Day 517: Discovered check
Target rating: 1265
Lesson of the day
With a discovered check the moving piece unmasks a check from the piece standing behind it. While the king deals with the check, the piece that moved grabs whatever it likes, free of charge. Look for your long-range piece on a line with the enemy king, with exactly one of your own pieces in between. The rule: among all the ways to step aside, pick the one that captures or attacks the most expensive loot.
Warm-up
1. Attack on the uncastled king: queen to c6 (h1·7)Analysis
White to move — find the best continuation
2. Attack on the uncastled king: pawn to e7 (e6·2)Analysis
White to move — find the best continuation
3. Winning blow: queen to f4 (d4)Analysis
White to move — find the best continuation
4. Winning blow: rook to e6 (e1·10)Analysis
White to move — find the best continuation
5. Winning blow: queen to h5 (g6·2)Analysis
White to move — find the best continuation
6. Winning blow: rook to d8 (d1·11)Analysis
White to move — find the best continuation
7. Winning blow: bishop to c5 (d6·2)Analysis
White to move — find the best continuation
8. Winning blow: rook to d6 (d2)Analysis
White to move — find the best continuation
9. Winning blow: rook to f4 (f1·8)Analysis
White to move — find the best continuation
10. Winning blow: queen to c5 (e7·2)Analysis
White to move — find the best continuation
Core set
11. Mate in 2: rook to d7 (f7·2)Analysis
White to move — find the best continuation
12. Fork: bishop to h2Analysis
Black to move — find the best continuation
13. Winning blow: bishop to g3 (e1·6)Analysis
White to move — find the best continuation
14. Winning blow: king to g3 (h2·3)Analysis
White to move — find the best continuation
15. Discovered attack: king to d6Analysis
Black to move — find the best continuation
16. Winning blow: rook to d7 (a7)Analysis
White to move — find the best continuation
17. Winning blow: queen to a6 (e2·3)Analysis
White to move — find the best continuation
18. Attack on the uncastled king: queen to f3 (d3·2)Analysis
White to move — find the best continuation
19. Attack on the uncastled king: queen to g8 (h7·18)Analysis
White to move — find the best continuation
20. Winning blow: queen to g8 (g3·2)Analysis
White to move — find the best continuation
21. Winning blow: rook to d4 (b4·2)Analysis
White to move — find the best continuation
22. Attack on the uncastled king: pawn to g5 (f4·41)Analysis
White to move — find the best continuation
23. Castling-960 to the rescue on a1 (e1·4)Analysis
White to move — find the best continuation
24. Attack on the uncastled king: queen to f4 (d2·3)Analysis
White to move — find the best continuation
25. Attack on the uncastled king: pawn to f4 (g3·56)Analysis
White to move — find the best continuation
Challenge
Review
Day complete — every puzzle solved. See you tomorrow!
Day 518 →