Nim - Classic Simple Matchstick Game

マッチ棒の5行は - 削除する最後のものが残されてはいけません。

For full rules and mathematical theory see https://en.wikipedia.org/wiki/Nim#Game_play_and_illustration

Basically you have 5 rows of matchsticks:

Row 1 has 1 matchstick,

Row 2 has 2 matchsticks,

Up to row 5 with 5 matchsticks.

You and your opponent take it in turn to remove 1 or more contiguous matchsticks from a single row.

The player to take the last matchstick loses.

That's it!

Have a go and try and beat the computer.