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Day 58: Bishop fork

Lesson of the day

A bishop fork happens when the bishop lands where two diagonals cross and attacks a target on each of them. Both victims must stand on the bishop's color — that is the first thing to verify. Scan for loose enemy pieces that share the color of squares with their own king or queen. A common sin is placing your own pieces on squares of one color and handing your opponent exactly this geometry.

Warm-up

1. Attack on the uncastled king: pawn to g4 (f3·3)Shuffle Rating 780Analysis
White to move — find the best continuation
2. Winning blow: bishop to a6Shuffle Rating 780Analysis
White to move — find the best continuation
3. Attack on the uncastled king: bishop to e5 (d4)Shuffle Rating 780Analysis
White to move — find the best continuation
4. Attack on the uncastled king: pawn to c6 (d5·5)Shuffle Rating 780Analysis
White to move — find the best continuation
5. Attack on the uncastled king: bishop to b1Shuffle Rating 780Analysis
White to move — find the best continuation
6. Attack on the uncastled king: bishop to f5 (b1·2)Shuffle Rating 780Analysis
White to move — find the best continuation
7. Attack on the uncastled king: pawn to d5 (e4·13)Shuffle Rating 780Analysis
White to move — find the best continuation
8. Attack on the uncastled king: bishop to d8 (b6)Shuffle Rating 780Analysis
White to move — find the best continuation
9. Attack on the uncastled king: bishop to a6 (d3)Shuffle Rating 780Analysis
White to move — find the best continuation
10. Attack on the uncastled king: pawn to c3 (d2·2)Shuffle Rating 780Analysis
White to move — find the best continuation

Core set

11. Winning blow: bishop to g6 (b1·4)Shuffle Rating 920Analysis
White to move — find the best continuation
12. Winning blow: bishop to c6 (e4)Shuffle Rating 920Analysis
White to move — find the best continuation
13. Attack on the uncastled king: bishop to f6 (b2·4)Shuffle Rating 920Analysis
White to move — find the best continuation
14. Winning blow: bishop to c7 (b6·2)Shuffle Rating 920Analysis
White to move — find the best continuation
15. Winning blow: bishop to b4 (e7)Shuffle Rating 920Analysis
White to move — find the best continuation
16. Attack on the uncastled king: pawn to d5 (c4·24)Shuffle Rating 780Analysis
White to move — find the best continuation
17. Attack on the uncastled king: queen to g8 (h7·3)Shuffle Rating 780Analysis
White to move — find the best continuation
18. Attack on the uncastled king: pawn to d6 (e5·4)Shuffle Rating 780Analysis
White to move — find the best continuation
19. Attack on the uncastled king: knight to g6 (h4·2)Shuffle Rating 780Analysis
White to move — find the best continuation
20. Attack on the uncastled king: knight to b4 (d3·4)Shuffle Rating 780Analysis
White to move — find the best continuation
21. Attack on the uncastled king: pawn to e4 (f3·3)Shuffle Rating 780Analysis
White to move — find the best continuation
22. Winning blow: pawn to h4Shuffle Rating 780Analysis
White to move — find the best continuation
23. Winning blow: rook to b1Shuffle Rating 780Analysis
White to move — find the best continuation
24. Attack on the uncastled king: pawn to d4 (e3·12)Shuffle Rating 780Analysis
White to move — find the best continuation
25. Winning blow: queen to d2Shuffle Rating 780Analysis
White to move — find the best continuation

Challenge

26. Winning blow: bishop to d5 (h1·2)Shuffle Rating 920Analysis
White to move — find the best continuation
27. Attack on the uncastled king: queen to c4 (c5)Shuffle Rating 920Analysis
White to move — find the best continuation
28. Attack on the uncastled king: pawn to b6 (b5)Shuffle Rating 920Analysis
White to move — find the best continuation

Review

29. Attack on the uncastled king: rook to d6Shuffle Rating 780Analysis
White to move — find the best continuation
30. Attack on the uncastled king: rook to h2 (h1·2)Shuffle Rating 780Analysis
White to move — find the best continuation

Day complete — every puzzle solved. See you tomorrow!

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