| May-09-20 | | Delboy: A well-played and instructive attack starting with a positional pawn sacrifice (15. ... d3), followed by a positional exchange sacrifice (17. ... Rxe3) to weaken the black squares around the opposing king, and finished with a decisive knight sacrifice (23. ... Nxh2) |
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| Nov-04-21 | | Brenin: 23 ... Nxh2 24 Kxh2 Bf2 puts a couple of mines under the foundations of White's castle, with an invasion by Qxg3+ or Rd6-h6 to follow. |
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| Nov-04-21 | | Brenin: White's opening seems very aimless, taking four moves to place his N on f4, where it blocks the development of his DSB, so that he has to waste another tempo with b3. By that time, Black has developed a powerful attack. Even so, 23 Rf1, aiming to force a Q exchange with 24 Qf5, might have saved White, e.g. 23 ... Nf2+ 24 Kg1 looks harmless, or 23 ... Qh5 24 h3 Nf2+ Kh2. |
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Nov-04-21
 | | corneliussulla: A shame 23.Bf3 loses 23.Rf1 draws |
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| Nov-04-21 | | mel gibson: I was wrong -
I guessed it was 23... Nf2+
That is a draw according to Stockfish 14.
Stockfish 14 says:
23... Nxh2
(23. .. Nxh2 (♘g4xh2
♔h1xh2 ♗b6-f2 ♖e1-g1 ♖d8-d6 ♕b1-f1 ♖d6-h6+ ♕f1-h3 ♖h6xh3+ ♔h2xh3 b7-b5
b3-b4 g7-g6 ♖a1-d1 ♗f2xg1 ♖d1xg1 ♕g5-d2 a2-a3 ♕d2-c3 ♖g1-d1 ♕c3xa3 ♖d1-d4
♕a3-a1 ♖d4-e4 ♕a1-f1+ ♔h3-h2 ♔g8-g7 ♖e4-e5 ♕f1-f2+ ♔h2-h3 a7-a6 ♖e5-e8
♕f2-e1 ♖e8-e4 a6-a5 b4xa5 ♕e1xa5 ♖e4-e7 b5-b4 ♖e7-b7 ♕a5-c5 ♔h3-g2 ♕c5-c4
♔g2-f2 b4-b3 ♗f3-e4 b3-b2 ♖b7xb2 ♕c4-d4+ ♔f2-f3) +5.41/40 200) Score for Black +5.41 depth 40. |
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| Nov-04-21 | | Brenin: <mel gibson>: 23 ...Nf2+ 24 Kg2 Qh6 25 h4 Qe6 (threatening 26 ... Qh3+ 27 Kg1 Qh1 mate) 26 Rh1 (26 g4 Nxg4 looks hopeless for White) Nxh1 27 Qxh1 certainly looks evenly balanced. |
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| Nov-04-21 | | mel gibson: < Brenin: <mel gibson>: 23 ...Nf2+ 24 Kg2 Qh6 25 h4 Qe6 (threatening 26 ... Qh3+ 27 Kg1 Qh1 mate) 26 Rh1 (26 g4 Nxg4 looks hopeless for White) Nxh1 27 Qxh1 certainly looks evenly balanced.> Stockfish 14 has a different line for 23...Nf2+. (23. .. Nf2+
24. Kg2
(♔h1-g2 ♕g5-h6 h2-h4 ♕h6-e6 ♖e1-h1 ♘f2xh1 ♕b1xh1 ♕e6-e3 ♕h1-c1 ♕e3-e5
♖a1-b1 ♗b6-c7 ♕c1-g5 ♕e5xg5 h4xg5 b7-b5 a2-a4 ♗c7-b6 a4xb5 ♖d8-e8 ♖b1-d1
g7-g6 ♔g2-h3 ♔g8-f8 ♖d1-d5 ♖e8-e3 ♖d5-d7 ♖e3-e7 ♖d7xe7 ♔f8xe7 ♗f3-d5 ♗b6-e3
♔h3-h4 ♔e7-f8 ♗d5-c4 ♔f8-g7 ♔h4-g4 ♔g7-g8 ♔g4-h4 ♔g8-f8 ♗c4-d5 ♔f8-g7
♗d5-c4 f7-f6 g5xf6+ ♔g7xf6 ♗c4-d5 h7-h6 ♗d5-c4 ♗e3-b6) -0.07/45 149) score for Black -0.07 depth 45 - so - close to a draw. |
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| Nov-04-21 | | Refused: White is up on the material side of things, but his king's position is relatively airy.
