfect (a condition in which the player has never been damaged ), The number of times
And so on.

As described above, according to the present embodiment, it is possible to easily check a player's false declaration,
Ranking using information that does not appear in the score using the game additional information is possible.

A score checking method according to the third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a flowchart showing a basic flow of the score checking method according to the present embodiment.

This embodiment is characterized in that the password information inputted by the player is reflected when the first check character string is calculated on the game machine 1 side. For example, when a high score tournament is held using a large game machine with a spectator around in an arcade game or the like, it is for dealing with a stolen copy report of a high score with a code by a third party such as a spectator. It is. At the end of the game, a password is input by a player without being seen by others, and the password is not displayed on the screen so that it cannot be known to anyone other than the player. This can prevent a false declaration from a third party.

As shown in FIG. 4, the basic flow of this check method is similar to the score check method of the second embodiment. First, on the game machine 1, the player P plays a game and gives a predetermined score (eg, 12345) (step S21).

Next, a predetermined calculation is performed by a calculation circuit in the game machine 1 in consideration of the password input by the player to the predetermined score, and a first check character string (eg:
XYZ) is calculated (step S22). The password is input by the player, and is, for example, a combination of favorite alphabets, initials of the player or lover, and the like. Therefore, the calculated character string XYZ is representative of the score given by the player and the password input by the player. Therefore, the check character strings are different for different scores, and the check character strings are different for the same score but different passwords.

When the first check character string corresponding to the score and the game additional information is determined in this manner, next,
After the score, the first
A form to which a check character string is added (Example: 12345XY
The score with the code Z) is displayed on the TV monitor 2 (step S23). The player sends the coded score and the password to the checker without making it known to others.

The basic flow of the game machine 1 has been described so far. Steps S21 to S21 are performed for each game played by the player.
The above-described processing of 23 is repeated.

On the other hand, the check side receives the transmitted score with the code (step S24), and then, for example, checks the score on the check side or the computer 1
The score with the code is converted to the score portion (eg, 1234).
5) and a first check character string (eg, XYZ) (step S25).

Next, a second check character string (for example, A
B) is calculated (step S26). At the same time, the third character string XYZ for the check, which has been cut out, and the password declared by the player,
A check character string (eg, A'B ') is calculated (step S27).

Next, the second check character string AB is compared with the third check character string A'B '(step S28). If it is determined in step S28 that both are equal (AB = A'B '), it means that the declared score is correct, and for example, "correct" is displayed on the display of the computer 4. On the other hand, if it is determined that they are different from each other (AB @ A'B '), it means that the report is a false report, and for example, "wrong" or the like is displayed on the display of the computer 4.

As described above, according to the present embodiment, if the password is different even if the score is the same, the first score is determined by the player.
Since the check character strings are different, a third person who does not know the password of the player cannot steal another person's score just by looking at the screen.

In the case of a high score tournament for home game machines other than arcade game machines, the serial number of the game machine 1 itself and the serial number of the game software are entered as the password as the password for the player. By doing so, the reliability of the password can be improved.

In the score checking method of the present embodiment, the password may be input at the start of the game in addition to the end of the above-mentioned game, or only when a high score is obtained. May be input. For home game consoles,
The method of entering a password at the start of the game is suitable,
In the case of an arcade game machine, a method of inputting only when a high score is obtained is suitable.

Referring to FIG. 5, the operation of the player when the third embodiment is applied to a home-use game machine and the score display processing associated therewith will be described.

First, when the game starts, a message requesting the player to enter a password is displayed on the display, and the player inputs a password to the home game machine (step S31). The input password is, for example, a backup R of the game machine.
By storing the password in the AM or the like, the trouble of inputting the password at the start of the game thereafter can be saved.

Next, with the game play of the player,
Each process such as calculation and image / sound output is performed, and the game is executed (step S32).

When the game is over, a process of externally displaying the score thus obtained is performed (step S33). The display form is a form in which a first check character string (for example, AB) is added to a score (for example, 12345) as shown on the left side of step S33 (for example, 12345).
AB), and as shown on the right side of step S33, a score (e.g., 12345) and a first check character string (e.g., AB) are separately displayed, and can be switched by a button operation by the player. You may do it. The game ends this score display last.

Next, referring to FIG. 6, when the password is not used in the arcade game machine,
The operation of the player when the embodiment is applied and the score display processing accompanying the operation will be described.

First, when the game is started, various processes such as calculation of a program and output of images and sounds are performed in accordance with the game play of the player, and the game is executed (step S41). Next, at the end of the game, a first check character string (for example, AB) is obtained from a score (for example, 12345) obtained by the player using a predetermined arithmetic expression. Is displayed to the player in the form of a score with a code (e.g., 12345-AB) to which is added (step S42). Thereafter, the display is switched to the display of only the score in order to prevent the player from being stolen by another player. It should be noted that the normal aged game machine displays a list of high scores when not playing, but also in this case, does not display a check character string.

In this way, even if the password is not used, the check character string cannot be known unless another person watches the player immediately after the play, and the score may be stolen by another person. Is extremely low.

However, if another person knows that a score with a code is displayed immediately after play and watches it intentionally, it is not impossible to know the check character string.
There is no possibility of plagiarism. Further, there is a possibility that a player who is not used to the game may overlook the character string for checking his high score. Therefore, as in the third embodiment, it is desirable to use a password even in an arcade game machine.

With reference to FIG. 7, a description will be given of the operation of the player and the score display processing when the password is used in the arcade game machine, that is, when the third embodiment is applied.

