Questionable test positions?

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JVMerlino
Posts: 1352
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Questionable test positions?

Post by JVMerlino »

I have some test positions that I've gathered over the years and have finally decided to cull out useless ones that either Myrddin gets right away now or are questionable in their best move.

I have three left that I need some help from the community to determine if they are worthy. Any input is greatly appreciated.

[D]r3k1r1/1b3p1p/p2bpp2/2p5/P2p3P/3Q1P1R/1PPP2P1/R1BqNK2 b q -
I have "bm Rxg2, Rg3" but it seems that some other moves (such as e5) may be better with enough analysis. Obviously, the attraction was the intriguing Rxg2 sac. :)

[D]6k1/r4pp1/2p1p2p/qp5P/r2P4/2Q1RPP1/PP6/1K2R3 b - - 0
I have b4 as best, but some engines show Qd8?

[D]6k1/6pp/pp6/2p1Qp1q/2Pp1P2/1P1P2P1/P4P2/6K1 b - -
I have Qd1 and draw as best, but some engines say g6 and h6 also lead to draw?

Many thanks in advance,
jm
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mar
Posts: 2552
Joined: Fri Nov 26, 2010 2:00 pm
Location: Czech Republic
Full name: Martin Sedlak

Re: Questionable test positions?

Post by mar »

Have you tried an engine with multipv John?
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JVMerlino
Posts: 1352
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Re: Questionable test positions?

Post by JVMerlino »

Just two, but they're both free engines and more than a bit outdated. Hoping that somebody with one or more of the top commercials will weigh in. :)

jm
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Mdannib
Posts: 75
Joined: Tue Jul 13, 2010 12:06 am

Re: Questionable test positions?

Post by Mdannib »

This is the analysis done with Houdini for the first position -/+ (-1.31) 1...Kd7

Code: Select all

New game
r3k1r1/1b3p1p/p2bpp2/2p5/P2p3P/3Q1P1R/1PPP2P1/R1BqNK2 b q - 0 1

Analysis by Houdini 3 Pro x64:

