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Step 1 / 2
The black king on e8 is hemmed in by its own bishop on f8 and pawn on f7. Your bishop on g5 covers e7. A rook to d8 takes the file and the back rank — and there's nowhere left. From Réti–Tartakower, 1910.
Step 1 / 2
The black king on e8 is hemmed in by its own bishop on f8 and pawn on f7. Your bishop on g5 covers e7. A rook to d8 takes the file and the back rank — and there's nowhere left. From Réti–Tartakower, 1910.