Vinvin wrote: ↑Thu Aug 15, 2019 2:44 pm
acase wrote: ↑Thu Aug 15, 2019 2:04 am
Vinvin wrote: ↑Wed Aug 14, 2019 10:59 pm
Is there some conclusion for this position now ?
Eval from Stockfish_190726 (3 best moves) after Bg4!? with a bit of learning.
[d]r3r1k1/pp1q1p2/2p2npb/PPPp2np/3PpNb1/2N1P1PP/1R1B1PBK/3Q1R2 w - - 1 20
Code: Select all
Stockfish_19072603_x64_modern:
...
34/48 01:35 834 126 572 8 764 135 -1,81 20.Qc1 Nf3+ 21.Bxf3 exf3 22.hxg4 Bxf4 23.exf4 Nxg4+ 24.Kg1 Ne5 25.f5 Nd3 26.Qb1 Qxf5 27.Kh2 Nxb2 28.Qxb2 h4 29.Qc1 Qg4 30.Bg5 hxg3+ 31.fxg3 f6 32.Bxf6 Kf7 33.Qf4 Qxf4 34.gxf4 Re3 35.Nxd5 cxd5 36.Be5 Rb3 37.Kg3 Rxb5 38.Kxf3 Rxa5 39.Rh1 Ke6 40.Rh7 Rb5 41.Rg7 Rb3+ 42.Kg4
34/51 01:35 834 126 572 8 764 135 -1,33 20.hxg4 hxg4 21.Rh1 Nf3+ 22.Bxf3 gxf3 23.Nh3 Kg7 24.Qf1 Rh8 25.Kg1 g5 26.Ra2 g4 27.a6 gxh3 28.Qxh3 Qxh3 29.Rxh3 Bxe3 30.Rh4 Bxd2 31.Rxd2 Rhb8 32.axb7 Rxb7 33.bxc6 Rc7 34.Ra2 a5 35.Kf1 Rxc6 36.Ke1 Kg6 37.Na4 Re6 38.Nb6 Rae8 39.Rxa5 e3 40.Ra7 exf2+ 41.Kxf2
35/54 01:35 834 126 572 8 764 135 -0,85 20.Qb1 Nf3+ 21.Bxf3 Bxf3 22.Ng2 a6 23.bxc6 bxc6 24.Rb7 Qe6 25.Ne1 Ng4+ 26.hxg4 hxg4 27.Rh1 Kg7 28.Kg1 Bxh1 29.Kxh1 Bg5 30.Kg1 Rh8 31.Nd1 Qf5 32.Bc3 Rh3 33.Rb8 Rxb8 34.Qxb8 Bf6 35.Kf1 Qh5 36.Ke2 Rh1 37.Qb7 Qh3 38.Kd2 Qf1 39.Kc1 Qc4
Hello Vincent,
All 3 moves suggested by Stockfish still lose for white. If you want to go over the moves with me I am willing to do it.
Hello,
Yes, please give me some best lines already analyzed.
Is there a better move than these 3 (20.Qc1 ; 20.hxg4 ; 20.Qb1 ) ?
I'll make a Study on Lichess with the best lines :
https://lichess.org/study/PeXgBH5M
Ok, lets start with the best move out of the 3 which is 20.Qb1, here is what I have so far:
[pgn][Event "Computer chess game"]
[Site "WORKSTATION-PC"]
[Date "2019.08.14"]
[Round "?"]
[White "Workstation"]
[Black "Workstation"]
[Result "*"]
[BlackElo "2400"]
[Time "19:25:29"]
[WhiteElo "2400"]
[TimeControl "1800+5"]
[SetUp "1"]
[FEN "r3r1k1/pp1q1p2/2p2npb/PPPp2np/3PpNb1/2N1P1PP/1R1B1PBK/3Q1R2 w - - 1 20"]
[Termination "unterminated"]
[PlyCount "12"]
[WhiteType "human"]
[BlackType "human"]
20. Qb1 Nf3+ 21. Bxf3 Bxf3 22. Ng2 {This move is probably worse than 22.a6, but I'll use it as the main line since 22.Ng2 is what is used in Stockfish's line, but let's do analysis on 22.a6 also}
(22. a6 Ng4+ 23. Kg1 Bxf4 {23...Ne5 and 23...Nf6 also work here.} 24. exf4
Nh6 {Threatining mate in 2 beginning with 25...Qxh3} 25. Kh2 bxa6 26. bxc6
Qxc6 27. Qa2 Ng4+ 28. Kg1 Nf6 29. Kh2 Qd7 30. Qxa6 Qf5 31. Qa2 a5! {And
here Stockfish gives:
44/79 24:48 40,980,569k 27,535k -3.72 32.Bd2-c1
a5-a4 33.Rb2-b1 Re8-d8 34.h3-h4 a4-a3 35.Bc1-e3 Nf6-g4+ 36.Kh2-g1 Kg8-g7
37.Rb1-b6 Ng4xe3 38.f2xe3 Qf5-h3 39.Qa2-h2 Qh3xh2+ 40.Kg1xh2 a3-a2
41.Rf1-a1 Ra8-a3 42.Nc3xa2 Rd8-a8 43.Rb6-b2 Ra3xe3 44.f4-f5 Re3-d3 45.f5xg6
Rd3xd4 46.Ra1-f1 Kg7xg6 47.Na2-c3 Ra8-d8 48.Nc3-e2 Rd4-c4 49.Ne2-f4+ Kg6-g7
50.Rb2-f2 d5-d4 51.Nf4-d3 f7-f6 52.Rf2xf3 e4xf3 53.Rf1xf3 Rc4-c3 54.Kh2-g2
Rd8-b8 55.Nd3-f4 Kg7-h6 56.c5-c6 Rb8-b2+ 57.Rf3-f2 Rb2xf2+ 58.Kg2xf2 Rc3xc6
59.Kf2-e1 Rc6-c3 60.Nf4-e2 Rc3-d3 61.Ke1-f2 Rd3-d1 62.Ne2-f4 Rd1-a1
63.Kf2-e2 Ra1-a3 64.Ke2-f2 f6-f5}) 22. .. h4! {and not 22...a6? as suggested in Stockfish's line} 23. a6 Ng4+! 24. hxg4 Kg7!
25. axb7 Qxg4!! {ignoring white's insignificant counterplay, and Stockfish
finally sees that the position is hopeless.}[/pgn]