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Day 476: Development punish

Lesson of the day

Punishing lazy development: half of your opponent's army is asleep on its starting squares, which means you outnumber him where the fight is. Count not the pieces on the board but the pieces in play — if five or more of his pieces have never moved, look for a forcing attack. The sign is a development lead plus open lines toward his king. Strike immediately: give him two quiet moves and the advantage evaporates.

Warm-up

1. Attack on the uncastled king: queen to h4 (h5)Shuffle Rating 780Analysis
White to move — find the best continuation
2. Attack on the uncastled king: knight to b4 (c2·5)Shuffle Rating 780Analysis
White to move — find the best continuation
3. Attack on the uncastled king: rook to h2 (h1·7)Shuffle Rating 780Analysis
White to move — find the best continuation
4. Attack on the uncastled king: knight to e3 (d1)Shuffle Rating 780Analysis
White to move — find the best continuation
5. Attack on the uncastled king: bishop to b5 (d3·3)Shuffle Rating 780Analysis
White to move — find the best continuation
6. Attack on the uncastled king: rook to h4 (h1·18)Shuffle Rating 780Analysis
White to move — find the best continuation
7. Attack on the uncastled king: bishop to e4 (d3·4)Shuffle Rating 780Analysis
White to move — find the best continuation
8. Attack on the uncastled king: bishop to a8 (h1·32)Shuffle Rating 780Analysis
White to move — find the best continuation
9. Attack on the uncastled king: knight to e1 (f3)Shuffle Rating 780Analysis
White to move — find the best continuation
10. Attack on the uncastled king: queen to g7 (g3)Shuffle Rating 780Analysis
White to move — find the best continuation

Core set

11. Winning blow: pawn to h4 (h2)Shuffle Rating 1250Analysis
White to move — find the best continuation
12. Winning blow: king to f1 (e1·19)Shuffle Rating 1250Analysis
White to move — find the best continuation
13. Winning blow: queen to e3 (f2·3)Shuffle Rating 1250Analysis
White to move — find the best continuation
14. Winning blow: pawn to e6 (e5·6)Shuffle Rating 1250Analysis
White to move — find the best continuation
15. Winning blow: rook to c2 (c1·5)Shuffle Rating 1250Analysis
White to move — find the best continuation
16. Winning blow: king to e2 (d1·16)Shuffle Rating 1060Analysis
White to move — find the best continuation
17. Attack on the uncastled king: rook to c4 (c1·10)Shuffle Rating 1060Analysis
White to move — find the best continuation
18. Winning blow: bishop to b6 (a7·2)Shuffle Rating 1060Analysis
White to move — find the best continuation
19. Winning blow: rook to e1 (g1·2)Shuffle Rating 1060Analysis
White to move — find the best continuation
20. Winning blow: queen to b5 (b3·2)Shuffle Rating 1010Analysis
White to move — find the best continuation
21. Winning blow: rook to b2 (a2·2)Shuffle Rating 1010Analysis
White to move — find the best continuation
22. Winning blow: rook to d5 (d1·5)Shuffle Rating 1010Analysis
White to move — find the best continuation
23. Winning blow: queen to b8 (b2)Shuffle Rating 1010Analysis
White to move — find the best continuation
24. Attack on the uncastled king: queen to g3 (f2·2)Shuffle Rating 1010Analysis
White to move — find the best continuation
25. Winning blow: queen to c6 (b7·2)Shuffle Rating 1010Analysis
White to move — find the best continuation

Challenge

26. Attack on the uncastled king: pawn to a3 (b2·33)Shuffle Rating 1200Analysis
White to move — find the best continuation
27. Mate in 2: rook to a7 (b7)Shuffle Rating 1320Analysis
White to move — find the best continuation
28. Winning blow: rook to e1 (b1·2)Shuffle Rating 1390Analysis
White to move — find the best continuation

Review

29. Attack on the uncastled king: king to e1 (f1·2)Shuffle Rating 970Analysis
White to move — find the best continuation
30. Mate in 2: knight to e7 (f5·2)Shuffle Rating 1220Analysis
White to move — find the best continuation

Day complete — every puzzle solved. See you tomorrow!

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