-/+  (-1.24) 1...Bg3 2.Rxg3 Rxg3 3.b3 Rxg2 4.Kxg2 Qxe1 5.h5 Ke7   00:00:00
-+  (-1.61) 1...Bf4 2.b3 f5 3.h5 Kf8 4.Rh4   00:00:00
-+  (-1.49) 1...Ke7 2.b3 Bf4 3.h5 f5 4.Qe2 Qxe2+ 5.Kxe2   00:00:00
-/+  (-0.71) 1...Rg3 2.b3 Rxh3 3.gxh3 Bf4 4.Qe2 Qxe2+ 5.Kxe2 e5 6.Nd3   00:00:00
-/+  (-1.14) 1...Bd5 2.b3 Bf4 3.c4 Bb7 4.Qxh7 Ke7 5.Qc2   00:00:00
-/+  (-1.24 !) 1...Bf4   00:00:00
-/+  (-1.04) 1...Bf4 2.b4 cxb4 3.Qxd4 Be5 4.Qxb4 Rxg2 5.Qf8+ Kxf8 6.Ba3+ Kg8 7.Rxd1 Rg7 8.Nd3 Bc7   00:00:00
-/+  (-0.94 --) 1...Bf4 2.b4   00:00:00
-/+  (-1.14 !) 1...Rc8   00:00:00
-/+  (-0.94 --) 1...Rc8 2.b4   00:00:00
-/+  (-1.03) 1...Rc8 2.b4 c4 3.Qxd4 Be5 4.Qa7 Bxa1 5.Qxb7 Rd8 6.Qc6+ Ke7 7.Qc7+ Rd7 8.Qc5+ Kd8 9.Qc6 Rg7 10.Qc5 Ke8   00:00:00
-/+  (-1.13 !) 1...Rc8   00:00:00
-/+  (-0.93 --) 1...Rc8 2.b3   00:00:00
-/+  (-1.34 !) 1...Bf4   00:00:00
-/+  (-1.20) 1...Bf4 2.b4 cxb4 3.Qxd4 e5 4.Qb6 Bd5 5.g4 e4 6.Qxb4 exf3 7.Qe7+ Kxe7 8.Ba3+ Kd7 9.Rxd1 Rxg4 10.Nxf3 Bg3 11.Nd4 Rf4+ 12.Ke2 Re8+ 13.Kd3 Bxh4   00:00:00
-/+  (-1.30 !) 1...Bf4   00:00:00
-/+  (-1.09 --) 1...Bf4 2.b3   00:00:00
-/+  (-0.89 --) 1...Bf4 2.b3   00:00:00
-/+  (-0.85) 1...Bf4 2.b3 Bc6 3.Bb2 Qxd2 4.Qxd2 Bxd2 5.Nd3 c4 6.bxc4 e5 7.Rd1 Ba5 8.Nc5 Rb8 9.Ba3 Rb6 10.g4 Bc3 11.Kf2   00:00:00
-/+  (-0.75 --) 1...Bf4 2.b3   00:00:01
=/+  (-0.57 --) 1...Bf4 2.b3   00:00:01
-/+  (-0.95 !) 1...Bf4   00:00:01
=/+  (-0.64) 1...Bf4 2.b3 Ke7 3.g3 a5 4.c4 Rac8 5.Rb1 Bh6 6.Qe2 Qxe2+ 7.Kxe2 e5 8.d3 Bxc1 9.Rxc1 f5 10.Nc2 e4 11.Ne1 e3 12.Nc2   00:00:01
=/+  (-0.64) 1...Bf4 2.b3 Ke7 3.g3 a5 4.c4 Rac8 5.Rb1 Bh6 6.Qe2 Qxe2+ 7.Kxe2 e5 8.d3 Bxc1 9.Rxc1 f5 10.Nc2 e4 11.Ne1 e3 12.Nc2   00:00:01
-/+  (-0.74 !) 1...Bf4   00:00:01
=/+  (-0.56 --) 1...Bf4 2.b3   00:00:01
-/+  (-0.94 !) 1...Rxg2   00:00:01
-/+  (-0.85) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qf4 12.Rf1 Qe3+ 13.Kh1 Qe5 14.Bc1 h4 15.Qh3 Qh5 16.Kg1 Qg6+ 17.Kh1 Bg3   00:00:02
-/+  (-0.85) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qf4 12.Rf1 Qe3+ 13.Kh1 Qe5 14.Bc1 h4 15.Qh3 Qh5 16.Kg1 Qg6+ 17.Kh1 Bg3   00:00:02
-/+  (-0.85) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qf4 12.Rf1 Qe3+ 13.Kh1 Qe5 14.Bc1 h4 15.Qh3 Qh5 16.Kg1 Qg6+ 17.Kh1 Bg3   00:00:02
-/+  (-0.95 !) 1...Rxg2   00:00:03
-/+  (-1.04) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qg5 12.Rf1 Bf4 13.Qxg5 fxg5 14.Kf2 h4 15.Ba3 Kd6 16.Bc1 Bg3+ 17.Ke2 f6 18.Rg1 Ke5 19.Rh1   00:00:03
