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Gerd-Peter Gruen vs Daniel King
BL2-W 8788 (1987), GER
Dutch Defense: Stonewall. Modern Variation (A90)  ·  0-1



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Kibitzer's Corner
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Premium Chessgames Member
  agb2002: Black has a bishop and a knight for the bishop pair and a pawn.

White threatens Bxf6.

Black can expose the white king with 30... Rxg2+ 31.Kxg2 Rc2+:

A) 32.Kh1 Qxf3+ 33.Kg1 Qg2#.

B) 32.Kg1 Qxf3 wins (33.Qd8+ Kf7 34.Qf8+ Kg6, etc.).

C) 32.Kh3 Bc8+

C.1) 33.g4 Qxf3+ 34.Kh4 Rxh2+ 35.Kg5 Rh5+ 36.gxh5 Qg3+ 37.Qg4 Qxg4#.

C.2) 33.Kh4 Rxh2+ 34.Kg5 Rh5+ 35.Kf4 Rf5#.

C.3) 33.Qg4 Nxg4 34.fxg4 Qf3 wins.

May-14-21  mel gibson: The first move was easy.

Stockfish 13 says:

Black wins - mate in 14

30... Rxg2+

(30. .. Rxg2+
(♖c2xg2+ ♔g1xg2 ♖c8-c2+ ♕d4-f2 ♖c2xf2+ ♔g2xf2 ♕b3-c2+ ♔f2-e3 ♕c2-c3+ ♔e3-f4 ♘f6-d5+ ♔f4-g5 ♘d5xe7 ♖e1-e6 ♕c3xf3 ♖a1-e1 h7-h6+ ♔g5-h4 g7-g5+ ♔h4-h3 ♗a6-f1+ ♖e1xf1 ♕f3xf1+ ♔h3-g4 ♕f1-f5+ ♔g4-h5 ♕f5-h3+) +M14/65 83)

Premium Chessgames Member
  drollere: white's threat is probably Bxf6 and Qd7. the only approach that looked i useful to me for black was 31. .. Bb7, 32. Re3 Qd5, but i don't see how to progress from there. i looked at 30. .. Rxg2, 31. Kxg2 but didn't see any threat materializing after Rc2+ 32. Kg1. i missed the obvious Qxf3.
Premium Chessgames Member
  An Englishman: Good Evening: Spectacular mating pattern. Black needs all four of his pieces to make it succeed.
May-14-21  Cheapo by the Dozen: Ack. I overrated the importance of the Qd8+ counterattack.
May-14-21  Walter Glattke: A) 30.-Rxg2+ 31.Kxg2 Rc2+ 32.Kh3 Bc8+ 33.g4 Qxf3+ 34.Kh4 Rxh2+ 35.Kg5 Rh5+ 36.gxh5 Qg3+ 37.Qg4 Qxg4# as in C1, A2) 33.Kh4 Rxh2+ 34.Kg5 as in match or C2 B) 32.Kg1 Qxf3 33.Qd8+ Kf7 34.Qf8 Kg6 35.Qxf6+ gxf6 no mate escape C) 32.Qf2 Rxf2+ 33.Kxf2 Bb7 34.Ke2 -+
May-14-21  Brenin: The first few moves are easy, 32 ... Bc8+ less so. The final position is delightful (for Black, anyway)
Premium Chessgames Member
  corneliussulla: 32.Rc4 wins easily also
Premium Chessgames Member
  Dionysius1: Hi <corneliussulla> and welcome to the site
May-14-21  stacase: I would have moved 33...Rc4 probably wins.
May-14-21  Brenin: 30 Be7 was careless; instead, 30 Re3 would have nullified the exchange sacrifice played, since with 32 ... Qxf3 prevented the White K is now safe on h1.
May-14-21  SpiritedReposte: I played ...Qxf3 instead of ...Bc8+ but I think it wins too.
May-14-21  nalinw: SpiritedReposte: I played ...Qxf3 instead of ...Bc8+ but I think it wins too.

Me too - the engine says it is mate in 7 as opposed to mate in 6

May-14-21  Cellist: Great combination. I saw it. Sadly, that means that it is probably a bit easy for a Friday ... I saw the winning 33. ... Rc4, but thought a King hunt might be quicker. Indeed, it is.
Premium Chessgames Member
  chrisowen: Photon beam it is Rxg2+ further keyum arrived it low keyus oldly banjo duo it band job keyim photon beamus great grass knighted keyim quids awe it cafe keyim fuel it jovial it is peas keyim hintly dowry rough again Be7 ha axiomed it is ooh Re3 foggy a cliff muffy totadd accommodate keyim feels it dead heat hussie it was Rxg2+ foggy?
Premium Chessgames Member
  chrisowen: Pool rook need a treat no?
Premium Chessgames Member
  chrisowen: Quite a ok blocker no?
Premium Chessgames Member
  Messiah: Terrible!
May-14-21  Refused: Didn't we have that puzzle a couple of months ago?

30...Rxg2+ 31.Kxg2 Rc2+

a.) 32.Kg1 Qxf3 white will run out of checks and get mated eventually b.)33.Kh3 Bc8+ 34.Kh4 Rxh2 35.Kg5 Rh5+ 36.Kf4 Rf5# is really the only line you have to calculate.

May-14-21  King.Arthur.Brazil: Because of little options, I guess that in this case, being a "difficult" problem, everybody found "30.Rxg2+" which is a beautiful check-mate combination.
May-14-21  King.Arthur.Brazil: I guess that White could save his game, answering 26...♖c2 with 27. ♖d2 ♖fc8 28. ♖ad1. The invasion on the 2nd rank is a very DANGEROUS thing. However, Black has still the strong reply: 27...♘e4 when 28. ♕xe4? ♕xe4 29. fxe4 ♖xd2 ∓. Then White must sacrifice his ♕ with: 28. ♕xf8+ ♕xf8 29. ♖xc2 d3! and Black still have a strong attack; e.g. 31. ♖d1 ♕c5+ 32. ♔h1 ♘f2+ 33. ♔g1 ♘h3+ 34. ♔h1 ♕g1+ 35. ♖xg1 ♘f2#. It seems that White will lose more material and probably the game too, but a little later (lgs).
May-14-21  johnnydeep: A pleasing king hunt!
Premium Chessgames Member
  FSR: 30...Rxg2+ 31.Kxg2 Rc2+

(a) 32.Kh1? Qxf3+ 33.Kg1 Qg2#;

(b) 32.Kg1 Qxf3 leaves White helpless against the threat of Qg2#, since 33.Qd8+ Kf7 34.Qf8+ Kg6 goes nowhere;

(c) 32.Kh3 Qxf3 with a crushing attack, to be continued with ...Bc8+ and ...Rxh2+, or ...Qg2+ and ...Qxh2+.

Premium Chessgames Member
  FSR: Silly me. Of course 32...Bc8+ 33.Kh4 Rxh2+ is more incisive. But as far as I can see, my line also works. No doubt 32...Bc8+ would have dawned on me once I actually had the position on the board.
May-14-21  messachess: Nice problem. Nothing really tricky.
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