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A knight on f6

Adolf Anderssen vs Samuel Rosenthal · Vienna 1873 · White to play and win

White to play. Mate in 4.

Find the move Adolf Anderssen found. The other side answers by itself.

Adolf Anderssen vs Samuel Rosenthal

Vienna, 1873

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The game

Adolf Anderssen against Samuel Rosenthal, Vienna, 1873. The board above holds the position as it stood: White to move, and mate in 4. Find the move that was played and the other side answers by itself, exactly as it answered then.

The story behind it, which gives the finish away

A knight check opens the e-file, a pawn check follows, and the queen comes to e7 to mate a king that never left home.

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