-/+  (-1.04) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qg5 12.Rf1 Bf4 13.Qxg5 fxg5 14.Kf2 h4 15.Ba3 Kd6 16.Bc1 Bg3+ 17.Ke2 f6 18.Rg1 Ke5 19.Rh1   00:00:04
-/+  (-1.04) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qg5 12.Rf1 Bf4 13.Qxg5 fxg5 14.Kf2 h4 15.Ba3 Kd6 16.Bc1 Bg3+ 17.Ke2 f6 18.Rg1 Ke5 19.Rh1   00:00:05
-/+  (-1.04) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qg5 12.Rf1 Bf4 13.Qxg5 fxg5 14.Kf2 h4 15.Ba3 Kd6 16.Bc1 Bg3+ 17.Ke2 f6 18.Rg1 Ke5 19.Rh1   00:00:08
-/+  (-1.14 !) 1...Kd7   00:00:11
-/+  (-1.14) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.g4 Ba5 7.Bb2 e5 8.Rc1 Rc4 9.g5 Rxa4 10.Nd3 Rc8 11.gxf6 Ke6 12.Rg3 h6 13.f4 exf4 14.Nxf4+ Kxf6 15.Kd1 Bc7   00:00:11
-/+  (-1.04 --) 1...Kd7 2.b4   00:00:16
-/+  (-1.02) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.g4 Ba5 7.Kd1 Rc4 8.g5 Bc6 9.f4 Rc8 10.Rg3 Bd8 11.a5 Ba4 12.gxf6 Bxf6 13.Ra2 Bxh4 14.Rg7 h5 15.Ba3 Be7 16.Rxf7   00:00:23
-/+  (-1.04) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Bb2 Qf5 6.d3 Ke7 7.Qg2 h5 8.Kf2 Rg8 9.Qxg8 Qxh3 10.Qg2 Qxh4+ 11.Kg1 Qg5 12.Rf1 Bf4 13.Qxg5 fxg5 14.Kf2 h4 15.Ba3 Kd6 16.Bc1 Bg3+ 17.Ke2 f6 18.Rg1 Ke5 19.Rh1   00:00:24
-/+  (-0.94 --) 1...Rxg2 2.b3   00:00:25
-/+  (-1.06) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Kd1 Ba5 7.g4 Rc4 8.g5 Bc6 9.f4 Rc8 10.Rg3 Bd8 11.Bb2 Bxa4 12.Rd3 e5 13.fxe5 fxe5 14.Rf3 Ke6 15.Ke2 Bxc2 16.Nxc2 Rxc2 17.Rxa6+ Kd5   00:00:33
-/+  (-0.96 --) 1...Kd7 2.b4   00:00:54
-/+  (-1.16 !) 1...Kd7   00:01:33
-/+  (-1.24) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Bb2 e5 7.g4 Ba5 8.Ba3 Rc4 9.Kd1 Rgc8 10.Ra2 Bd5 11.Nd3 Ke8 12.Bc1 Bc6 13.Rg3 Rxa4 14.Ra3 Rxa3 15.Bxa3 Bb6 16.Bc5 Bd8 17.Nb4 Bb5 18.Bd6 a5 19.Nd5 a4   00:02:15
-/+  (-1.24) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Bb2 e5 7.g4 Ba5 8.Ba3 Rc4 9.Kd1 Rgc8 10.Ra2 Bd5 11.Nd3 Ke8 12.Bc1 Bc6 13.Rg3 Rxa4 14.Ra3 Rxa3 15.Bxa3 Bb6 16.Bc5 Bd8 17.Nb4 Bb5 18.Bd6 a5 19.Nd5 a4   00:02:19
-/+  (-1.24) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.g4 Ba5 7.Bb2 e5 8.Kd1 Rc4 9.Ba3 Rgc8 10.Ra2 Bd5 11.Nd3 Ke8 12.Bc1 Bc6 13.Rg3 Rxa4 14.Ra3 Rxa3 15.Bxa3 Bb6 16.Bc5 Bd8 17.Nb4 Bb5 18.Bd6   00:03:19
-/+  (-1.35 !) 1...Kd7   00:04:39
-/+  (-1.31) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Rb1 a5 7.g4 e5 8.Kd1 Bc6 9.Ra1 Ke7 10.Rh2 h5 11.gxh5 Rh8 12.Ba3 Bxa3 13.Rxa3 Rxh5 14.Rb3 Rc7 15.Rb6 Bxa4 16.Ra6 Rc5 17.Ra7+ Ke6 18.Rh3 d3 19.Nxd3 Bxc2+ 20.Ke2 Rb5 21.Nf2 f5 22.Rc7 Rb2   00:06:20

