Day 274: Discovered check
Target rating: 956
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: knight to c5 (d3·3)Analysis
White to move — find the best continuation
2. Attack on the uncastled king: pawn to c4 (b3·29)Analysis
White to move — find the best continuation
3. Winning blow: rook to b5Analysis
White to move — find the best continuation
4. Attack on the uncastled king: rook to b4 (b3·2)Analysis
White to move — find the best continuation
5. Winning blow: knight to b5 (c3·2)Analysis
White to move — find the best continuation
6. Attack on the uncastled king: pawn to f5 (e4·46)Analysis
White to move — find the best continuation
7. Attack on the uncastled king: bishop to f4 (e3·3)Analysis
White to move — find the best continuation
8. Attack on the uncastled king: queen to e4 (b1·6)Analysis
White to move — find the best continuation
9. Attack on the uncastled king: queen to g7 (d4)Analysis
White to move — find the best continuation
10. Attack on the uncastled king: pawn to e5 (d4·84)Analysis
White to move — find the best continuation
Core set
11. Winning blow: knight to d4 (e2)Analysis
White to move — find the best continuation
12. Attack on the uncastled king: pawn to a7 (b6·2)Analysis
White to move — find the best continuation
13. Winning blow: queen to c4 (b3·2)Analysis
White to move — find the best continuation
14. Discovered attack: rook to f5Analysis
Black to move — find the best continuation
15. Discovered attack: rook to d6Analysis
White to move — find the best continuation
16. Attack on the uncastled king: pawn to d5 (e4·113)Analysis
White to move — find the best continuation
17. Winning blow: bishop to a5 (e1)Analysis
White to move — find the best continuation
18. Winning blow: queen to a3 (e3)Analysis
White to move — find the best continuation
19. Winning blow: queen to c1 (g5)Analysis
White to move — find the best continuation
20. Attack on the uncastled king: king to h2 (g1·7)Analysis
White to move — find the best continuation
21. Winning blow: rook to h8 (h1·3)Analysis
White to move — find the best continuation
22. Winning blow: pawn to f3 (f2·3)Analysis
White to move — find the best continuation
23. Discovered attack: bishop to h2 (d6·3)Analysis
Black to move — find the best continuation
24. Winning blow: queen to c2 (b2)Analysis
White to move — find the best continuation
25. Winning blow: pawn to f3 (f2·4)Analysis
White to move — find the best continuation
Challenge
Review
Day complete — every puzzle solved. See you tomorrow!
Day 275 →