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Later Kibitzing> |
| Oct-30-15 | | wooden nickel: Nice endgame! 43... Rc8 stands out today, reflecting the queen from protecting the bishop while gaining a crucial position. Black's last swindle chance might only be
44.Qd3 Rc2 45.Nd4 exd4 46.Qxd4+ Kg8, leading to perpetual check... but not at this level!
click for larger viewI was wondering if 43... Rd8 wins as well, it's just not as forced as the text move. |
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| Oct-30-15 | | dfcx: 43...Rc8 and white is doomed.
A. 44.Qxc8? Qxe2 45.h4 Qf2+ 46.Kh1 e2 and white can't stop the promotion. B. 44.Qd3 Rc2
B1. 45.Nd4 Rd2 wins a piece.
B2. 45.Bf1 e2 46.Bxe2 Rxe2 wins |
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| Oct-30-15 | | varishnakov: 43...R-QB1 44.QxR QxB 45.Q-B1 (to prevent mate) black can force a perp if there's no win. If instead of taking the rook, 44.Q-Q3 R-B7 if 45.B-B3 the pawn can advance otherwise at least a perp should be in the cards |
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| Oct-30-15 | | kevin86: I think the pawn fork will team white to bits! |
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Oct-30-15
 | | HeMateMe: A merger of two fast food joints? |
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Oct-30-15
 | | Penguincw: A sacrifice didn't come to my mind, even if the sac ends up getting rejected. Instead, I came up with 43...Qb1+ 44.(any) Qf5. |
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| Oct-30-15 | | CHESSTTCAMPS: In this ending, white has the slight material advantage of knight plus bishop for rook plus pawn. However, a conventional, static material count does not give due credit for black's advanced passed pawn, the greater vulnerability of the white king on the first rank, and black's splendid queen position, which attacks both white minor pieces in a way that ties down the white queen. This suggests that the white queen should be deflected: 43... Rc8!! Acceptance of the exchange sacrifice loses quickly and there is no saving defense. A.44.Qxc8 Qxe2 45.Qc1 (Nc1 Qf2+ 46.Kh1 Qf1#) Qf2+ 46.Kf1 e2 followed by e1=Q(+) is unstoppable. B.44.Qd3 Rc2 45.Bf1(/f3) Rg2+!! 46.Bxg2 Qf2+ 47.Kh1 e2 48.Qxe2 Qxe2 49.h3 Qd1+ 50.Kh2 Qxb3 wins. B.1.45.Kf1 Qb1+ 46.Kg2 (46.Bd1 Rf2+ wins Q; 46.Qd1 Qxb3 wins) Qb2 47.Kf3(or f1) Rc3 wins the knight and preserves the e3 pawn. B.2 45.Bd1 (and other bishop moves) Rg2+ 46.Kh1 (Kf1 Qf2#) Rxh2+ 47.Kg1 Qg2# C.45.Qg4 f5 46.Qf3 Qxb3 wins.
