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Have You Got It?

Can you explain the strategy for winning this game with any target?

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Nim

Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The loser is the player who takes the last counter.

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FEMTO

A new card game for two players.

Dominoes

Stage: 2, 3 and 4 Challenge Level: Challenge Level:2 Challenge Level:2

Here are two possible solutions to the "windows" problem: