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Old 2017-03-30, 05:37   #1
MooMoo2
 
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Default Engine-assisted game vs Stockfish, move 32 discussion

The most popular move on the move 31 poll was ...Rd2. Stockfish played 32. Bd5, and the FEN is:
5r1k/7p/3pQ3/2qB1p2/3bpP2/1P6/3r2PP/2R2R1K b - - 8 32

Game so far: 1.e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Bxf6 gxf6 11. Nd5 f5 12. c3 Bg7 13. Bd3 Be6 14. Nc2 O-O 15. O-O fxe4 16. Bxe4 Rc8 17. a4 f5 18. axb5 axb5 19. Bf3 e4 20. Be2 Kh8 21. Qd2 Be5 22. f4 Bxd5 23. Qxd5 Qb6+ 24. Kh1 Bg7 25. Rad1 b4 26. Nxb4 Nxb4 27. cxb4 Qxb4 28. b3 Rc2 29. Bc4 Qc5 30. Qe6 Bd4 31. Rc1 Rd2 32. Bd5

Depth: 60 ply. Nodes searched: 815,743,220,395 (~816 G)
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Old 2017-03-30, 06:55   #2
gd_barnes
 
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32...Bc3 or Qb5
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Old 2017-03-30, 11:52   #3
WMHalsdorf
 
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I would go with Qb5 as Bc3 leads to a draw by perpetual check in a few moves.
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Old 2017-03-31, 02:30   #4
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In the Move 31 thread, dh1's analyses using Houdini and Deep Rybka showed:

32.Bd5 Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 ......
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Old 2017-03-31, 04:56   #5
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Quote:
Originally Posted by WMHalsdorf View Post
I would go with Qb5 as Bc3 leads to a draw by perpetual check in a few moves.
We want to force a draw at this point to get on to something better. There is no reasonable way to win.
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Old 2017-03-31, 14:40   #6
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Quote:
Originally Posted by richs View Post
In the Move 31 thread, dh1's analyses using Houdini and Deep Rybka showed:

32.Bd5 Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 ......
34...Qa5
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Old 2017-04-01, 16:09   #7
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FEN is: 5r1k/7p/3pQ3/2qB1p2/3bpP2/1P6/3r2PP/2R2R1K b - - 8 32

(more-negative is worse for black)
Code:
Komodo-10.4-64bit:
 42    -0.98    32. ... Rc2 33.Rxc2 Qxc2 34.Bc4 Bg7 35.Qxd6 Rf6 36.Qc5 Rf8 37.g3 Qd2 38.Qb5 Qc2 39.Qb6 Qc3 40.Kg2 Qd2+ 41.Rf2 Qd1 42.Qb5 Qd4 43.Qc6 Rf6 44.Qc8+ Rf8 45.Qe6 Qd8 46.Ra2 Bc3 47.Qh6 Bg7 48.Qc6 Qd1 49.Rf2 Qd4 50.Qd5 Qxd5 51.Bxd5 Bd4 52.Rc2 Kg7 53.b4 Rf6 54.Rc7+ Kg6 55.Rd7 Bb6 56.b5 Bc5
 42    -0.65    32. ... Rf2 33.Rg1 Rc2 34.Rxc2 Qxc2 35.Bc4 Qf2 36.Rf1 Qh4 37.Qxd6 Qf6 38.Qb4 Rd8 39.Rd1 h5 40.Qb5 Bb6 41.Rxd8+ Bxd8 42.g3 Kg7 43.Kg2 h4 44.Be2 Kg6 45.Qe8+ Kg7 46.Qd7+ Kg6 47.b4 Qb2 48.Qe8+ Kg7 49.Qb5 hxg3 50.hxg3 Kg6 51.g4 fxg4 52.Kg3 Qf6 53.Qe8+ Kg7 54.Qd7+ Kh6 55.Qxg4 Qg6 56.Qxg6+ Kxg6 57.Kg4 Bb6 58.Bd1 Kf6 59.Bc2 e3 60.Kf3
 42     0.00    32. ... Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 Rd2 36.g3 Rb8 37.Bc4 Rbd8 38.Be6 Bb2 39.Rb1 e3 40.Bxf5 Bc3 41.Rfe1 Rf2 42.Rxe3 Rdd2 43.Rxc3 Rxh2+ 44.Kg1 Rhg2+ 45.Kh1 Rh2+
 42     0.00    32. ... Bc3 33.Qe7 Rc8 34.Be6 Qc7 35.Qg5 Rf8 36.Bxf5 Rd5 37.Qg3 Rdxf5 38.Rxc3 Qf7 39.Rc6 Rxf4 40.Qc3+ Kg8 41.Qg3+ Kh8

========================================
Houdini 5:
 51/109    -1.37    32. ... Rc2 33.Rxc2 Qxc2 34.Bc4 Bg7 35.Qxd6 Qc3 36.g3 Rc8 37.Qd7 Rf8 38.Qe6 h6 39.Qg6 Qf6 40.Qh5 Kh7 41.Rd1 Qg6 42.Qe2 Ra8 43.Rd7 Qg4 44.Qxg4 fxg4 45.b4 Ra4 46.Rb7 Kh8 47.Rb8+ Kh7 48.Be6 Bc3 49.Bxg4 Rxb4 50.Bf5+ Kg7 51.Rxb4 Bxb4 52.Bxe4 Kf6 53.Kg2 h5 54.Kf3 Bc5 55.Bd3 Bd4 56.Be2 Kg6 57.Bb5 Bc5 58.Be8+ Kh6 59.Bc6 Kg6 60.Ke4 Bg1 61.Be8+ Kh6
 51/109    -0.93    32. ... Rf2 33.Rg1 Rc2 34.Rxc2 Qxc2 35.Bc4 Qf2 36.Rf1 Qh4 37.Qxd6 Qf6 38.Qb4 Rd8 39.Rd1 h5 40.g3 Kg7 41.Qb5 h4 42.Kg2 Bb6 43.Rd7+ Rxd7 44.Qxd7+ Kh6 45.b4 hxg3 46.hxg3 Qb2+ 47.Kh3 Qf6 48.Be2 Bf2 49.Qe8 Kg7 50.Kg2 Bb6 51.Bc4 Kh6 52.Be6 Qb2+ 53.Kh3 Qf6 54.b5 Bd8 55.Qg8 Ba5 56.Qc8 Kg6 57.Qe8+ Kh6 58.Bc4 Bb6 59.Qc8 Bd8 60.Be2 Kg6 61.Qa6 Bb6
 51/109     0.00    32. ... Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 Rd2 36.Rfd1 e3 37.Re1 Rb8 38.Be2 Bb2 39.Rb1 Rxb3 40.g3 Kg7 41.Kg2 Rc3 42.Kf3 h5 43.Red1 Kg6 44.h3 Rcc2 45.Bd3 Rc3 46.Rxd2 exd2 47.Ke2 Bc1 48.Rb6+ Kf7 49.Rb3 Rxb3 50.Bc4+ Kg6 51.Bxb3 h4 52.gxh4 Kh5 53.Kd1 Kxh4 54.Bc2 Kg3 55.Bxf5 Kxf4
 51/109     0.00    32. ... Bc3 33.Qe7 Rc8 34.Be6 Qc7 35.Qg5 Rf8 36.Bxf5 e3 37.Be4 d5 38.Bxd5 e2 39.Rfe1 Rxd5 40.Qxd5 Qxf4 41.Qf3 Bxe1 42.Rxe1 Qxf3 43.gxf3 Rxf3 44.Rxe2 Rxb3

========================================
EngineDeepShredder13UCIx64:
 51/87    -0.75    32. ... Rc2 33.Rxc2 Qxc2 34.Bc4 Bg7 35.Qxd6 Qb2 36.g3 Qf6 37.Qxf6 Rxf6 38.Rd1 h5 39.b4 Kh7 40.b5 Rb6 41.Kg2 Kg6 42.Rd7 Bc3 43.Kf1 Ba5 44.Ke2 Bb4 45.h4 Rb8 46.Rc7 Ba5 47.Ra7 Bb6 48.Re7 Ba5 49.Re6+ Kg7 50.Ra6 Bb4 51.Rc6 Ba5 52.Rc5 Kf6 53.Kf1 Rb7 54.Rc6+ Kg7 55.Ra6 Bd8 56.Be2 Be7 57.Re6 Bd8 58.Kg2 Ba5 59.Rc6 Rb8
 51/87    -0.38    32. ... Rf2 33.Rg1 Rc2 34.Rxc2 Qxc2 35.Bc4 Qf2 36.Rf1 Qh4 37.Qxd6 Qf6 38.Qb4 Rd8 39.Rd1 h5 40.Qb5 h4 41.g3 hxg3 42.hxg3 Bb6 43.Rxd8+ Bxd8 44.Kg2 Kg7 45.Be2 Kh8 46.Qe8+ Kg7 47.Qd7+ Kh6 48.Qd2 Be7 49.b4 Bf8 50.b5 Bc5 51.Kh3 Qa1 52.Bd1 Qd4 53.Qe2 Kg7 54.Qh5 Qf6 55.Qe8 Bb6 56.Bh5 Bf2 57.Qd7+ Kh6 58.Bd1 Bb6 59.Be2 Bf2 60.Qe8 Bb6 61.g4 fxg4+ 62.Kg3 Bd8 63.Kxg4 Qg6+ 64.Qxg6+ Kxg6 65.Bc4 Bb6 66.Bd5
 51/87     0.00    32. ... Bc3 33.Qe7 Rc8 34.Be6 Qc7 35.Qh4 Rf8 36.Qh3 Rd3 37.Qh5 Qg7 38.Bxf5 Rd5 39.Qxh7+ Qxh7 40.Bxh7 Kxh7 41.Rxc3 Rxf4 42.Kg1 Rxf1+ 43.Kxf1 Rd2 44.Re3 d5 45.Re2 Rd4 46.h4 Rb4 47.Re3 Kg6 48.g4 Rb8 49.Ke2 Kf6 50.Rc3 Ke5 51.h5 Kf4 52.Rc5 d4 53.Rf5+ Kxg4 54.Rd5 d3+ 55.Ke3 Rxb3 56.Kxe4
 51/87     0.00    32. ... Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 Rd2 36.g3 Rb8 37.Rc5 e3 38.Re1 Bd4 39.Rxf5 Rf2 40.Rd5 Rxb5 41.Rxd4 Rxb3 42.Rd8+ Kg7 43.Rd7+ Kg6 44.Kg1 Rbb2 45.Rxe3 Rg2+ 46.Kh1 Rxh2+ 47.Kg1 Rhg2+ 48.Kf1 Rgf2+ 49.Kg1 Rg2+

========================================
Deep Rybka 4.1 SSE42 x64:
 30    -0.99    32. ... Rc2 33.Rxc2 Qxc2 34.Bc4 Bg7 35.Qxd6 h6 36.g3 Kh7 37.Qc6 Qa2 38.b4 Qb2 39.b5 h5 40.Rg1 Qf2 41.h4 Rf6 42.Qd7 Kh6 43.Rg2
 30    -0.66    32. ... Rf2 33.Rg1 Rc2 34.Rxc2 Qxc2 35.Bc4 Qf2 36.Rf1 Qh4 37.Qxd6 Qf6 38.Qb4 Rd8 39.Rd1 h5 40.g3 h4 41.Kg2 Bb6 42.Rxd8+ Bxd8 43.Qd2 Kg7 44.b4 Kf8 45.Be2 hxg3 46.hxg3 Ke7 47.Qd5 Qb2
 30    -0.14    32. ... Bc3 33.Qe7 Rc8 34.Be6 Qc7 35.Qh4 Rf8 36.Qh3 Rd3 37.Qh5 d5 38.Rc2 Qg7 39.Bxf5 Qf7 40.Qxf7 Rxf7 41.g4 Rf8 42.Rfc1 Bg7 43.Rc5 h5 44.Be6 hxg4 45.Rxd5 Rxd5 46.Bxd5 e3 47.Re1 Bd4
 30     0.00    32. ... Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 Rd2 36.Rfd1 e3 37.Rxd2 exd2 38.Rd1 Bc3 39.g3 Kg7 40.Kg2 Rb8 41.Bc4 Kf6 42.Kf3 Re8 43.h3 h5 44.Bb5 Rb8 45.Ba4 Rb7 46.h4 Rb8 47.Ke3 Rg8

