|Nov-20-16|| ||YuvalKenoll: I solve it
N:h6！！n:d3+(or g:h6 re8+！q:e8 b:f6+ kg8 qg4+ )q:d3 g:h6 r:e8+！q:e8 b:f6+ kg8 qg3+
Else white threatens k:f7+ with winning advantage as in the game
Nice thing to solve at the way to school！！
|Nov-20-16|| ||al wazir: I would have played on for a few more moves: 24...Rxe1+ 25. Kd2 Re2+ 26. Kxe2 (26. Kd3 Be4+ 27. Kxe2 Bxf5) Qe6+ 27. Qxe6 fxe6.|
|Nov-20-16|| ||R4f43l L3 M4550n: Great Knight move!
I tried Queen at h5 first with the idea of both Nxh6 and Re3-g3 (or Re3-h3) with attack.
Although my guess isn't in the text I believe it is winning too.
|Nov-20-16|| ||patzer2: The familiar phrase "there's more than one way to skin a cat" seems to apply to today's Sunday puzzle (19. ?).|
According to http://english.stackexchange.com/qu..., the origin of the phrase goes back to 1832 when the British House of Commons debated a bill to outlaw skinning cats alive. Apparently, the advocates of the bill thought it more humane to allow the skinning of only dead cats.
In the case of today's puzzle (19. ?), there's more than one solution. However, they're all difficult, and as such are more akin to the difficulty of skinning the cat alive.
In addition to the game move 19. Nxh6 (+2.38 @ 22 depth, Deep Fritz 15), White can also win with 19. Qh5 (+2.92 @ 22 depth, Deep Fritz 15) or 19. Bxh6 (+2.19 @ 22 depth, Deep Fritz 15).
My attempted solution was 19. Bxh6 . Playing it out move by move with Deep Fritz 15, one possible winning line is 19. Bxh6 Nxd3+ 20. cxd3 gxh6 21. Qh5 Qf8 22. Nxh6 Qg7 23. Nxf7+ Kg8 24. Nh6+ Kh8 25. g4 Rf8 26. Kc2 Qh7 27. g5 Bg7 28. Re7 Bc8 29. Nf7+ Kg8 30. Qxh7+ Kxh7 31. h5 Kg8 32. g6 Bf5 33. Rxc7 Ra8 34. c4 Bf8 35. Rb7 Bg7 36. Kd2
Bc8 37. Re7 Bf5 38. b4 a6 39. Nxd6 Bg4 40. Ne8 Bb2 41. h6 Bf5 42. g7 Bg6 43. Kc2 Bd4 44. Rd7 Rxe8 45. Rxd4 a5 46. Rd6 Bf5 47. b5 Rb8 48. Kc3 Bh7 49. Kd4 Kf7 50. c5 bxc5+ 51. Kxc5 Bg6 52. b6 Bh5 53. b7 a4 (53... Rxb7 54. Rd8 mate-in-seven) 54. d4 Be2 55. f5 Bg4 56. Ra6 Bxf5 57. Ra8 with mate-in-seven.
P.S.: For a Black improvement, replacing 14. Nd7? 15. Re1 (+0.97 @ 25 depth, Komodo 9.3) with 14. Ng4 15. Kb1 Qd7 16. Ne3 = (0.11 @ 28 depth, Komodo 10) looks good.
In the opening, instead of 8...b6 = to , I prefer 8...Nbd7 = as in Karjakin vs Gelfand, 2011.
|Nov-20-16|| ||mel gibson: DR4 64 bit is only giving an advantage to white of +2.3.|
Not really a crushing move.
|Nov-20-16|| ||AlicesKnight: I saw the Nxh6 capture and the following exchanges but missed completely how vulnerable the Black K was afterwards - the N does not die and covers the squares by which the Black Q could intervene, along with the R's command of the file against his opposite number.|
|Nov-20-16|| ||Dilbertarian: 20... Qf8 (instead of Qd7) holds on a little longer.|
|Nov-20-16|| ||piltdown man: What a beautiful final move.|
|Nov-20-16|| ||perfidious: An aesthetically pleasing attack spells the end of the Romanov dynasty.|
|Nov-20-16|| ||agb2002: The material is identical.
Black threatens hxg6, Nxd3+ and Bxg2.
The first threat and the position of the black royal family suggest 19.Nxh6:
A) 19... Nxd3+ 20.Qxd3
A.1) 21... gxh6 22.Re8+
A.1.a) 22... Qxe8+ 23.Bxf6+ Kg8 24.Qg6+ Kf8(h7) 25.Qg7#.
A.1.b) 22... Kg7 23.Rxd8 + - [Q+P vs R+B].
A.2) 21... Qd7 22.Bxf6 gxf6 23.g4 with an extra pawn and much better position.
A.3) 21... Qf8 22.Bxf6 gxf6 23.Nf5 as above (23... Bxg2 24.Rg1 followed by Qe2 and Qh5 wins).
A.4) 21... Bxf6 22.Nxf7+ wins.
B) 19... gxh6 20.Re8+
B.1) 20... Qxe8 21.Bxf6+ Kg8 22.Qg4+ Kf8 23.Qg7#.
