| May-24-20 | | Cheapo by the Dozen: Some thoughts:
1. White's first couple of responses are forced, because the position started out with dead-even material, so giving up a bit of material to avoid the attack is not a good thing to try. 2. Black must have gotten short on time while calculating, given the move repititions that presumably were used to lessen time trouble. 3. "Pinfork"? Really? Yes really. Evidently there's something called the "Pinfork Grand Prix". Punsters, start your ingenuity! |
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| May-24-20 | | Cheapo by the Dozen: Anyhow, this is a case where I would NOT have played the correct line on Spielmannesque faith. It's obvious that Black gets a scary attack. But it's not obvious that he can break through after White turtles up. |
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May-24-20
 | | An Englishman: Good Evening: Oh, well. Another nice, normal 5/7 for the week. Can't wait for Monday. |
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May-24-20
 | | al wazir: The first two moves and the general plan of using the ♘ and ♖ were obvious. The tricky part is after move 32 or so. |
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May-24-20
 | | scormus: Nicey work out by B, who I think saw the overall plan of campaign when playing 18 ... Rxe3. Then worked out how to finish W off later, must have used the reps to buy some thinking time. The N manoeuvres in the second half of the combo were not difficult to find by then, but would have been extremely tough to see at move 18. The key move for me was .... Re8, quietly locking the door on attempts for the WK to escape. An interesting side puzzle is the position after 20 Rf2 instead of Kh1 |
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May-24-20
| | al wazir: <scormus: An interesting side puzzle is the position after 20 Rf2 instead of Kh1> After 20. Rf2 Ng4 21. Qf1 Nxf2 22. Qxf2 Qxb3, black is two ♙s up. |
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| May-24-20 | | agb2002: The white castle is weak and the black queen x-rays the white king. This suggests 18... Rxe3: A) 19.fxe3 Qxe3+
A.1) 20.Rf2 Ng4 21.Qf1 Nxf2 22.Qxf2 Qxb3 - + [2p]. A.2) 20.Kh2 Ng4+ 21.Kh3 (21.Kh1 Qh6+ 22.Kg1 Qh2#) 21... Qh6+ 22.Kxg4 Ne5+ 23.Kf5 Qf6#. A.3) 20.Kh1 Qh6+ (20... Ng4 21.Rf3 followed by Qd2) 21.Kg1 Ng4 (21... Qe3+ if Black settles for a draw) 22.Rxf3 Re8 A.3.a) 23.Nbd4 Qh2+ 24.Kf1 Qh1+ 25.Ng1 Nce5, with the threat Nh2+, unclear. A.3.b) 23.Qxd5 Qh2+ (23... Rxe2 24.Qxf7+ Kh8 25.Qf8#) 24.Kf1 Qh1+ 25.Ng1 Nh2+ 26.Kf2 Nce5 (controls f7 and threatens Ng5#) 27.Rf4 Neg4+ 28.Rxg4 Nxg4+ recovers material but unclear. B) 19.a5 Qxb3 20.fxe3 Qxe3+ as above. |
