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Historic positions of forced mate / Posiciones históricas del mate forzado / Historische Stellungen des gezwungenen Matt (Paperback) - Walmart.com
What is the earliest position where black has forced mate in under 10 moves on white to move (and vice versa)? - Quora
What is the earliest position where black has forced mate in under 10 moves on white to move (and vice versa)? - Quora
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