First, when the game is started, various processes such as calculation of a program and output of images and sounds are performed in accordance with the game play of the player, and the game is executed (step S51). Next, at the end of the game, the score (eg, 12345) obtained by the player is displayed (step S52). Only when this score has reached a predetermined high score, the player is caused to input a password (step S53). In general, an arcade game machine is not provided with a character input key, so that a password is input by a combination of button and lever operations. Alternatively, a magnetic card or an IC card storing a password may be prepared in advance, and the password may be input by inserting the card into a game machine.

When the password is input in this way, a first check character string (for example, AB) is obtained from the input password and the score using a predetermined arithmetic expression, and the first check character string is obtained. The character string AB is displayed to the player (step S54), and thereafter, the display is switched to the display of only the score, and the routine ends.

The present invention is not limited to the above embodiment, and various modifications are possible. For example, all the processes on the check side may be performed by an operator, or may be entirely performed by a computer.

In the above embodiment, the present invention is applied to the score check of the game. However, the present invention is not limited to the game but may be applied to the check of confidential data.

[0082]

As described above, according to the present invention, on both the game machine side and the check side, a code-added score obtained by adding a character string as a code to a normal score is handled. Compared with the encrypted version, the score is easy to understand visually, and the player can easily copy the score. On the check side, a second check character string is obtained from the score portion of the score with the first check character string declared by the player, and this is compared with the first check character string declared by the player. As a result, it is possible to easily check the player's false declaration.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating a configuration example for realizing a score check method according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a basic flow of a score check method according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing a basic flow of a score check method according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing a basic flow of a score check method according to a third embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of a consumer game machine for executing a score check method according to a third embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of the arcade game machine for executing the score check method according to the first embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation of an arcade game machine for executing a score check method according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Game machine 2 ... Monitor 3 ... Telephone 4 ... Computer 5 ... Postcard 6 ... Computer

Claims (15)

[Claims] 1. A game machine that provides a score calculates a first check character string corresponding to the score from a score given by a player using a predetermined arithmetic expression,
The first check character string is provided as a score with a code added to the score. On the check side for determining the authenticity of the score, the provided score with the code is converted into a score part and a first check character string part. After the disassembly, a second check character string corresponding to the score is calculated from the score portion by the predetermined arithmetic expression, and the decomposed first check character string and the second check character string are compared. A score checking method for determining whether the provided score is authentic or not. 2. The score check method according to claim 1, wherein the first check character string includes game information of the player, and the check side performs the first check in addition to the authenticity determination of the score. A score check method, wherein game information is extracted from a character string for use and the second check character string. 3. A game machine that provides a score, a first check character string corresponding to the score and the password according to a first arithmetic expression, based on the score given by the player and the password input by the player. Is provided, and the first check character string is provided as a coded score added to the score. On the check side for determining the authenticity of the score, the provided coded score is used as the score portion and the first check. After being decomposed into a character string part, a second check character string corresponding to the score is calculated from the score part by a second operation expression, and a third check character string and the password are decomposed into a third character string from the decomposed first check character string and the password. By calculating a third check character string by an arithmetic expression and comparing the second check character string with the third check character string, Score checking method characterized by determining the authenticity of the provided scores. 4. A first check character string corresponding to the score is calculated from a score given by a player by a predetermined arithmetic expression, and a score with a code obtained by adding the first check character string to the score is generated. Score generation method. 5. The score generating method according to claim 4, wherein the first check character string includes game information of the player. 6. A first check character string corresponding to the score and the password is calculated from a score given by the player and a password input by the player by a first arithmetic expression, and the first check character is calculated. A score generation method for generating a coded score in which a column is added to the score. 7. After the provided score with a code is decomposed into a score part and a first check character string part, a second operation corresponding to the score is performed from the score part by a predetermined arithmetic expression.
A score check method comprising: calculating a check character string; and comparing the decomposed first check character string with the second check character string to determine whether the provided score is authentic. . 8. The score check method according to claim 7, wherein the first check character string includes game information of the player, and further includes the first check character string and the A score check method comprising extracting game information from a second check character string. 9. After the provided score with a code is decomposed into a score portion and a first check character string portion, a second check character string corresponding to the score is calculated from the score portion by a second arithmetic expression. A third check character string is calculated from the decomposed first check character string and the password by a third arithmetic expression, and the second check character string and the third check character string are calculated. A score check method characterized by determining the authenticity of the provided score by comparing the score. 10. A check character string calculating means for calculating a check character string corresponding to the score from a score given by a player using a predetermined arithmetic expression, and adding the check character string to the score. And a score displaying means for displaying the score as a score with a code. 11. The game machine according to claim 10, wherein the check character string calculating means converts a check character string corresponding to the score and the password by using a password input by a player in addition to the score. A game machine characterized by calculating. 12. A score decomposing means for decomposing the provided score with a code into a score portion and a first check character string portion, and a second operation corresponding to the score from the decomposed score portion by a predetermined arithmetic expression. The second to calculate the check string
Check character string calculating means, and score authenticity determining means for comparing the first check character string with the calculated second check character string to determine the authenticity of the provided score. A score checking device characterized by the following. 13. The score checking device according to claim 12, wherein the first check character string includes game information of the player, and the first check character string and the second check character string An information calculation means for extracting game information, the score checking device comprising: 14. A score decomposing means for decomposing a provided score with a code into a score part and a first check character string part, and a second check character string corresponding to the score from the decomposed score part. A second check character string calculating means for calculating; a third check character string calculating means for calculating a third check character string from the decomposed first check character string portion and the provided password; A score checking device comprising: a score authenticating means for judging authenticity of a provided score by comparing a check character string with the third check character string. 15. An information storage medium storing a program for executing the method according to claim 1. Description: