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MathNet 2012 Question 68

Math Olympiad Vault · MathNet 2012

Question 68

There are $1234$ pebbles on a table. Ratko and Rudi play the following game: first Ratko takes an even number of pebbles, at least two but no more than $100$, and then Rudi takes an odd number of pebbles, at least one but no more than $99$. The players take turns taking pebbles, always following the same conditions. A player wins if he takes all remaining pebbles, or if the other player can't make his move. Who has the winning strategy, i.e. who can win regardless of the opponent's moves?