(Matteo,  02.02.2013)

and with Stockfish -+ (-1.85) 1...Kd7

Code: Select all

New game
r3k1r1/1b3p1p/p2bpp2/2p5/P2p3P/3Q1P1R/1PPP2P1/R1BqNK2 b q - 0 1

Analysis by Stockfish 2.3.1 JA 64bit SSE4.2:

-+  (-2.58) 1...Bg3 2.Qe2 Qxe1+ 3.Qxe1 Bxe1 4.Kxe1 Rxg2   00:00:00
-+  (-2.14) 1...Bc6 2.Qe2 Qxe2+ 3.Kxe2 Rb8 4.b3 Ke7 5.Ba3   00:00:00
-+  (-2.26) 1...Bc6 2.Qe2 Qxe2+ 3.Kxe2 c4 4.Kf2 Ke7 5.d3 cxd3 6.Nxd3 Rab8   00:00:00
-+  (-2.22) 1...Bg3 2.Qe2 Qxe2+ 3.Kxe2 c4 4.d3 Rc8 5.Bd2 Bxe1 6.Bxe1 cxd3+ 7.Kxd3 Rxg2 8.Kxd4 Rcxc2   00:00:00
-+  (-2.10) 1...Bg3 2.Qe2 Qxe2+ 3.Kxe2 Ke7 4.Nd3 Bd6 5.Ne1 Bd5 6.b3 c4 7.bxc4 Bxc4+ 8.d3 Bd5 9.Rb1   00:00:00
-+  (-2.34) 1...Bg3 2.Qe2 Qxe2+ 3.Kxe2 Ke7 4.Nd3 Bd6 5.Ne1 c4 6.d3 Bd5 7.dxc4 Bxc4+ 8.Kf2 Rac8 9.Bd2 Bd5   00:00:00
-+  (-2.18) 1...Bg3 2.Qe2 Qxe2+ 3.Kxe2 Ke7 4.Nd3 Bd6 5.Ne1 c4 6.d3 Rac8 7.dxc4 Rxc4 8.b3 Rc3 9.Ba3 Bxa3 10.Rxa3 Bd5 11.h5   00:00:00
-+  (-1.73) 1...Rc8 2.b3 Bf4 3.Qe2 Qxe2+ 4.Kxe2 Bg3 5.Rxg3 Rxg3 6.Kf2 Rg8 7.Bb2 Ke7 8.Nd3   00:00:00
-+  (-1.45) 1...Bc7 2.b3 Ba5 3.Qe2 Qxe2+ 4.Kxe2 Rc8 5.Ba3 Kd7 6.g3 c4 7.b4 Bb6 8.b5 axb5 9.axb5 Ra8 10.g4   00:00:00
-+  (-1.41) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Kf1 Qf5 7.d3 Rg8 8.Qxg8 Qxh3+ 9.Qg2 Qxf3+ 10.Qxf3 Bxf3 11.Bd2   00:00:00
-+  (-1.69) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Kf1 d3 7.c3 Bd5 8.Ba3 Bxb3 9.Re1 Qf5 10.Rb1 Rb8 11.a5 h5 12.Rh1   00:00:00
-+  (-1.97) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Kf1 d3 7.c3 Bd5 8.Ra3 Rb8 9.c4 Bc6 10.h5 h6 11.a5 Bc7 12.Rh4 Qf5 13.Rh3 Qe5   00:00:00
-+  (-1.53) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 Qf5 7.d3 Rg8 8.Qxg8 Qxh3 9.Qg2 Qxh4 10.Rf1 Qh5 11.Bc1 Qf5 12.Bh6 Bd5 13.Qg4   00:00:01
-+  (-1.53) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 Qf5 7.d3 Rg8 8.Qxg8 Qxh3 9.Qg2 Qxh4 10.Rf1 Qh5 11.Bc1 Qf5 12.Bh6 Bd5 13.Qg4   00:00:01
-+  (-1.65) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qc1 15.Rh1 Qxc4 16.Qe3   00:00:01
-+  (-1.57 --) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Rh1 Bf4   00:00:02
-+  (-1.57) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.65 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.73 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.57) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.65 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.73 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Qg2 Ke7 6.Ba3 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:02
-+  (-1.85 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.a5 Ke7 6.Bb2 Rg8+ 7.Kh1 Qf4   00:00:03
-+  (-1.57) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:03
-+  (-1.65 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Bd5 8.Rb1 Rb8 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Kg2 Qb4 15.Qe3 Qxc4 16.Qe4 Qc2 17.Qb7+ Kf8   00:00:03
-+  (-1.73 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Bd5 8.Rb1 Rb8 9.Kf1 Rxb3 10.Rxb3 Bxb3 11.a5 Bd5 12.h5 Qf4   00:00:04
-+  (-1.85 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Bd5 8.Rb1 Rb8 9.Kf1 Rxb3 10.Rxb3 Bxb3 11.a5 Bd5 12.h5 Qf4   00:00:04
