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Day 262: Discovered attack

Lesson of the day

A discovered attack works like a curtain: one piece steps off the line and unveils the long-range piece behind it. The beauty is that the moving piece can create a second threat of its own — two attacks in one move. Look for your stacked pairs: a bishop or rook behind a knight or pawn, aimed through them at something valuable. Send the front piece to the most aggressive square — a discovery without a second threat wastes half its power.

Warm-up

1. Attack on the uncastled king: king to c2 (d1·5)Shuffle Rating 780Analysis
White to move — find the best continuation
2. Attack on the uncastled king: pawn to b5 (c4·25)Shuffle Rating 780Analysis
White to move — find the best continuation
3. Attack on the uncastled king: bishop to e3 (g1·3)Shuffle Rating 780Analysis
White to move — find the best continuation
4. Attack on the uncastled king: queen to d4 (e3·4)Shuffle Rating 780Analysis
White to move — find the best continuation
5. Attack on the uncastled king: bishop to a8 (e4·7)Shuffle Rating 780Analysis
White to move — find the best continuation
6. Attack on the uncastled king: bishop to g5 (f4)Shuffle Rating 780Analysis
White to move — find the best continuation
7. Winning blow: pawn to c3 (b2·7)Shuffle Rating 780Analysis
White to move — find the best continuation
8. Attack on the uncastled king: pawn to g5 (f4·26)Shuffle Rating 780Analysis
White to move — find the best continuation
9. Attack on the uncastled king: knight to d4 (b3·12)Shuffle Rating 780Analysis
White to move — find the best continuation
10. Attack on the uncastled king: bishop to c5 (f2·4)Shuffle Rating 780Analysis
White to move — find the best continuation

Core set

11. Winning blow: king to c2 (d1·8)Shuffle Rating 970Analysis
White to move — find the best continuation
12. Winning blow: king to f2 (e1·7)Shuffle Rating 970Analysis
White to move — find the best continuation
13. Winning blow: king to c1 (b2·4)Shuffle Rating 970Analysis
White to move — find the best continuation
14. Winning blow: king to g1 (f2·5)Shuffle Rating 970Analysis
White to move — find the best continuation
15. Winning blow: king to c2 (d1·10)Shuffle Rating 970Analysis
White to move — find the best continuation
16. Attack on the uncastled king: queen to c7 (c4·2)Shuffle Rating 920Analysis
White to move — find the best continuation
17. Attack on the uncastled king: bishop to c6 (h1·9)Shuffle Rating 920Analysis
White to move — find the best continuation
18. Winning blow: rook to h7 (h1·5)Shuffle Rating 1010Analysis
White to move — find the best continuation
19. Deflection: knight to c7Shuffle Rating 945Analysis
Black to move — find the best continuation
20. Mate in 2: queen to f2 (d4)Shuffle Rating 1027Analysis
Black to move — find the best continuation
21. Mate in 2: queen to f7 (d5·2)Shuffle Rating 1029Analysis
White to move — find the best continuation
22. Mate in 2: queen to b4Shuffle Rating 1030Analysis
Black to move — find the best continuation
23. Fork: bishop to c5 (f2)Shuffle Rating 1026Analysis
White to move — find the best continuation
24. Pin: knight to f3 (e5·2)Shuffle Rating 1028Analysis
Black to move — find the best continuation
25. Fork: queen to d4 (d8)Shuffle Rating 1028Analysis
Black to move — find the best continuation

Challenge

26. Attack on the uncastled king: knight to b7 (c5·16)Shuffle Rating 1110Analysis
White to move — find the best continuation
27. Winning blow: knight to d4 (f3·6)Shuffle Rating 1200Analysis
White to move — find the best continuation
28. Winning blow: queen to d5 (f3·5)Shuffle Rating 1200Analysis
White to move — find the best continuation

Review

29. Winning blow: queen to f1 (g1·2)Shuffle Rating 1060Analysis
White to move — find the best continuation
30. Mate in 3: rook to h1Shuffle Rating 1090Analysis
White to move — find the best continuation

Day complete — every puzzle solved. See you tomorrow!

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