| Feb-04-21 | | mel gibson: Stockfish 12 agrees with the text but gives only
a 2 pawn advantage.
29... Bxh4
(29. .. Bxh4 (♗f6xh4 g3xh4
♘f5xh4+ ♔g2-h1 g6-g5 ♖e1-g1 ♔g7-h6 ♖g1xg5 ♔h6xg5 ♖c1-g1+ ♔g5-h6 ♖g1-g3
♘h4-f5 ♖g3-g2 ♘f5-g7 ♕d2-c1 ♖e7-e6 e3-e4 ♔h6-h7 ♘f4xe6 ♖e8xe6 e4xd5 c6xd5
♖g2-g5 ♕d7-c6 ♕c1-g1 ♖e6-g6 ♘c3xd5 ♘g7-f5 ♖g5xg6 f7xg6 ♕g1-g2 ♘f5xd4 ♕g2-e4
♘d4-f5 ♔h1-g1 ♔h7-g7 ♕e4-e5+ ♔g7-f7 ♘d5-e3 ♕c6-c1+ ♘e3-f1 ♕c1-g5+ ♔g1-h2
♕g5-h4+ ♔h2-g2 ♕h4-g4+ ♔g2-h1 ♕g4-d4 ♕e5-c7+ ♔f7-f6 ♔h1-g1 ♕d4-g4+ ♔g1-h1
♕g4-e4+ ♔h1-g1 h5-h4 ♕c7-b8 a7-a6 ♕b8-h8+ ♔f6-g5 ♘f1-h2 ♘f5-d4 ♕h8-d8+
♔g5-f5 ♕d8-f8+ ♔f5-e6 ♕f8-g8+ ♔e6-d6 ♕g8-d8+ ♔d6-c5) +1.81/40 91) score for Black +1.81 depth 40 |
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| Feb-04-21 | | saturn2: The first two game moves spring into the eye quickly.
Black can get R+2 P for B+N. But keeping the black N which together with the queen creates mate threats is. better. Since there is no immediate blow I would not call this a tactic but rather a positional sacrifice. |
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| Feb-04-21 | | Brenin: Resignation because of 33 ... Qh4+ 34 Kg2 Nxg1 35 R(or K)xg1 Qxf4 36 exf4 Rxe2 37 Nxe2 Rxe2 with a winning endgame. |
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| Feb-04-21 | | Walter Glattke: 29.-Bxh4 30.gxh4 Nh5+31.Kf1 (31.Kg3 Qg4+ 32.Kh2 Nf3+ 33.Nxd2/31.Kh2 Nf3+ 32.Kg2 Nxd2) 31.-Nf3 32.Qd3 Qg4 33.Na4 Nh2# sudden death |
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| Feb-04-21 | | goodevans: If it had been a weekend puzzle then I might have looked for other candidates but since it's a weekday I settled for 29...Bxh4 30.gxh4 Nxh4+ 31.Kh1 (only move) 31...Nf3 (what else?) pretty quickly even though I wasn’t seeing a clear win beyond that. Lazy of me, I know. White's fatal mistake was putting his Q on the same file as black's two Rs. That meant that <32...Qg4> carried the threat of <33...Qxf4> as well as <33...g5> and there's no satisfactory way to meet both. Put the Q somewhere else and 32...Qg4 carries only a single threat that is easily parried by 33.Rg1. Black will win the exchange but having already sac'd his B the advantage isn't obvious. |
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| Feb-04-21 | | saturn2: <goodevens 29...Bxh4 30.gxh4 Nxh4+ 31.Kh1 (only move)> 31...Kh2 and Kg1 are tabu because of the familyfork. Kg3 or Kf1 deserve at lesst mentioning. |
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| Feb-04-21 | | Brenin: <saturn2>: 31 Kg3 loses the Q by Qg4+ 32 Kh2 Nf3+ and 33 ... Nxd2, while 31 Kf1 allows Nf3, winning significant material, e.g. 32 Qd1 Qg4, threatening Nh2# |
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| Feb-04-21 | | goodevans: <saturn2: [...] Kg3 or Kf1 deserve at lesst mentioning.> <31.Kg3 Qg4+> is obviously losing to the same family fork but you're right that <31.Kf1> needs a mention. Blocking the R from getting to g1 makes the combination of <31...Nf3> and <32...Qg4> impossible to deal with properly. A couple of examples: 31.Kf1 Nf3 32.Qc2 Qg4 33.Red1 Qg1+ 34.Ke2 Rxe3+ 35.fxe3 Rxe3# 31.Kf1 Nf3 32.Qd3 Qg4 (threatening 33...Nh2+ 34.Ke1 Qxf4) 33.Ng2 h4! (again threatening 34...Nh2+) 34.Ne2 h3 is clearly winning |
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Feb-04-21
 | | chrisowen: DHL I guess it was dot Bxh4 ham a clung on muggy ables ins batcher luv DHL grubs victor pin quick flaws com ivory jeez it rust i goals gab it within mendy quips rooms luv rum add etcetera affable ivory aquakong deity Bxh4 cheers! |
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Feb-04-21
 | | Honza Cervenka: This is one of Jansa's pet opening lines with black pieces. I would not recommend to try to test it playing with him unless you are extremely well prepared for that. |
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Feb-04-21
| | chrisowen: Crippled his pawns gxh4 jai ho. |
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Feb-04-21
 | | Korora: <Resignation because of 33 ... Qh4+ 34 Kg2 Nxg1 35 R(or K)xg1 Qxf4 36 exf4 Rxe2 37 Nxe2 Rxe2 with a winning endgame.> ♔, ♖, and five ♙s against ♔, ♖, and seven ♙s, and two of the five are doubled (with one of those pinned). Black is aiming at the ♙ on a2, and moving it (38.a3 or 38.a4) or guarding it (38.♖a1) alike can be answered with 38...♖d2 and the isolani falls (giving Black another passer). |
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Feb-04-21
| | chrisowen: Ghosts an ghouls h4 all the way baby no? |
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| Feb-04-21 | | Refused: 29...Bxh4! has to be the move. 30.gxh4 is the critical line obviously. 30...Nxh4+ 31.Kh1 Nf3 this looks good enough. Qg4 is coming and white has quite a few problems to solve. |
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| Feb-04-21 | | agb2002: Black has a bishop for a knight.
