Day 619: Discovered check
Target rating: 1396
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. Winning blow: queen to c3 (f3·5)Analysis
White to move — find the best continuation
2. Winning blow: bishop to e6 (f7)Analysis
White to move — find the best continuation
3. Winning blow: bishop to d4 (g1·10)Analysis
White to move — find the best continuation
4. Winning blow: queen to e1 (c3·2)Analysis
White to move — find the best continuation
5. Winning blow: pawn to b5 (c4·10)Analysis
White to move — find the best continuation
6. Winning blow: queen to g3 (g6)Analysis
White to move — find the best continuation
7. Winning blow: queen to b5 (b6·2)Analysis
White to move — find the best continuation
8. Attack on the uncastled king: queen to a2 (e2)Analysis
White to move — find the best continuation
9. Winning blow: bishop to e4 (g2·2)Analysis
White to move — find the best continuation
10. Winning blow: queen to d6 (d3·3)Analysis
White to move — find the best continuation
Core set
11. Mate in 3: discovered attack on b1Analysis
Black to move — find the best continuation
12. Winning blow: knight to d5 (e3·14)Analysis
White to move — find the best continuation
13. Discovered attack: knight to e3Analysis
Black to move — find the best continuation
14. Mate in 3: pawn to e6 (e5)Analysis
White to move — find the best continuation
15. Discovered attack: rook to d5Analysis
Black to move — find the best continuation
16. Attack on the uncastled king: rook to b3 (a3·3)Analysis
White to move — find the best continuation
17. Winning blow: bishop to c6 (g2·5)Analysis
White to move — find the best continuation
18. Winning blow: pawn to e4 (e2·7)Analysis
White to move — find the best continuation
19. Winning blow: queen to c1 (a1)Analysis
White to move — find the best continuation
20. Attack on the uncastled king: bishop to g6 (h7·6)Analysis
White to move — find the best continuation
21. Winning blow: queen to g4 (e2·2)Analysis
White to move — find the best continuation
22. Mate in 2: rook to e1 (e8·4)Analysis
Black to move — find the best continuation
23. Pin: bishop to h3Analysis
Black to move — find the best continuation
24. Winning blow: queen to d2 (e1·2)Analysis
White to move — find the best continuation
25. Winning blow: knight to f4 (d3·3)Analysis
White to move — find the best continuation
Challenge
Review
Day complete — every puzzle solved. See you tomorrow!
Day 620 →