-+  (-1.93) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Rb1 Bd5 9.c4 Bxc4 10.Bb2 Qf4 11.bxc4 Rxb2 12.Rxb2 Qd4+ 13.Qf2 Qxb2 14.Qe3 Qc1+ 15.Kf2 Qxc4 16.Qe4 Qc2 17.Qe3 Qxa4 18.Qxd3 Qd4+ 19.Qxd4 cxd4   00:00:05
-+  (-1.85 --) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Kf1 Bd5 9.Re1 Qf4 10.Qf2 Qf5 11.Rg3 Bxg3 12.Qxg3 Rc8 13.b4 Bxf3 14.bxc5 Bc6+ 15.Kg1 Qd5 16.Qd6+ Qxd6 17.cxd6+ Kd7 18.Rb1   00:00:06
-+  (-1.85) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Kf1 Bd5 9.Re1 Qf4 10.Qf2 Qf5 11.Rg3 Bxg3 12.Qxg3 Rc8 13.b4 Bxf3 14.bxc5 Bc6+ 15.Kg1 Qd5 16.Qd6+ Qxd6 17.cxd6+ Kd7 18.Rb1 Rg8+ 19.Kf2 Rg4 20.Rb6 Rxa4   00:00:06
-+  (-1.77 --) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Kf1 Bd5 9.Re1 Qf4 10.Qf2 Qf5 11.Rg3 Bxg3 12.Qxg3 Rc8 13.b4 Bxf3 14.bxc5 Bc6+ 15.Kg1 Qd5 16.Qd6+ Qxd6 17.cxd6+ Kd7 18.Rb1 Rg8+ 19.Kf2 Rg4 20.Rb4 Rg8 21.Rb6   00:00:07
-+  (-1.93 !) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Kf1 a5 9.Rb1 Qf4 10.Qf2 Qf5 11.Qg2 h5 12.c4 Rg8 13.Qxg8 Qxh3+ 14.Qg2 Qf5   00:00:08
-+  (-1.97) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Kf1 a5 9.Rb1 Qf4 10.c4 Bc6 11.Bb2 Kf8 12.Bc3 Bxa4 13.Qg4 Bxb3 14.Bxa5 Qxc4 15.Qxc4 Bxc4 16.Rxb8+ Bxb8 17.Bb6 Bd6   00:00:08
-+  (-1.89 --) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Rb1 Bd5 9.b4 Qf4 10.Rc1 cxb4 11.Bxb4 Bxb4 12.cxb4 Rxb4 13.Qf2 Rxa4 14.Qc5+ Qd6 15.Qa7+ Qd7 16.Rc7 Ra1+ 17.Kg2   00:00:11
-+  (-1.81 --) 1...Rxg2 2.b3 f5 3.Bb2   00:00:12
-+  (-1.73) 1...Rxg2 2.b3 Rg1+ 3.Kxg1 Qxe1+ 4.Qf1 Qe5 5.Ba3 Ke7 6.Qg2 d3 7.c3 Rb8 8.Rb1 a5 9.c4 Bc6 10.Bb2 Qf4 11.Kf1 Kf8 12.Bc3 Bxa4 13.Qg4 Bxb3 14.Bxa5 Qxc4 15.Qxc4 Bxc4 16.Rxb8+ Bxb8 17.Bb6 Bd6 18.Kf2   00:00:15
-+  (-1.81 !) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Ba3 Ba5 7.g4 Rc4 8.Nd3 Rgc8 9.Rb1 Bd5 10.Bb4 Bd8 11.c3 a5   00:00:38
-+  (-1.73) 1...Kd7 2.b4 c4 3.Qxc4 Rac8 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Kd1 Bd5 7.Ba3 Bxa3 8.Rxa3 Ke7 9.Ke2 Rb8 10.g4 Rgc8 11.c3 dxc3 12.Rxc3 Rxc3 13.dxc3 Rb2+ 14.Kd3 Ra2 15.Nc2 a5 16.Ne3 Bc6 17.Nc4 Rxa4 18.h5 Bd5   00:00:42
-+  (-1.81 !) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Bb2 e5 7.Rh2 f5 8.Nd3 Bd6   00:00:52
-+  (-1.89 !) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.a5 e5 7.Nd3 Bd6   00:01:20
-+  (-1.85) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Rh1 Rab8 7.Rg1 Rgc8 8.Ba3 Bxa3 9.Rxa3 Rb1 10.Kf2 e5 11.a5 Rb2 12.g4 h6 13.h5 Ke7 14.Ra1 Ke6 15.Ke2 Bc6 16.Rh1 f5 17.gxf5+ Kxf5 18.Rg1 Ke6   00:01:38
-+  (-1.77 --) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Ba3 Bxa3 7.Rxa3 Rab8 8.Kf2 Rb2 9.Rg3 Rxg3 10.Kxg3 Kd6 11.a5 e5 12.Kf2 f5 13.g3 f6 14.Ra1 h6 15.Ke2   00:01:53
-+  (-1.93 !) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Ba3 Bc4+ 7.Kd1 Bxa3 8.Rxa3 Rab8 9.Ra1 f5 10.Rh1 e5 11.Rg1 Kd6 12.Nd3 f6 13.g4 fxg4 14.Rxg4 Bd5 15.Ke2 e4   00:02:01
-+  (-1.69 --) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Ba3 Bc4+ 7.Kd1 Bxa3 8.Rxa3 Rab8 9.Ra1 f5 10.Rh1 e5 11.Rg1 Kd6 12.Nd3 Bxd3 13.cxd3 Rb4 14.Ke2   00:02:10
-+  (-1.85) 1...Kd7 2.b4 c4 3.Qxc4 Bd5 4.Qe2 Qxe2+ 5.Kxe2 Bxb4 6.Ba3 Bc4+ 7.Kd1 Bxa3 8.Rxa3 Rab8 9.Ra1 f5 10.Rh1 e5 11.Rg1 Bd5 12.g4 fxg4 13.Rxg4 Rxg4 14.fxg4 f6 15.Ra3 Kd6 16.Rg3 e4 17.Ke2 Rb4 18.g5 fxg5 19.Rxg5 Rxa4   00:02:12