Black can expose the white king with 29... Bxh4: A) 30.gxh4 Nxh4+
A.1) 31.Kh2(g1) Nf3+ wins.
A.2) 31.Kg3 Qg4+ 32.Kh2 Nf3+ wins.
A.3) 31.Kf1 Nf3
A.3.a) 32.Qe2 Qg4 and the double threat Qg1# and Nh2# wins decisive material. A.3.b) 32.Qc2 Qg4 33.Red1 (due to Nh2#) 33... Nh2+ 34.Ke1 Qxf4 wins two pawns at least. A.4) 31.Kh1 Nf3
A.4.a) 32.Qe2 Qg4
A.4.a.i) 33.Rf1 Qxf4 34.exf4 Rxe2 35.Nxe2 Rxe2 wins at least three pawns for the exchange. A.4.a.ii) 33.Red1 g5 34.Rg1 Qh4+ 35.Kg2 Qh2+ 36.Kxf3 (36.Kf1 Qxg1#) 36... g4+ 37.Rxg4 hxg4+ 38.Kxg4 f5+ looks winning (39.Kxf5 Rf8+ followed by Rxf4). A.4.b) 32.Qd1 Nxe1 33.Qxe1 Qg4 followed by Rh8 and the advance of the king side pawns. B) 30.e4 dxe4 31.gxh4 Nxh4+ looks worse for White than A. |
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| Feb-04-21 | | RandomVisitor: After 29.Qd2, black has 29...Bxh4, but in the given computer line white can sac a rook for pressure and black must play carefully:
click for larger viewStockfish_21013116_x64_modern:
55/83 3:04:50 -0.92 29...Bxh4 30.gxh4 Nxh4+ 31.Kh1 g5 32.Rg1 Kh6 33.<Rxg5 Kxg5> 34.Qe2 Rh8 35.Rg1+ Kf6 36.e4 Ng6 37.Nxh5+ Rxh5+ 38.Qxh5 dxe4 39.Qg5+ Kg7 55/64 3:04:50 -0.38 29...Kg8 30.Kh2 Bg7 31.Nce2 Bf8 32.Rf1 a6 33.a4 Kg7 34.Qd1 a5 35.Nd3 Qd8 36.Nef4 Rc7 37.Rc2 Bd6 38.Qf3 Nh6 39.Kg1 Rce7 |
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| Feb-04-21 | | RandomVisitor: The computer prefers the 31...g5 line (above) over the 31...Nf3 line as played, probably because it can grab more 'centipawns' after the improvement 32.Qd1 Nxe1 33.Qxe1 and now:
click for larger viewStockfish_21013116_x64_modern:
<53/68 46:26 -0.59 33...g5 34.Qg1> f6 35.Qg2 h4 36.Nfe2 Qf5 37.b4 Kf7 38.a4 Rg8 39.Rg1 a6 40.Qh2 Ree8 41.Qc7+ Ke6 42.Qh2 Rg7 43.Rf1 Kf7 53/52 46:26 -0.50 33...Qf5 34.Qf1 g5 35.Qh3 Qxh3+ 36.Nxh3 Kh6 37.Ng1 Rf8 38.Nf3 a5 39.Kg2 f6 40.Rh1 h4 41.Ne1 Rfe8 42.Nd3 Kh5 43.Rc1 Rh7 |
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| Feb-04-21 | | Cheapo by the Dozen: I initially saw the first three moves quickly, decided that rough material equality plus an attack was plenty, and reserved the right to change the third move later. Unfortunately, I overlooked the e-file pin and did change the third move to 31 ... g5, because White loses catastrophically if the knight moves, as ... Nf6 will now be threatening both White's queen and a quick mate. But the engine thinks that pinning and then saccing the rook for the g5 pawn is a stronger defense for White than I anticipated. |
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Kibitzing
sac: 29...Bxh4