A 3x3 array of counters is laid out. Players take turns removing counters. The rule for removing counters is to pick a row or column and take any 1,2 or 3 from it. Whoever removes the last counter wins.
Does the first or second player have a winning strategy?
What is this strategy?
(In reply to Winning Strategy (spoiler)
by Steve Herman)
Say the first player has taken the center piece. Then the second player can take a corner and an adjacent mid-edge piece, leaving, say,
from which it's impossible to leave one of the two configurations given.
The same configuration is available to the second player if the first has chosen to remove a corner piece.
If the first player's chosen first piece to remove is the center of an edge, then the second player can leave
and again the first player can't put it into one of the shown configurations.
Posted by Charlie
on 2009-06-25 17:05:26