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| May-24-20 | | AlicesKnight: I saw the opening break and the idea of the subsequent manoeuvres but not the exact detail.The sight of the Black Q completely trapped at move 30 and still winning is vaguely reminiscent of the famous game Tal-Koblents Tal vs Koblents, 1957 |
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| May-24-20 | | Brenin: I got the game line, minus the time-gaining repetitions, as far as Re8, after which I had to trust that the dancing knights would prove too much for White's defences. |
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| May-24-20 | | goodevans: When presented as a puzzle this position is hardly "insane". What alternatives to 18...Rxe3 merit more than a moment's consideration? Over the board you would see that you had in hand the draw by repetition so most of us would go for it in those circumstances too. |
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| May-24-20 | | RandomVisitor: After 18...Rxe3 white has a number of ways to continue, all of which can be countered, but only after careful consideration:
click for larger viewStockfish_20052313_x64_modern:
54/80 -2.20 19.Ra3 Rae8 20.a5 Qa7 21.Ned4 R3e4 22.Ra4 h5 23.Qd3 Ne5 24.Qc3 Nc4 25.Raa1 b5 26.Rad1 Rc8 27.Rc1 Ree8 28.Nf5 Qd7 29.Nfd4 Ne4 30.Qf3 Nxb2 31.Rxc8 Rxc8 32.Qxh5 g6 33.Qe2 Nc4 34.Qd1 Re8 35.Re1 b4 36.f3 Nxg3 37.Nc2 Qa7+ 38.Kh2 Rxe1 54/81 -2.20 19.Nbd4 Re4 20.Nf3 Rd8 21.Nf4 a5 22.Nd3 Nd4 23.Re1 h6 24.Nxd4 Rxd4 25.Rc1 Qa6 26.Rc3 Ne4 27.Ra3 Rc8 28.Qe2 Nf6 29.f3 Re8 30.Qc2 Rxe1+ 31.Nxe1 Rc4 32.Rc3 Qc6 33.Qb3 Rxc3 34.bxc3 Nd7 35.Nd3 f6 36.g4 Nb6 37.Nb2 Kf7 38.Kf2 Qc5+ 54/90 -2.20 19.Nbc1 Rae8 20.b3 R3e7 21.Nf4 Qd8 22.Ncd3 Qd6 23.a5 h6 24.b4 Re4 25.Rb1 Nd4 26.Nc1 Nb5 27.Rb2 Nc3 28.Qf3 Qc6 29.Rc2 Rc4 30.Nfd3 Nce4 31.Rb2 Qb5 32.Qd1 g6 33.Ne2 g5 34.f3 Nc3 35.Nxc3 Rxc3 36.Rd2 Kg7 37.Qb1 d4 38.g4 Re3 54/76 -2.27 19.Ned4 Re4 20.Nxc6 bxc6 21.Nd2 Re6 22.Qb3 c5 23.Qxb6 Rxb6 24.b3 h5 25.Rfc1 Rc8 26.Rc3 Rbb8 27.Re1 Kf8 28.Kf1 g6 29.Re5 Rb6 30.Re1 Rb4 31.Re5 Rbb8 32.Nf3 c4 33.bxc4 dxc4 34.Nd2 Rb2 35.Ke1 Ng4 36.Re4 Nxf2 37.Rexc4 Rxc4 38.Nxc4 Ra2 54/79 -2.61 19.Nd2 Re7 20.Nf3 Qxb2 21.Ned4 Nxd4 22.Nxd4 Re4 23.Nf3 Qc3 24.Qd2 Qxd2 25.Nxd2 Re2 26.Nf3 Rc8 27.Rfb1 Re7 28.Ne1 g6 29.f3 Kg7 30.g4 h6 31.a5 Rc4 32.Kf2 d4 33.Rb2 Nd5 34.Rab1 Rcc7 35.Rd2 Nc3 36.Ra1 Nb5 37.Nd3 Rc3 38.Nf4 Rd7 54/82 -2.72 19.Nc3 Rxg3 20.a5 Qa7 21.Nxd5 Rd8 22.Ne7+ Kf8 23.Nxc6 Rxd1 24.Nxa7 Rxf1+ 25.Rxf1 Rxb3 26.Rb1 Ke8 27.Rc1 Nd5 28.Rc2 Kd7 29.Rd2 Ke6 30.Re2+ Kd6 31.g3 Rb4 32.Rc2 h5 33.Kg2 g6 34.Nc8+ Kd7 35.Na7 Ke6 36.Re2+ Kd6 37.Rc2 Ne7 38.Rd2+ Ke6 53/90 -3.04 19.Nec1 Rxg3 20.a5 Qa7 21.Nd3 Rg4 22.Re1 Rd8 23.Nd2 Qb8 24.Ra4 h5 25.Rxg4 hxg4 26.Nb3 b6 27.axb6 g3 28.Nbc5 gxf2+ 29.Nxf2 Qxb6 30.Qc1 Nb4 31.Na4 Qb8 32.Nc3 a5 33.Qg5 Nc2 34.Re5 Re8 35.Rxe8+ Qxe8 36.Qd2 Ne3 37.Ncd1 Nc4 38.Qf4 Qe1+ <53/82 -4.58 19.fxe3 Qxe3+ 20.Rf2> Ng4 21.Qe1 Qxb3 22.Qc3 Qb6 23.Raf1 Rd8 24.a5 Nxa5 25.Qd4 Qxd4 26.Nxd4 Nxf2 27.Kxf2 Nc4 28.b3 Ne5 29.Ke2 f6 30.Kd2 Kf7 31.Rd1 Rc8 32.Ra1 h6 33.Ra5 Rd8 34.Ra1 Rd7 35.Ra5 Kg6 36.Ra4 Kg5 37.Ne6+ Kf5 38.Nc5 Rc7 |
