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Reversi lessons · Advanced · Step 9
Endgame Calculation
With ten or fewer empty squares, you can calculate all the way to the end. Keep corners, parity, and passes in mind, and find the moves that win by the most even when White plays its best. If even one move isn't the best, think again.
Puzzle 1
Play the best moves to the end. (Black to move)
Show answer and explanation
The yellow circle marks the answer. With best play to the end, Black wins by 42. Starting with the biggest-flipping move actually lets White win by 4.
Puzzle 2
Last puzzle. Play your best to the end! (Black to move)
Show answer and explanation
The yellow circle marks the answer. With best play to the end, Black wins by 12. Starting with the biggest-flipping move actually lets White win by 36. That's how much one endgame move can matter.