(Matteo,  02.02.2013)
Bye
/Matteo
Top
Mdannib
Posts: 75
Joined: Tue Jul 13, 2010 12:06 am

Re: Questionable test positions?

Post by Mdannib »

The second with Houdini -+ (-1.89) 1...b4

Code: Select all

New game
6k1/r4pp1/2p1p2p/qp5P/r2P4/2Q1RPP1/PP6/1K2R3 b - - 0 1

Analysis by Houdini 3 Pro x64:

-+  (-1.51) 1...Qd8 2.a3 Rc4 3.Qd3 Rxd4 4.Qc2   00:00:00
-+  (-1.53) 1...Qb6 2.a3 Rc4 3.Qd3 Rxd4 4.Qc2 Rad7   00:00:00
-/+  (-1.14) 1...Qb6 2.Qc5 Qxc5 3.dxc5 Rxa2 4.Rd1 R7a4 5.Re4 Ra8 6.Kc2   00:00:00
-+  (-1.59) 1...Qd8 2.a3 Rc4 3.Qd3 Rxd4 4.Qc2 Qd5 5.Rc1 Rc4 6.Rc3 Qxh5 7.Rxc4 bxc4 8.Qxc4 Qxf3   00:00:00
-+  (-1.57) 1...Qd8 2.a3 Rc4 3.Qb3 Rxd4 4.Qc2 Qd5 5.Rc1 Rc4 6.Rd1 Rxc2 7.Rxd5   00:00:00
-+  (-1.46 --) 1...Qd8 2.a3   00:00:00
-+  (-1.68 !) 1...Qd8   00:00:00
-+  (-1.48) 1...Qd8 2.a3 Rc4 3.Qb3 Rxd4 4.Rc1 Rc7 5.Qc3 c5 6.Qa5 Qd7   00:00:00
-+  (-1.58) 1...Qd8 2.a3 Rc4 3.Qb3 Rxd4 4.Rc1 Rc7 5.Rec3 Qd6 6.f4 Rd2 7.Qb4   00:00:00
-+  (-1.47 --) 1...Qd8 2.a3   00:00:00
-+  (-1.58) 1...Qd8 2.a3 Rc4 3.Qb3 Rxd4 4.Rc1 Rc7 5.Rec3 Qd6 6.f4 Rd2 7.Qb4   00:00:00
-+  (-1.47 --) 1...Qd8 2.a3   00:00:00
-/+  (-1.35) 1...Qd8 2.a3 Rc4 3.Qb3 Rxd4 4.f4 Qd7 5.Rc1 Rc7 6.Rec3 Qd6 7.Qc2 Rd2 8.Qe4 f5 9.Qe3 Qd5   00:00:00
-+  (-1.46 !) 1...Qd8   00:00:00
-/+  (-1.33) 1...Qd8 2.a3 b4 3.axb4 Rb7 4.b5 cxb5 5.b3 Rxd4 6.Rc1 Rbd7 7.Qc8 Qxc8 8.Rxc8+ Kh7 9.Rc2 R7d5 10.g4 Rd2 11.Rxd2 Rxd2   00:00:00
-+  (-1.47) 1...Qb6 2.a3 Rc4 3.Qd2 Rxd4 4.Rd3 Rad7 5.Rxd4 Rxd4 6.Qc2 c5 7.Rd1 c4 8.g4 Qd6 9.Rxd4 Qxd4 10.a4 bxa4 11.Qxa4   00:00:00
-/+  (-1.37) 1...Qb6 2.a3 Rc4 3.Qd2 Rxd4 4.Rd3 Rad7 5.Rxd4 Rxd4 6.Qc2 c5 7.Rd1 c4 8.g4 Qd6 9.Rxd4 Qxd4 10.a4 bxa4 11.Qxa4 Qd3+ 12.Qc2 e5 13.b4   00:00:00
-+  (-1.58 !) 1...b4   00:00:00
-/+  (-1.36 --) 1...b4 2.Qxc6   00:00:00
-/+  (-1.37) 1...Qb6 2.a3 Rc4 3.Qd2 Rxd4 4.Rd3 Rad7 5.Rxd4 Rxd4 6.Qc2 c5 7.Rd1 c4 8.g4 Qd6 9.Rxd4 Qxd4 10.a4 bxa4 11.Qxa4 Qd3+ 12.Qc2 e5 13.b4   00:00:00
