Discovered attack puzzles
One piece moves out of the way and uncovers an attack by the piece behind it, so two threats appear at once.
The piece that moves is free to make its own threat, or even give check, while the hidden piece does the damage behind it.
8 real puzzles from games on Lichess, easiest first, rated 573 to 2694. The course has 965 discovered attacks puzzles in all.
Puzzle 1 · rated 573
White just played Rc3. Black to move.
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35... Re1+ 36. Rxe1 Qxg4
Puzzle 2 · rated 1073
Black just played Rf7. White to move.
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53. d6+ Kxd6 54. Bxf7
Puzzle 3 · rated 1409
White just played Rh3. Black to move.
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43... Rxh3+ 44. Kxh3 fxg4+ 45. Kxg4 Rxh5
Puzzle 4 · rated 1692
Black just played Bc5. White to move.
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29. d6+ Kb8 30. dxe7 Bxd4 31. cxd4
Puzzle 5 · rated 1919
Black just played Nce4. White to move.
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18. O-O-O+ Nd7 19. Rxd7+ Qxd7 20. Rd1
Puzzle 6 · rated 2127
Black just played Kg8. White to move.
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29. Qh7+ Kxh7 30. Bxf7#
Puzzle 7 · rated 2341
Black just played a1=Q. White to move.
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40. Bf6+ Ke6 41. Bd8+ f6 42. Rxf6#
Puzzle 8 · rated 2694
Black just played e3. White to move.
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23. hxg6 fxg6 24. Rxh7 Qxg2 25. Qe7 Qh1+ 26. Rxh1
Free, no sign-up. Puzzles come in order of difficulty and the ladder adjusts to how you solve.
Puzzles from the Lichess puzzle database (CC0). Every line was replayed move by move by the course's rules engine. Part of Chess Path, a free chess course. Free coach for your Chess.com and Lichess games.