Two candidates.
23...Nf2+ and 23...Nxh2
I fail to see Nf2+ going anywhere. Nxh2 on the other hand, has Bf2 as a follow up, and and when g3 falls, everything falls. So let's go with the one with the straight forward line first, and keep Nf2+ as a back up. 23...Nxh2! 24.Kxh2 Bf2 25.Rg1 Rd6! and this is curtains. White has no good defense against 26...Rh6+ the only move I see prolonging the suffering is 26.Qf1 Rh6+ 27.Qh3 Bxg1+ 28.Rxg1 Rxh3+ 29.Kxh3 but now the material balance has shifted in black's favour. |
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Nov-04-21
 | | chrisowen: Uvray joffi evict Nxh2 give its ace its me a hood road uvray joffis evict jasmine toggle raised its demarcate marlborough lunch wink quicker its gupta its uvray joffi its roys evict v demolish its bail tax its z choose wink puzzle evict vehement creed its hub bunch evict borough its shrub choo choo etcetera vehicle fluff dank abattoir auld demolish evict cred kits cc haggled hanging fell dob taker i v sh evict aka mend bic see made its an oo mid refs choosed its i i captain evict fox it adolf evict by jim speed o it ta knight v pow its over nerd v git dean cuddle v indeed it is fame it cad u dads evict army its gold feed its o dud c vasts evict fish fane condiment van de graaf to general arno its uzi no hi v spice of life mend its gold and sos v i possums um thine bets noir v go ok north its auld crew its fix Nxh2 doh; |
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| Nov-04-21 | | agb2002: Black has a knight for a rook.
The first idea that comes to mind is 23... Nf2+ 24.Kg2 Qh6 but after 25.h4 Qe6 26.e3 Rd2 27.Re2 Bxe3 28.g4 (28.Rxd2 Qh3+ and mate in two) the attack seems to start vanishing. An alternative is 23... Nxh2:
A) 24.Kxh2 Bf2 25.Rg1 (25.g4 Qh4+ 26.Kg2 Qg3+ and mate next) 25... Rd6 26.Qe4 Rh6+ 27.Qh4 (27.Kg2 Qxg3+ 28.Kf1 Qxg1#) 27... Rxh4+ 28.gxh4 Qxh4+ 29.Kg2 Qg3+ and mate next. B) 24.Kg2 Nxf3
B.1) 25.exf3 Rd2+ and mate soon.
B.2) 25.Kxf3 Qe3+ 26.Kg4 (26.Kg2 Qf2+ 27.Kh3 Rd6 is winning) 26... Rd6, with the threat Rg6+, is winning. B.3) 25.Rh1 h6, must be winning (26.Kxf3 Qxe3+ followed by Qxe2+ and Rd4+ or Qh5+ and mate soon). C) 24.Qd4 Qxg3 with a large compensation for the exchange. D) 24.Rd1 Rxd1+ 25.Qxd1 Nxf3 looks promising. For example, 26.exf3 Qxg3 27.Qe2 Qh3+ 28.Qh2 Qxf3+ 29.Qg2 Qh5+ 30.Qh2 Qd5+ 31.Qg2 Qd7 followed by a pawn roll on the king side after due preparation. |
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| Nov-04-21 | | landshark: Wow.
I'm 4/4 this week so far.
Maybe I'll actually work on the late-week puzzles - they are usually so baffling that I just pass onto other things -
Not that I tracked down the lines where W declines the N sac <like age did>, because the position for W just looks dismal to me after that. |
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| Nov-04-21 | | landshark: I meant agb2002. One of my favorite kibitzers. |
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| Nov-05-21 | | saturn2: 23... Nxh2 24 Kxh2 Bc7 (instead of Bf2) does not work because black does not have a mate later at g1 24...Bc7 25. Rg1 Rd6 26. Qe4 Rh6+ 27. Kg2 Qxg3+ 28. Kf1
I the bishop were on f2 black had 28...Qg1++ |
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May-12-24
 | | GrahamClayton: An example where exchanging pieces (22. Ng4) doesn't lessen the opponents attack. |
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Kibitzing
Annotations by 
sac: 17...Rxe3