-/+  (-1.37) 1...Qb6 2.a3 Rc4 3.Qd2 Rxd4 4.Rd3 Rad7 5.Rxd4 Rxd4 6.Qc2 c5 7.Rd1 c4 8.g4 Qd6 9.Rxd4 Qxd4 10.a4 bxa4 11.Qxa4 Qd3+ 12.Qc2 e5 13.b4   00:00:01
-/+  (-1.26 --) 1...Qb6 2.a3   00:00:01
-+  (-1.48 !) 1...b4   00:00:01
-+  (-1.70 !) 1...b4   00:00:02
-+  (-1.73) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Ra8 6.Re5 R8a4 7.Qb8 Ra1+ 8.Kc2 Rc4+ 9.Kd3 Rxd4+ 10.Ke3 Re1+ 11.Kf2 Rxe5 12.Qxe5 Rd2+ 13.Kf1 Rd1+ 14.Kf2 Qd2+ 15.Qe2 Qd4+ 16.Kg2 Rg1+ 17.Kh2   00:00:02
-+  (-1.83 !) 1...b4   00:00:02
-+  (-2.05 !) 1...b4   00:00:02
-+  (-1.84) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qc7 9.Qc3 Ra8 10.Re5 Ra1 11.Re1 R1a4 12.Qd2 c5   00:00:02
-+  (-1.73 --) 1...b4 2.Qc5   00:00:02
-+  (-1.81) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qc7 9.Qb4 Ra8 10.Re5 Qd8 11.Qc3 R8a4 12.Rb4 Rxb4 13.Qxb4   00:00:03
-+  (-1.91) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qc7 9.Qb4 Ra8 10.Re5 Qd8 11.Qd2 Qd7 12.Qc3 R2a4 13.Rb4 Ra2   00:00:03
-+  (-1.81 --) 1...b4 2.Qc5   00:00:03
-+  (-1.81) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rd1 Qc7 10.Qe2 R2a4 11.Qe3 Rb5 12.Rxb5 cxb5+ 13.Kb1 Qa7 14.Kc2 Rc4+ 15.Kb1   00:00:03
-+  (-1.88) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rc1 R5a4 10.Rd1 Qc7 11.Qe2 Ra5 12.Qd3 Ra8 13.Qe2 R2a5 14.Rh1 Rd5 15.Qe3 c5   00:00:04
-+  (-1.77 --) 1...b4 2.Qc5   00:00:06
-+  (-1.75) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Qd6 10.Qb4 Qd7 11.Rd1 Qd5 12.Qc3 Rb5 13.Rxb5 cxb5 14.Qb3 Qa8 15.Rc1 b4 16.Qxb4 Qxf3 17.Kb1 Ra8   00:00:07
-+  (-1.75) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Qd6 10.Qb4 Qd7 11.Rd1 Qd5 12.Qc3 Rb5 13.Rxb5 cxb5 14.Qb3 Qa8 15.Rc1 b4 16.Qxb4 Qxf3 17.Kb1 Ra8   00:00:08
-+  (-1.75) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Qd6 10.Qb4 Qd7 11.Rd1 Qd5 12.Qc3 Rb5 13.Rxb5 cxb5 14.Qb3 Qa8 15.Rc1 b4 16.Qd3 Qa4+ 17.Qb3 Qc6+ 18.Kb1   00:00:10