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| May-24-20 | | Tiggler: <al wazir: The first two moves and the general plan of using the ♘ and ♖ were obvious. The tricky part is after move 32 or so.>
I agree: the first "quiet" move 34..g5 was the one I didn't see. I thought Qh5+ would work, but it doesn't. |
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May-24-20
 | | chrisowen: Just walk out there no? |
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| May-24-20 | | RandomVisitor: After 18.a4 the rook sacrifice and follow-up work, after 18.Rc1 or Nf4 it doesn't
click for larger viewStockfish_20052313_x64_modern:
<60/26 08:47 0.00 18.Rc1 Rxe3 19.fxe3 Qxe3+ 20.Kh1> Qh6+ 21.Kg1 Ng4 22.Rf3 Qh2+ 23.Kf1 Qh1+ 24.Ng1 Re8 25.Qxd5 Nh2+ 26.Kf2 Ne5 27.Rc4 Neg4+ 28.Rxg4 Nxg4+ 29.Kf1 Nh2+ 30.Kf2 |
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May-24-20
| | chrisowen: Chain fetter no? |
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May-24-20
| | scormus: <al wazir> Yes. I'm sure W must have seen that and it's why he played Kh1 instead |
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May-24-20
| | chrisowen: Cuff Jenny's Baubie no. |
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| May-24-20 | | mel gibson: I saw the first move easily.
Stockfish 11 doesn't take the Rook:
18... Rxe3
(18. .. Rxe3
(♖e8xe3 ♘e2-d4 ♖e3-e4 ♘d4xc6 b7xc6 ♘b3-d2 ♖e4-e6 ♕d1-b3 c6-c5 ♕b3xb6
♖e6xb6 b2-b3 ♖a8-c8 ♖a1-c1 ♔g8-f8 ♖c1-c3 ♔f8-e7 ♖f1-d1 ♖b6-c6 ♔g1-f1 h7-h6
♘d2-f3 g7-g5 ♖c3-c2 ♔e7-d6 ♘f3-d2 ♔d6-c7 ♘d2-f3 ♖c8-e8 ♖d1-c1 ♘f6-e4 ♘f3-d4
♖c6-f6 f2-f3 h6-h5 ♘d4-e2 ♔c7-b6 ♖c1-d1) +2.21/37 80) score for Black +2.21 depth 37
But - forcing Stockfish 11 to take the Rook:
19. fxe3 Qxe3+
(19.
.. Qxe3+ (♕b6xe3+ ♖f1-f2 ♘f6-g4 ♕d1-e1 ♕e3xb3 ♖a1-c1 ♘g4xf2 ♕e1xf2 ♕b3xb2
♖c1-f1 ♖a8-f8 ♘e2-f4 ♕b2-b4 ♕f2-c2 ♘c6-e5 ♖f1-d1 ♕b4-b6+ ♕c2-f2 ♕b6-b3
♕f2-d4 ♖f8-d8 ♘f4-h5 f7-f6 ♔g1-h2 a6-a5 ♖d1-d2 ♕b3-b4 ♘h5-f4 ♘e5-c6 ♕d4xb4
♘c6xb4 ♖d2-d1 ♔g8-f7 ♔h2-g1 d5-d4 ♘f4-d3 ♘b4xd3 ♖d1xd3 f6-f5 ♔g1-f2 ♔f7-f6
♖d3-b3 d4-d3) +4.28/34 58)
score for Black +4.28 depth 34 |
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| May-24-20 | | Pedro Fernandez: This is my solution (though I don't know whether black wins) before looking at the actual solution (no machines used): 18...Rxe3
click for larger view19. fxe3 Qxe3+ 20. Kh1 Qh6+ 21. Kg1 Ng4 22. Rf3 Qh2+ (22...Re8; honestly, I saw this possibility, but by lazyness I didn't study it) 23. Kf1 Nce5 24. Rc3 Qh1+ 25. Ng1 Nh2+ 26. Kf2 Neg4+ 27. Ke2 Re8+ 28. Kd2 Qxg2+ 29. Kc1 Ne3 30. Rxe3 Rxe3 31. Kb1 Qf2 32. Ka2 Qxg3 33. Qxd5 h6...etc. |
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Kibitzing
sac: 18...Rxe3
