Virtual 7

O.Comay
Israel Ring Ty
1978
6th Commendation

Draw

Retroanalysis proves that black is to move! 1...a6 [1...a5 2.a4 stalemate] 2.a3! [2.a4? a5 mutual zugzwang - virtual stalemate] 2...a5 3.a4 stalemate

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