solitaire: an exercise in backtracking and string conversions
solitaire: an exercise in backtracking and string conversions

Solves the (English) peg solitaire game. The board is represented
by a 1-dimensional array for easy representation of directions
with a single integer. The board's contents are chosen such that
it can be printed with a direct string() conversion.

R=r
CC=adg, golang-dev
http://codereview.appspot.com/2066042

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