B.2) 20... Kg7 21.Rxd8 as in A.1.b.
C) 19... Bd5 20.Ng4
C.1) 20... Bxg2 21.Nxf6 gxf6 (or 21... Nxd3+ 22.Qxd3) 22.Re8+ as above.
C.2) 20... Bxg5 21.hxg5
C.2.a) 21... Bxg2 22.Rg1 Bb7 23.Nf6 (threatens Rh1+ and Re8+)
C.2.a.i) 23... gxf6 24.Qh5+ Kg8 (24... Kg7 25.Qh6+ Kg8 26.gxf6+ Bg2 27.Qg7# or 27.Rxg2#) 25.gxf6+ Kf8 26.Qh8#.
C.2.a.ii) 23... Nxd3+ 24.Qxd3 gxf6 25.Qh3+ as above.
C.2.b) 21... Be6 22.Rh1+ Kg8 23.Bh7+ Kf8 24.Be4 and the double threat Rh8+ and Bxa8 seems to win decisive material.
C.2.c) 21... Nxd3+ 22.Qxd3 looks similar to previous lines.
C.3) 20... Nxd3+ 21.Qxd3 also looks similar to previous lines.
|Nov-20-16|| ||morfishine: The execution of the Romanovs|
|Nov-20-16|| ||GrandMaesterPycelle: Nxh6 is smart, I would have just gone for Qh5. And since it's also apparently winning, why calculate all this?|
|Nov-20-16|| ||matvox: not a four star|
|Nov-20-16|| ||Pawn Slayer: I would have played 19.Qh5 without much hesitation, forgetting Fischer's maxim "If you see a good move, don't play it. There might be a better one".|
I think it wins anyway.
|Nov-20-16|| ||morfishine: 19.Nxg7 wins, so does 19.Re8+
The spoiler today is to find the move that does not win
|Nov-20-16|| ||Jimfromprovidence: I wondered why black did not try 22...Kg7 below, instead of the text 22... Kh7, as 22...Kg7 protects the f pawn.|
click for larger view
It loses, however, to 23 Re7!
click for larger view
If 23...Qxe7, then 24 Nf5+.
If 23...Qd8, then 24 Rxf7+ Kxh6 25 Rxf6+, etc.,
|Nov-20-16|| ||PeterJ: At the end 24...Re1+ will force an endgame e.g. 25 Kd2, Re2 26 Ke2, Qe6+
although still winning for white suggests that he could have done better.|
|Nov-20-16|| ||devere: <Pawn Slayer: I would have played 19.Qh5 without much hesitation, forgetting Fischer's maxim "If you see a good move, don't play it. There might be a better one". I think it wins anyway.>|
Actually, 19.Qh5 is the best move , Stockfish +3.59 depth 41 ; 19.Bxh6 +2.14; 19.Nxh6 +1.88 with best defense. As the game went, 20...Qd7 was an error; Qf8 was the best defense.
In my case I saw almost immediately that 19.Nxh6 was good (and had a flashy combination backing it up), and I stopped looking for anything better.
The quote you attribute to Fischer is most often attributed to Emanuel Lasker.
|Nov-20-16|| ||Marmot PFL: Not sure this puzzle is all that insane as I found 19 Nxh6 gh 20 Re8+ Qxe8 21 Bxf6+ Kg8 22 Qg4+ very quickly and also 19...Nxd3+ 20 Qxd3 gh6 21 Re8+ Qxe8 22 Bxf6+ Kg8 Qg3+ is no better. Black can avoid these mating lines but always seems to lose material.|
One thing I don't understand is black's rush to castle king side. When I play the black side I develop the queen side pieces first and wait to see where white puts his king. This line is playable too (and probably the main line) but I like the greater flexibility of delayed castling.