========================================
Fire 5 x64 popcnt:
 44    -0.77    32. ... Rc2 33.Rxc2 Qxc2 34.Bc4 Bg7 35.Qxd6 Qb2 36.g3 Qc3 37.Qc6 Qa5 38.Be2 Qa8 39.Qb5 Qe8 40.Qc4 Qc8 41.Rd1 Qxc4 42.bxc4 Bf6 43.c5 Rc8 44.Rd5 Be7 45.Re5 Bxc5 46.Rxf5 Be3 47.Re5 Rc2 48.Bh5 Rc1+ 49.Kg2 Rc2+ 50.Kh3 Bg1 51.Rxe4 Rxh2+ 52.Kg4 Bc5 53.Be8 Kg7 54.Rc4 Bb6 55.Rb4 Bg1 56.Rb1 Bd4 57.Rd1 Bb6 58.Rd5 Kf8 59.Bb5 h5+ 60.Rxh5 Rxh5 61.Kxh5 Be3 62.Ba6 Ke7 63.f5 Bf2
 44    -0.57    32. ... Rf2 33.Rg1 Rc2 34.Rxc2 Qxc2 35.Bc4 Qf2 36.Rf1 Qh4 37.Qxd6 Qf6 38.Qb4 h5 39.g3 h4 40.g4 fxg4 41.Qb7 Qf5 42.Qe7 Bc5 43.Qxh4+ Kg7 44.Be2 Rh8 45.Bxg4 Rxh4 46.Bxf5 Be3 47.Kg2 Bxf4 48.h3 Bg5 49.Kg3 e3 50.Bg4 Rh8 51.b4 Bh4+ 52.Kf3 Rf8+ 53.Ke2 Rxf1 54.Kxf1 Be7 55.b5 Bc5 56.h4 Kf6 57.Ke2 Ke5 58.Kf3 Kf6 59.Kg3 Kg7 60.Kg2 Kf7 61.Bh5+ Kf6 62.Kf3 Kf5 63.Ke2
 44     0.00    32. ... Qb5 33.Qxd6 Bg7 34.Bc4 Rxd6 35.Bxb5 Rd2 36.Rc5 e3 37.Rc6 Rb8 38.Re6 Rxb5 39.Re8+ Bf8 40.Rxf8+ Kg7 41.Re8 Rxb3 42.h3 Rf2 43.Re1 Rbb2 44.R1xe3 Rxg2 45.R3e7+ Kh6 46.Rf7 Rh2+ 47.Kg1 Rhg2+ 48.Kh1
 44     0.00    32. ... Bc3 33.Qe7 Rc8 34.Be6 Qc7 35.Qh4 Rf8 36.Qh3 Rd3 37.Qh5 Qg7 38.Bxf5 Rd5 39.Qxh7+ Qxh7 40.Bxh7 Kxh7 41.Rxc3 Rxf4 42.Rc7+ Kg6 43.Kg1 Rxf1+ 44.Kxf1 Rd2 45.b4 Kf5 46.h4 Kg4 47.b5 d5 48.b6 Rb2 49.b7 d4 50.Rc4 Rxb7 51.Rxd4 Kxh4 52.Rxe4+
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Old 2017-04-03, 03:11   #8
gd_barnes
 
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I like 32...Bc3 forcing a quicker draw.
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