D.45.Qe4 Qxe2 46.Qxe5+ Kg8 and white is defenseless against the dual threat of Qf2+ and Qd1+. Time for review... |
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| Oct-30-15 | | PJs Studio: What makes this puzzle tougher is that at move ...41 black is forced to go to the back rank for recapture. At that point he realizes his opponent sees 42. Bxc4?? loses to 42...Qa1+ So black (OTB) would much more easily seen the "diversion" tactic leaving the queen overloaded defending the back rank and e2 I'll bet all of you would've found it OTB. (The real roblem is, none of us would've gotten to move 42 against 2500+ GM Ian Rogers. ;) Happy Weekend |
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| Oct-30-15 | | Rookiepawn: 
click for larger viewI calculated this variant until here, but then I don't know what happens if 47. Kf1. Kf3 seems like a blunder to me while I cannot see anything forced if the WK just goes back to f1. What the hell I am missing? |
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| Oct-30-15 | | PizzatheHut: <Rookiepawn> I think 47...Rc3 followed by 48...Rxb3 wins the knight and the e3 and e5 pawns are defended. |
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| Oct-30-15 | | patzer2: Found 43...Rc8 easy enough for my Friday solution, and the follow-up moves seem logical and not too difficult to find. Black's near decisive mistake according to Deep Fritz 14 is 37. Ra6?, allowing 37...dxe4  (-1.79 @ 22 depth). Instead, Fritz indicates White can hold on with 37. Kg1 when play might continue 37...dxe4 38. Nxe4 Qd5 39. Bf3 Nc4 40. Qa7 Qd8 41. Be2 Bxe4 42. Bxc4 Rxb4 43. Bxf7 Qd4+ 44. Qxd4 exd4 45. Be8  (-0.41 @ 21 depth). Earlier, 14. Nxh4!? makes for an interesting struggle for equality as Fritz indicates play might continue 14...Rxh4 15. gxh4 Nh5 16. Qd1 Qxh4 17. Qf3 Nc5 18. Nb3 Bg4 19. Qe3 Nf4 20. Nxc5 Ne2+ 21. Kh1 O-O-O 22. h3 Rh8 23. Nxb7 Bxh3 24. Nxd6+ cxd6 25. Qxh3+ Qxh3+ 26. Bxh3+ Rxh3+ 27. Kg2 Nf4+ 28. Kg1 Ne2+ 29. Kg2 Nf4+ 30. Kg1 Ne2+ 31. Kg2 = with a draw by three-fold repetition. |
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Jul-05-19
 | | al wazir: T got the first two moves. This is the third time I've tried to solve this puzzle. Of course I didn't remember the position from the two previous times, and my achievement was about the same as before. |
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| Jul-05-19 | | seneca16: Annoyed that I missed Rc8. I thought Ra8 would win, threatening Ra3 Bd1 e2. The white pieces are tied up preventing threats against the king, e.g. if the knight moves black can check and then bring the rook to A1. White's pawn cannot queen in time to help. Rc8 is a simpler, more powerful exploitation of the white king's vulnerability. |
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Jul-05-19
 | | OhioChessFan: I was a bit frustrated for a couple minutes as I couldn't even figure out the point of the puzzle, much less the moves. Once I realized you have to get the Queen off that diagonal, Rc8 was easy to spot. |
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| Jul-05-19 | | 1stboard: Looks like white anticipated black playing 47 Rc3 winning a piece and still has the pressure of the e pawn .... |
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| Jul-05-19 | | TheaN: Not a terribly hard Friday simply because of deduction: what else? Some clear alarms going off here for Black <I want my queen on e2>. So, <43....Rc8!>. Typically, White doesn't have a large array of moves to choose from: the queen's rather overworked. Staying on the c-file leads to RxQ -+ (except on c8, obviously), a4, d4 and f4 also throw the queen (Q/PxQ -+), b4 and h4 give up defense of e2 freely (Qxe2 -+), g4 defends Be2 but abandons something else (Qxb3 -+), whereas <44.Qd5/Qe4 Qxe2 45.Qxe5+ Kh7 -+<>>. The only non-queen move that makes sense throws a piece (so exchange effectively) <44.Nc5 Qxc4 45.Bxc4 Rxc5 -+<>>. This leaves taking the rook or keeping tabs on both pieces with Qd3. <44.Qxc8 Qxe2<>> White needs a move to guard f1 or create luft to prevent Qf2+ with Qf1# <45.Qc1/Qh3/h4 Qf2+ 46.Kh1 e2 -+<>> and the e-pawn can't be stopped. <44.Qd3> definitely the main variation. <44....Rc2! -+> I sort of stopped here as I thought the pressure along the second rank was enough to give Black initiative and the win, but it's not THAT easy. A bishop move that's not f1 or f3 leads to Rg2+ with mate. After 45.Bf1/Bf3 e2 -+. So that leaves <45.Kf1 Qb1+ 46.Kg2 (Qd1 Qxb3 -+; Bd1 e2+ -+) Qb2! -+> this small triangle is significant as Black's now threatening both Rxe2 and Rc3. In fact, there's no proper defense against this. After the game line Kf3, Black could choose e4+ but the complications can be drawish, but just Rc3 -+ and it's done. |
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| Jul-05-19 | | mel gibson: I thought about that move but I wasn't sure.
