0:00
Game Theory 5.0/10

Nobody Wants Three in a Row

Two players alternately write an X in any empty cell of a 3×3 grid; both write the same symbol X. A player who creates a line of three X's (row, column or diagonal) loses immediately. The first player has exactly one winning opening cell. Which cell is it? Answer 'center', 'corner' or 'edge' (naming the position type).

Related problems

Source: Notakto is a recreational misère variant of tic-tac-toe; this one-board case was solved by exhaustive search for AxiomIQ. Statement written for AxiomIQ.