Leonid Yudasin vs Michal Krasenkow (1988)

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Leonid Yudasin vs Michal Krasenkow
URS Cup Rapid (1988) (rapid), Tallinn URS, rd 10, May-??
Formation: King's Indian Attack (A07) · 0-1

ANALYSIS [x]

FEN COPIED

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Dec-22-18		Steve.Patzer: I did not expect that move.

Dec-22-18		al wazir: I looked at 26...Qh1 (it deserved attention because it was such an unusual move, if for no other reason). But after 27. Rh2 I didn't see it accomplishing anything.

Dec-22-18		An Englishman: Good Evening: Also rejected 26...Qh1 because of 27.Rh2, but on second thought Black can just play 27...Qxh2; 28.Qxh2,Rxf1 winning material. I think.

Dec-22-18		mel gibson: I saw that but it looked too risky. Stockfish 10 with a 10 Gigabyte hash table says: 26... Qh1 (26. .. Qh1 (♕b7-h1 ♖f2xf7 ♖f8xf7 ♖f1xf7 ♕h1xg1+ ♕d2-g2 ♕g1xg2+ ♔g3xg2 ♔g8xf7 ♔g2-f2 ♘e6-f4 d3-d4 c5xd4 c3xd4 e5xd4 ♘c1-b3 d4-d3 ♔f2-e3 ♘f4xh3 ♔e3xd3 ♘g6-e5+ ♔d3-e3 ♘e5-c4+ ♔e3-d4 ♘c4xb2 ♔d4-c3 ♘b2-d1+ ♔c3-d2 ♘d1-f2 ♔d2-e3 ♘f2-g4+ ♔e3-e4 ♔f7-f6 ♘b3-d4 ♘h3-g5+ ♔e4-f4 ♘g4-e5 ♘d4-b5 ♘g5-e6+ ♔f4-g3 a7-a5 ♘b5-d6 ♔f6-g6 a3-a4 ♘e6-c5 ♔g3-f4 ♘e5-d3+ ♔f4-e3 ♘d3-b2 ♘d6-e4 ♘c5xa4 ♘e4-d6) +7.59/38 103) score for Black +7.59 depth 38

Dec-22-18		mel gibson: I actually thought 26... Ngf4 & Stockfish 10 says that also works: 26. (26. .. Ngf4 27. Kh2 (♔g3-h2) -6.78/35 103) score for White -6.78 depth 35.

Dec-22-18		TeaChess: Ngf4 is my choice. Qh1 is a crazy move.

Dec-22-18		mel gibson: < TeaChess: Ngf4 is my choice. Qh1 is a crazy move.> Yes - it looks like a more sensible line and I'm surprised that it wasn't played.

Dec-22-18		et1: I also choose Ngf4 and the White king looks hopeless,

Dec-22-18		malt: Looked at 26...Ngf4 and 26...Rg7 preferred ...Ngf4.

Dec-22-18		Walter Glattke: Yes, I saw 26.-Ngf4 is black advantage. 27.Kh2 Rf5, allows moves such as Qe7-h4 or Rf8-f6 and more Ng5 - Ngxh3

Dec-22-18		Richard Taylor: I saw Qh1 but thought I could delay it with 26...Ngf4 and then Qh1 next move. But when I put the computer on it Qhi wins with some beautiful variations. So, I cant say I came anywhere really to solving this one. Komodo puts Qh1 as the best move. It refutes Ngf4. If players are using another program they need to let it run to at least a depth of 16 or more. I kept thinking that 26...Qh1 was the move but couldn't see a clear procedure. Krasenkow found it. He is indeed one of the very strongest grandmasters

Dec-22-18		Richard Taylor: I let Komodo run for 21 depth (42 ply) and the lines in order of strength are: 1 -3.14 26...Qh1 with variations (Black wins) 2 -2.63 26. Ngf4 and Black is not refuted as I thought but seems to win also. This was my choice but I wanted to follow it with 27...Qh1 if say 27. Nb3 3. -2.12 26...Rg7 obviously another candidate. One idea I had was to get the Q to h1 and then move both rooks to the g file. But of course the machine plows through all those human ideas and dreams! 3 -1.76 26. ... Nef4 I knew that, the "crazy move" Qh1 was a good candidate. In fact translate "crazy' into "creative" or "imaginative"... Still in the end 26...Ngf4 seemed most logical. It's a complicated position so easy to go wrong.

Dec-22-18		whiteshark: The choice for the second best move is still a good one: click for larger view Black to move 1) -6.24 (32 ply) 26...Qh1 27.Rxf7 Rxf7 28.Rxf7 Qxg1+ 29.Qg2 Qxg2+ 30.Kxg2 Kxf7 31.Kf2 Kf6 32.Kg3 Nef4 33.h4 h5 34.a4 Ne7 35.Kf3 Nf5 36.Ke4 Nd6+ 37.Kf3 Ng6 38.Ke2 Nxh4 39.a5 Ng6 40.axb6 axb6 41.Kf3 Nf4 42.d4 h4 43.Kg4 h3 44.dxe5+ Kxe5 45.Kg3 2) -5.23 (31 ply) 26...Ngf4 27.Kh2 Rg7 28.d4 cxd4 29.cxd4 Rd8 30.b4 Nxd4 31.Qa2+ Kh8 32.Nd3 Nf3+ 33.Rxf3 Rxd3 34.Qf2 Qe4 35.Qb2 Rg2+ 36.Qxg2 Nxg2 37.Rxd3 Qxd3 38.Kxg2 Qxa3 39.Re1 Qa2+ 40.Kg3 Qd5 41.Re3 Qd4 42.Kf2 Qf4+ 43.Ke2 Qxb4 44.Nf3 a5 45.Rxe5 a4 46.Kf2 a3 47.Re8+ Kg7 48.Re2 Qc4 49.Ne5 Qf4+ 50.Kg1 3) -4.09 (31 ply) 26...Rg7 27.Rxf8+ Ngxf8+ 28.Kh2 Nf4 29.Rxf4 exf4 30.Qf2 Ne6 31.Nce2 Qd5 32.d4 cxd4 33.cxd4 Rc7 34.Qg2+ Qxg2+ 35.Kxg2 Rc2 36.d5 Nd4 37.Kf1 Nf5 38.Kf2 Rxb2 39.Kf3 Nd6 40.Kxf4 Ra2 41.Nd4 Rxa3 42.Ke5 Nf7+ 43.Ke6 Re3+ 44.Kd7 a5 45.Kc6 a4 46.Ngf3 a3 47.Kxb6 6.0 minute analysis by Stockfish 9 v010218