Stockfish 10 agrees with the text:
43... Rc8
(43. .. Rc8 (♖b8-c8 ♕c4-d3 ♖c8-c2 ♔g1-f1 ♕a2-b1+ ♔f1-g2 ♕b1-b2 ♔g2-f3
♖c2-c3 ♕d3-d8 ♖c3xb3 ♕d8-d5 ♖b3-a3 b5-b6 ♖a3-b3 b6-b7 ♖b3xb7 ♔f3xe3 ♖b7-b6
♕d5-e4 ♖b6-b4 ♕e4-d5 e5-e4 ♔e3-f2 ♖b4-b6 ♕d5xe4 ♖b6-f6+ ♔f2-g2 ♖f6-e6
♕e4xe6 f7xe6 ♔g2-f3 e6-e5 h2-h4 ♕b2-d4 ♔f3-g2 e5-e4 g3-g4 ♕d4-e3 ♔g2-f1
♕e3-h3+ ♔f1-e1 ♕h3xh4+ ♔e1-d2 ♕h4-f2 ♔d2-d1 ♕f2-e3 ♔d1-e1 ♕e3-d4 ♔e1-f1
♕d4-d2) +13.88/42 272)
score for Black +13.88 depth 42. |
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| Jul-05-19 | | agb2002: Black has a rook and a pawn for a bishop and a knight. The white queen protects the minor pieces and White's second rank is weak. Therefore, 43... Rc8: A) 44.Qxc8 Qxe2 45.Qc1 (due to 45... Qf2+ 46.Kf1 Qf1#) 45... Qf2+ 46.Kh1 e2 wins. B) 44.Qd3 Rc2
B.1) 45.Kf1 Qb1+
B.1.a) 46.Kg2 Qb2, with the double threat Rxe2+ and Rc3, seems to win decisive material. B.1.b) 46.Bd1 Rf2+ wins the queen.
B.1.c) 46.Qd1 Qxb3 wins the knight.
B.2) 45.Bf1(3) Rg2+ 46.Bxg2 (46.Kf1 Qf2#; 46.Kh1 Rxh2+ 47.Kg1 Qf2#) 46... Qf2+ 47.Kh1 e2 wins. B.3) 45.Bd1 Rg2+ and mate in two.
B.4) 45.Qe4 Rxe2 46.Qxe5+ Kh7 wins.
C) 44.Qe4 Qxe2 45.Qxe5+ Kh7 wins. |
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| Jul-05-19 | | Venans: Why black won the game, is puzzling for me. The only plausible explaination is that white was in time trouble and eventually lost on time. |
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| Jul-05-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 24 dpa done
1. = / + (-0.48): 22...Rfc8 23.Qb3 Qd8 24.Nf5 Nb6 25.Ne3 Bb5 26.Rf2 Ra4 27.Nb1 Rca8 28.Rc1 Bd7 29.Nc3 Ra3 30.Qc2 Qb8 31.Qb2 Qc8 32.Rff1 Ng4 33.Nxg4 Bxg4 34.Qf2 Qd7 35.h3 2. = / + (-0.43): 22...Rfb8 23.Qxc7 Kf8 24.Ra1 Rxb4 25.Rfb1 Rxb1+ 26.Rxb1 Nc5 27.Rb8+ Rxb8 28.Qxb8+ Ne8 29.Qb1 g6 30.Nc4 Kg7 31.Nf3 Bc8 32.Qb6 Ba6 33.Nfd2 Qg5 34.Qb2 Qd8 35.Qc3 Nf6 36.Nxe5 Qb6 37.Nec4 Ncxe4+ 38.Nxb6 Nxc3 39.Nbc4 Bxc4 40.Nxc4 |
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| Jul-05-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 20 dpa done
