The Subtraction Game

The Odd Subtraction Game

Starting Player: Blue Red

Blue Total:
Red Total:

Winner:

Click on to start a new game.

Enter the starting number of circles in the stack.
Start with an odd number:
Number of Circles:

Enter the maximum number of circles that can be taken on each turn.
Maximum Number:

Select the winning condition.
Person who takes an odd number of circles.
Person who takes an even number of circles.

On your turn, click on a circle to remove it and the circles to the right up to the maximum number. Click on to undo.

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