describe the winning strategy
Source: ItaMO 2004, p4
March 4, 2012
functioncombinatorics proposedcombinatorics
Problem Statement
Antonio and Bernardo play the following game. They are given two piles of chips, one with and the other with chips. Antonio starts, and thereafter they make in turn one of the following moves:
(i) take a chip from one pile;
(ii) take a chip from each of the piles;
(ii) remove a chip from one of the piles and put it onto the other.
Who cannot make any more moves, loses. Decide, as a function of and if one of the players has a winning strategy, and in the case of the affirmative answer describe that strategy.