1. = / + (-0.34): 22.Ra1 Ra7 23.Rfb1 Rfa8 24.Qc2 Qf8 25.Bf1 Ng4 26.Ra3 Qb8 27.h3 Qb6+ 28.Kh1 Ne3 29.Qd3 Nxf1 30.Qxf1 Bb5 31.Qg1 Qb7 32.Kg2 Qc8 33.Rba1 c6 34.dxc6 Qxc6 35.Rc1 2. = / + (-0.45): 22.Rc1 Rfb8 23.Qxc7 Rxb4 24.Nh4 Kf8 25.Rb1 Rxb1 26.Rxb1 Nc5 27.Rb8+ Rxb8 28.Qxb8+ Ne8 29.Nhf3 Bg4 30.Qb6 Bxf3 31.Bxf3 Qg5 32.Nf1 Qc1 33.Qb4 g6 34.Kg2 Nf6 35.Qd2 Qa1 36.Qe3 Kg7 3. = / + (-0.49): 22.Rb1 Rfc8 23.Qd3 c5 24.dxc6 Rxc6 25.Rfc1 Qd8 26.Rxc6 Bxc6 27.h3 Qb6+ 28.Kh2 Bb5 29.Qb3 Rc8 30.Ng5 Qb7 31.Bf1 Rc3 32.Qa2 Be8 33.b5 Nc5 34.Re1 Nd3 35.Qa5 Nxe1 36.Qxc3 Bxb5 37.Bxb5 Qxb5 38.Qc8+ Qe8 39.Qc4 Qd7 |
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| Jul-05-19 | | Diana Fernanda: Hello, great game,after of 47. King f3, the black win with e4 check. |
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| Jul-05-19 | | TheaN: <Diana Fernanda: Hello, great game,after of 47. King f3, the black win with e4 check.> I think that is what Popov saw and resigned (as that can be demotivating if you see such a move), and Rogers intended to play Rc3! The problem after <47....e4+?! 48.Qxe4 Rxe2 49.Qd4+! Qxd4 50.Nxd4 Rxh2 51.Kxe3 ∓<>>
click for larger view
Might be a bit hard to convert. 47....Rc3 -+ gives White no counterplay. |
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| Jul-05-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 22 dpa done
1. = / + (-0.37): 21...Qd8 22.Rc1 Ra7 23.Ng5 Qb8 24.Rf3 Rb7 25.Rb1 0-0 26.Kh1 Ra7 27.Qb3 Bg4 28.Rff1 Qb5 29.Ra1 Rfa8 30.h3 Bd7 31.Rfc1 Qe2 32.Nc4 Nb6 33.Na5 Qd2 34.Nf3 2. = / + (-0.35): 21...0-0 22.Ra1 Rfb8 23.Rfc1 Rb7 24.Qb3 Qf8 25.Ne1 Nc5 26.Qc3 Rxa1 27.Rxa1 Na4 28.Qb3 Qb8 29.Nc2 Qa7+ 30.Kh1 Qf2 31.Nc4 Nb6 32.Nxb6 Qxb6 33.Qc3 Ng4 34.h3 Nf2+ 35.Kh2 Rb8 36.Ne3 Qxb4 37.Qxc7 |
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| Jul-05-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 20 dpa done
1. = (-0.25): 26.Rc1 Bd7 27.h3 Qd8 28.Kh2 Nc5 29.Qc3 Rxa3 30.Qxa3 Na4 31.Qb3 Rb7 32.Rf1 Rb6 33.Qa3 Rb8 34.Qb3 Ra8 35.Qe3 Nb6 36.Nhf3 Bb5 37.Rc1 Ra7 38.Bf1 Bxf1 39.Rxf1 Ra2 40.Rc1 Qd7 41.Kg2 Nh5 2. = / + (-0.29): 26.Bf1 Bd7 27.Kg2 c5 28.b5 c4 29.Bxc4 Nc5 30.Qb4 Rxa3 31.Qxa3 Bxb5 32.Rb1 Ncxe4 33.Rxb5 Nxd2 34.Rxb8 Nxc4 35.Qa6 Ne3+ 36.Kg1 Nexd5 37.Nf3 e4 38.Rb7 Nc7 39.Qe2 Nfd5 40.Nd4 Qe5 41.Nc6 Qa1+ 42.Kg2 Qc3 43.Qb2 Ne3+ 44.Kh3 Qxb2 45.Rxb2 26. Rea1 is not good, it would loose.? |
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< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing> |
Kibitzing
sac: 41...Qxa8