Both agree it is a discoveredCheck25 of 33,704
40... Rc6+ 41. Ka2 Rxe6
Lichess labelled discoveredAttack, discoveredCheck
17. fxg5+ Qf6 18. Rxf6+
Lichess labelled discoveredAttack, discoveredCheck, pin
27... Nxf3+ 28. Kh1 Qxf4 29. Qxf4+ Kxf4
Lichess labelled discoveredAttack, discoveredCheck, doubleCheck
14. Ng3+ Ne7 15. Nf5 O-O 16. Nxd6
Lichess labelled discoveredAttack, discoveredCheck
24... Bg5+ 25. Kg2 Bxe3
Lichess labelled discoveredAttack, discoveredCheck
54... e4+ 55. Qg3 Qxg3+
Lichess labelled discoveredAttack, discoveredCheck
14... Nf4+ 15. Kd2 Nxd5
Lichess labelled discoveredAttack, discoveredCheck
22. e6+ Kd8 23. Qxc6 Qd4+ 24. Kh1
Lichess labelled deflection, discoveredAttack, discoveredCheck
17. fxe3+ Kg8 18. Bh7+ Kh8 19. Rxd8
Lichess labelled discoveredAttack, discoveredCheck
36. Kc2+ Ke4 37. Re1+ Kxf4 38. Rxe8
Lichess labelled discoveredAttack, discoveredCheck, skewer
27. Bxg4+ Ke8 28. Bh5 Qxh5 29. Nf6+ Kd8 30. Nxh5
Lichess labelled attraction, discoveredAttack, discoveredCheck, fork, pin
14. Ng6+ Kg8 15. Rh8+ Kf7 16. Qh5
Lichess labelled discoveredAttack, discoveredCheck
47. Nc5+ Ra6 48. Qxa6+ Qxa6 49. Nxa6
Lichess labelled discoveredAttack, discoveredCheck
20. Bg6+ Kg8 21. Qh7+ Kf8 22. Qh8+ Ke7 23. Qxg7+ Kd6 ... +1 moves
Lichess labelled deflection, discoveredAttack, discoveredCheck
26... hxg4+ 27. Kg1 Qh2+ 28. Kf2 O-O+
Lichess labelled discoveredAttack, discoveredCheck
38... Rc2+ 39. Kg1 Rxc1+
Lichess labelled discoveredAttack, discoveredCheck
26. cxd6+ Kd7 27. Rc7+ Ke8 28. Re7+ Kf8 29. Rxe4 Nxe4+ ... +1 moves
Lichess labelled discoveredAttack, discoveredCheck, fork
37. Ne6+ Kh7 38. Nxf8+ Kg8 39. Kh2
Lichess labelled discoveredAttack, discoveredCheck
28. c6+ Nc5 29. c7 Kf7 30. c8=Q
Lichess labelled discoveredAttack, discoveredCheck, pin, promotion
43. Bf7+ Kxf7 44. Qxf4+
Lichess labelled attraction, discoveredCheck, doubleCheck, interference, intermezzo
18. exf7+ Kxf7 19. Qe6+ Kg7 20. Qxc6
Lichess labelled attraction, discoveredCheck, doubleCheck, fork
12. cxb7+ Nxa4 13. bxa8=Q
Lichess labelled discoveredAttack, discoveredCheck, promotion
Lichess says discoveredCheck, Koga does not25 of 75,104
54... Nc3+ 55. Kd3 Nxa4+
Lichess labelled discoveredAttack, discoveredCheck, fork
13... Nh3+ 14. Kh1 Qg1+ 15. Rxg1 Nf2#
Lichess labelled discoveredCheck, doubleCheck
36... Rd3+ 37. g3 Rxg3+ 38. Kh2 Rc3+
Lichess labelled discoveredAttack, discoveredCheck
17. Bxh7+ Kxh7 18. hxg5+ Kg6 19. Qh4
Lichess labelled clearance, discoveredAttack, discoveredCheck, intermezzo
23. Rxf7 Qe8 24. Re7+ Kh7 25. Rxe8
Lichess labelled discoveredAttack, discoveredCheck
34. Qxe7 Bxe7 35. f6+ Rxe4 36. fxe7
Lichess labelled discoveredAttack, discoveredCheck
20. Rxe8+ Bxe8 21. Nb6+
Lichess labelled discoveredAttack, discoveredCheck
45... Be4+ 46. Rf3 Qd2+ 47. Kg3 Qe1+ 48. Kf4 g5+ 49. Ke5 ... +1 moves
Lichess labelled discoveredAttack, discoveredCheck, pin
19... Bh2+ 20. Kh1 Ng3+ 21. Kxh2 Nxe2+
Lichess labelled discoveredAttack, discoveredCheck, fork
31. Ka4 Ra7 32. Bf6 Rxb7 33. Rg1+
Lichess labelled clearance, discoveredAttack, discoveredCheck
15. O-O-O+ Bd7 16. Bxc5
Lichess labelled discoveredAttack, discoveredCheck, pin
14. h5+ Kh6 15. Nxe6+ Kh7 16. Nxf8+
Lichess labelled discoveredAttack, discoveredCheck
47. Rb8+ Kh7 48. fxe6+ Rxc2 49. e7
Lichess labelled discoveredAttack, discoveredCheck
42... Nf2+ 43. Ke2 Ng4+ 44. Kf3 Nxe5+
Lichess labelled discoveredAttack, discoveredCheck
20... Bxh2+ 21. Kh1 Rh4 22. g3 Bxg3+
Lichess labelled discoveredAttack, discoveredCheck
27. Ne8+ Kf8 28. Nxc7+
Lichess labelled discoveredAttack, discoveredCheck, fork
27... Rxf1+ 28. Rxf1 Bxg2+ 29. Kg1 Bf3#
Lichess labelled discoveredAttack, discoveredCheck, fork
30. Bf6 Qxf6 31. e5+ Bf5 32. exf6
Lichess labelled attraction, discoveredAttack, discoveredCheck
35. Qxd4+ f6 36. Nxf6 Qg5+ 37. Ng4+
Lichess labelled discoveredAttack, discoveredCheck
Koga says discoveredCheck, Lichess does not25 of 835
31. e8=Q+ Kxe8 32. Rxh8+ Kd7 33. Rxa8
Lichess labelled attraction, doubleCheck, interference, intermezzo, promotion, skewer
25... exd4+ 26. Qf4 Rh3+ 27. Kxh3 Qxf4
Lichess labelled deflection, discoveredAttack, pin
39. fxe7+ Kxe7 40. Qf8+ Kd7 41. Rf7+ Qxf7 42. Qxf7+
Lichess labelled attraction, discoveredAttack
24. exd6+ Rg7 25. Qd4 Qg6 26. Re1 Nc7 27. dxc7
Lichess labelled discoveredAttack
15. Nf2+ Qe5 16. Qxe5+ Nxe5 17. Re1 O-O-O 18. Rxe5
Lichess labelled discoveredAttack, pin