Blackhole Reversi 10x10 is a variation of the traditional game of Reversi
The game board is bigger (10 by 10 as opposed to the usual 8 by 8).
One randomly chosen square is removed from the board before play begins.
You can not place a piece in the hole, and any pieces next to the hole
can not be flanked by pieces placed on the opposite side of the hole.
Aside from that, all the regular rules of Reversi remain unchanged.
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