|Nov-20-16|| ||RandomVisitor: After 18...Nc5
click for larger view
+3.71/37 19.Qh5 Bxg5 20.hxg5 Qf8 21.Re7 Bd5 22.Rxc7 Be6 23.Nd4 g6 24.Qxh6+ Qxh6 25.gxh6 Kg8 26.Bb5 Bd5 27.g4 a6 28.Bc6 Bxc6 29.Rxc6 Re8 30.Rxd6 Re4 31.Rf6 g5 32.fxg5 Rxg4 33.Rxb6 Rxg5 34.b4 Na4 35.Rxa6 Nxc3 36.Kd2 Nd5 37.a3 Rg4 38.Kd3 Kh7 39.b5 Rh4 40.c4 Nf4+ 41.Kd2 Rh3 42.Kc2 Nd3 43.Rf6 Nc5 44.b6 Rxh6 45.Rxf7+
+2.01/37 19.Bxh6 Bc8 20.Bg5 Nxd3+ 21.Qxd3 Bxf5 22.Qxf5 Kg8 23.Qd5 Rc8 24.Qc6 d5 25.g3 d4 26.Bxf6 gxf6 27.Rd1 Qe7 28.Qf3 Qe3+ 29.Qxe3 dxe3 30.Rd7 Kh8 31.Re7 Rd8 32.Rxe3 Rd7 33.Rd3 Re7 34.Kd2 Kh7 35.c4 f5 36.Re3 Rd7+ 37.Ke2 Kg6 38.b3 Kh5 39.Rd3 Re7+ 40.Kf3 f6 41.Rd5 Kg6 42.Rd8 a6
+1.74/37 19.Nxh6 Nxd3+ 20.Qxd3 Qf8 21.Bxf6 gxf6 22.Nf5 Re8 23.Rxe8 Qxe8 24.Qd1 Qg8 25.g4 Qe8 26.b3 Qe4 27.Qd4 Qe6 28.Qe3 Kh7 29.c4 d5 30.cxd5 Bxd5 31.Kb2 c5 32.Qc3 Bc6 33.h5 a5 34.Qd2 Qd7 35.Qe3 Qe6 36.Qc3 a4 37.bxa4 Bxa4 38.Qd3 Qd7 39.Nd6+ Kh6 40.Qd5 Bc6 41.Qxf7 Qxf7 42.Nxf7+ Kg7 43.Nd6 Bf3 44.Nf5+ Kh7 45.Ne3 Kh6 46.Kb3
|Nov-20-16|| ||amineadeola: Pls can someone show me how Qh5 wins with accurate play, I m interested please|
|Nov-20-16|| ||TheBish: Y Kryvoruchko vs E Romanov, 2015|
White to play (19.?) "Insane"
I found only one candidate move that makes any sense, with the lines easy to calculate. If I'm correct, this is one of the easier Sunday puzzles in recent memory.
19. Nxh6! (threat: Nxf7+) and now:
(a) 19...gxh6 20. Re8+! Qxe8 21. Bxf6+ Kg8 22. Qg4+ followed by 23. Qg7#.
(b) 19...Nxd3+ doesn't change much, as after 20. Qxd3 gxh6 21. Re8+! Qxe8 22. Bxf6+ Kg8 23. Qg3+ followed by 24. Qg7#.
So it seems Black must find a better defense and grovel, hoping to be just a pawn down, but I don't think it's that easy. He must defend f7 first of all, but 19...Qd7 looks bad after 20. Bxf6 gxf6 21. Qh5 (which looks crushing), so 19...Bd5 looks to be the best try, where I think simply 20. c4 looks strong, meeting 20...Be6 with 21. Rxe6! with a renewed threat of Nxf7+. After seeing this much, I think I would go ahead and play 19. Nxh6! and calculate the follow-up on my opponent's time! But I think I've seen enough to look at the game now...
|Nov-20-16|| ||RandomVisitor: A final look, after 18...Nc5:
click for larger view
+3.62/39 19.Qh5 Bxg5 20.hxg5 Qf8 21.Re7 Bd5 22.Rxc7 Be6 23.Nd4 g6 24.Qxh6+ Qxh6 25.gxh6 Kg8 26.Bb5 Bd5 27.g4 a6 28.Bc6 Bxc6 29.Rxc6 Re8 30.Rxd6 Re4 31.Rf6 g5 32.fxg5 Rxg4 33.Rxb6 Ne4 34.Kd1 a5 35.Ra6 Rxg5 36.Ke2 Re5 37.Kf3 Nd2+ 38.Kf4 Re4+ 39.Kf5 Re1 40.b3 Kh7 41.c4 Rf1+ 42.Ke5 Nf3+ 43.Nxf3 Rxf3 44.Rf6 Rc3 45.Rxf7+ Kxh6 46.Rf2 Kg5 47.Kd4 Rh3 48.c5 Rh7 49.c6 Kg4 50.Kd5
+2.20/39 19.Bxh6 Bc8 20.Bg5 Nxd3+ 21.Qxd3 Bxf5 22.Qxf5 Kg8 23.a3 d5 24.g3 a5 25.Bxf6 Qxf6 26.Qxf6 gxf6 27.Re7 Rc8 28.Kd2 Kg7 29.Rd7 c6 30.f5 Re8 31.Rd6 Rc8 32.Kd3 Rc7 33.c4 dxc4+ 34.Kxc4 Rc8 35.b3 Rc7 36.g4 Rc8 37.Kd4 Rh8 38.h5 Rc8 39.c4 Rc7 40.Ke3 Rc8 41.Ke4 Rc7 42.Kf4 Rc8 43.b4 axb4 44.axb4 b5
+1.81/39 19.Nxh6 Nxd3+ 20.Qxd3 Qf8 21.Bxf6 gxf6 22.Nf5 Re8 23.Rxe8 Qxe8 24.Qd1 Qg8 25.g4 Qe8 26.b3 Qe4 27.Qd4 Qe6 28.Qe3 Kh7 29.c4 Kg6 30.Kb2 Kh7 31.Qd2 Kg8 32.Qc3 Kh7 33.Kb1 a5 34.Kb2 Kg8 35.h5 Be4 36.Qg3 Kh7 37.Nd4 Qd7 38.Nb5 d5 39.Nc3 c6 40.cxd5 cxd5 41.f5 Qc6 42.Qf4 Qc5 43.Qd2 Bf3 44.Qf4