I'm playing the Game of Nim with a colleague. He's an old hand and knows
all the patterns by heart. I do not. I can't beat him.
But I can do this:
winNim =: (* 0&<)@(- (~:"1 ~:/)&.#:)
So if you have a Nim board like this:
1 1 1 1 1
1 1 1 1
1 1 1
1 1
1
You can win like this:
winNim 5 4 3 2 1
1 0 1 0 1
That is, remove one stick from the pile of 5, or the pile of 3, or the pile
of 1.
A bandaid for my pride.
-Dan
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