Two players are playing the following game.
They are alternatively putting blue and red coins on the board 2018 by 2018. If first player creates n blue coins in a row or column, he wins. Second player wins if he can prevent it. Who will win if:
a)n=4;
b)n=5?
Note: first player puts only blue coins, and second only red. combinatoricscombinatorics proposedJBMO TST