Dec-22-18		saturn2: I went for 26...Ngf4 clearing the g file for a rook check.

Dec-22-18		Articalplayer: Funny enough, I considered the Black Queen hitching up in the corner of White's territory but could not see how this would cause any havoc. That is why I dismissed the move and expected something from the Rooks.

Dec-22-18		thegoodanarchist: At first glance, it looks like White could trade down to a R+N against R+R endgame. Alekhine faced Lasker, IIRC, in such an endgame, down the exchange. He also played the same endgame where he had the two rooks. So I guess that's why Yudasin resigned - the road to victory was already known in 1988.

Dec-22-18		sp12: How about: 26...Qh1 27. Rxf7 Rxf7 28. Qg2?

Dec-22-18		cormier: click for larger view Analysis by Houdini 4 d 24 dpa done <1. - / + (-1.32): 19...Bxg2> 20.f6+ Rxf6 21.Rxf6 Bxf1 22.Rxf8 Kxf8 23.Kxf1 Qh3+ 24.Qg2 Qxg2+ 25.Kxg2 Nxc2 26.Kf3 Kf7 27.Nb3 Ke6 28.Nb5 a5 29.Nd2 Nd5 30.b3 Nd4+ 31.Nxd4+ exd4 32.Nc4 h6 33.h4 Kf6 34.Kg4 h5+ 35.Kf3 g5 36.hxg5+ Kxg5 37.Nd6 Nc3 38.Nf7+ Kf5 39.Nd6+ Ke6 40.Nc4 a4 41.bxa4 Nxa4 2. = / + (-0.34): 19...Rxf5 20.Ne4 Rxf2 21.Rxf2 Rxf2 22.Qxf2 Bxe4 23.dxe4 Ng8 24.c3 Nb5 25.Qe2 Nd6 26.Nd3 Qe6 27.Bf3 Nf6 28.Kg2 h5 29.h3 a6 30.g4 hxg4 31.Bxg4 Nxg4 32.Qxg4 Qxg4+ 33.hxg4 Kf6 34.Kf3 Nc4 35.Ke2 Kg5

Dec-22-18		Richard Taylor: <sp12> Did you mean this line? Black wins a piece and the game. I actually miscalculated this the second time and thus rejected 26...Qh1 which I kept trying to make work. I "knew" that it was the move but I couldn't see how exactly. It was going to be the move as it is an unusual place for the Black Queen and also it cuts the K off as well as puts pressure on h3. It is also logical as long as one can calculate the details...which I couldn't be bothered with. Too time consuming. 26...Qh1 27. Rxf7 Rxf7 28. Rxf7 Qxg1+ 29. Qg2 Qxg2+ 30. Kxg2 Kxf7

Dec-22-18		1stboard: What happens if white plays 27 Nf3 instead of the text move , looks like it holds ( ? ) ...

Dec-22-18		Boomie: <1stboard: What happens if white plays 27 Nf3 instead of the text move , looks like it holds ( ? ) ...> After 27...Rxf3+ 28. Rxf3 Rxf3+ 29. Rxf3 Qg1+ 30. Qg2 Qxc1, the knights will dominate. click for larger view

Dec-22-18		agb2002: The natural move seems to be 26... Ngf4, threatening Rg7+ and mate soon and stopping the simplification of the position: A) 27.Rf3 Rg7+ 28.Kf(h)2 (28.Kh4 Qe7#) 28... Rg2+ wins decisive material (28.Kh2 Rg2+ 29.Qxg2 Nxg2 30.Rxf8+ Nxf8 - + [q vs R+N]). B) 27.Rh2 Rg7+ 28.Kf2 Nxh3+ wins decisive material. C) 27.Nf3 Nh5+ C.1) 28.Kg2 Rg7+ 29.Kh2 (29.Kh1 Ng3+ wins decisive material) 29... Ng3 seems to win a exchange (30.Re1 Rxf3). C.2) 28.Kh2 Rxf3 wins a knight. C.3) 28.Kh4 Rxf3 29.Rxf3 (29.Kxh5 Qf7+ and mate soon) 29... Rxf3 30.Rxf3 Qxf3 wins a knight. D) 27.Kh2 Kh8 with the idea Rg7, Rfg8 and Black looks better.

Dec-22-18		Boomie: <agb2002: The natural move seems to be 26... Ngf4> I would prefer 26...Nef4. The g-knight masks the g-file and sometimes comes to h4 with effect. The knight on e6 isn't doing anything interesting.

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