Game machine and computer program thereof

A non-transitory computer readable recording medium storing a computer program that is configured to cause a computer of a game machine, comprising an input device that is configured for detecting a position at which a user performs an operation, to function as a control device that (1) commands the user respective positions and timings at which a plurality of operations is to be performed by the user upon the input device, and (2) evaluates the operations by the user on the basis of comparison between the commanded operations and the operations performed by the user and detected by the input device;

• and
• wherein the computer program:
• causes the control device to function as an operation determination device that determines presence or absence of an operation corresponding to a command for any one operation, on the basis of whether or not the operation has been detected within a range of determination that is set to a predetermined width in a predetermined direction with reference to a position at which the one operation is to be performed in response to the command;
• and
• causes the operation determination device to function as a determination range adjustment device that adjusts a range of determination corresponding to a subsequent operation following the one operation so as not to include the position at which the one operation has been detected, when an operation is detected within the range of determination set corresponding to the command for the one operation, and when, upon supposition that the range of determination of the predetermined width is set by referring to a position at which the subsequent operation is to be performed, the position at which the one operation has been detected is included within the range of determination corresponding to the subsequent operation.