MathCastle
OlympiadSuperchallengeOlympiad Number Theory

Olympiad Number Theory · Superchallenge problem

A coin sits on square 11 of a 1×121\times12 strip. Players alternate moving it 11 or 22 squares to the right; whoever moves it onto square 1212 wins. With best play, does the first player win? Answer 11 for yes, 00 for no.