-+  (-1.75) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Qd6 10.Qb4 Qd7 11.Rd1 Qd5 12.Qc3 Rb5 13.Rxb5 cxb5 14.Qb3 Qa8 15.Rc1 b4 16.Qd3 Qa4+ 17.Qb3 Qc6+ 18.Kb1   00:00:13
-+  (-1.75) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Qd6 10.Qb4 Qd7 11.Rd1 Qd5 12.Qc3 g6 13.Rb6 Rb5 14.Rxb5 cxb5 15.Kb1 Kg7 16.Rc1 Ra8 17.Qd3 b4   00:00:16
-+  (-1.79) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Rb5 10.Rd1 Rd5 11.Qc3 Qc7 12.Qb4 Rb5 13.Qc3 Rba5 14.Qe3 R2a4 15.Rc3 Rb5 16.Rc5 Ra8 17.Rxb5 cxb5+ 18.Kb1 Qc4 19.Rc1 Qa2+ 20.Kc2 b4 21.f4 Rc8+ 22.Kd1   00:00:26
-+  (-1.79) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 Rb5 10.Rd1 Rd5 11.Qc3 Qc7 12.Qb4 Rb5 13.Qc3 Rba5 14.Qe3 R2a4 15.Rc3 Rb5 16.Rc5 Ra8 17.Rxb5 cxb5+ 18.Kb1 Qc4 19.Rc1 Qa2+ 20.Kc2 b4 21.f4 Rc8+ 22.Kd1   00:00:36
-+  (-1.89 !) 1...b4   00:01:12
-+  (-1.89) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qc4 Rxa2 5.f4 b3+ 6.Rxb3 Rxh5 7.Qxc6 Rh2+ 8.Kd3 Rhxb2 9.Rxb2 Rxb2 10.Ra1 Rb3+ 11.Ke2 Qxd4 12.Ra8+ Kh7 13.Qc2+ g6 14.Qxb3 Qe4+ 15.Kf2 Qxa8 16.Qc3 h5 17.Qd2 Qa7+ 18.Kg2 Qa1 19.Qc2 Qd4 20.Qc7 Qb2+ 21.Kh3 Kg7 22.Qe7 Qb1   00:03:14

(Matteo,  02.02.2013)
with Stockfish -+ (-2.46 !) 1...b4
New game
6k1/r4pp1/2p1p2p/qp5P/r2P4/2Q1RPP1/PP6/1K2R3 b - - 0 1

Analysis by Stockfish 2.3.1 JA 64bit SSE4.2:

-+ (-1.73) 1...Qb6 2.a3 Rc4 3.Qb3 Qc7 4.f4 Rxd4 00:00:00
-+ (-1.89) 1...Qc7 2.a3 b4 3.Qc5 bxa3 4.Rxa3 Qxg3 00:00:00
-+ (-1.73) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.Rc3 Rcc4 5.Rcc1 Ra8 6.b3 Rcc8 7.Rxc8+ Rxc8 00:00:00
-+ (-1.81) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.a3 b4 5.Rc1 Rxc1+ 6.Kxc1 bxa3 7.Rxa3 00:00:00
-+ (-1.89) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.a3 b4 5.Rc1 Rca7 6.Rc8+ Kh7 7.Ka2 d4 8.Rb3 bxa3 9.bxa3 00:00:00
-+ (-1.89) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.a3 b4 5.Rc1 Rca7 6.Ka2 bxa3 7.Rxa3 Rxa3+ 8.bxa3 d4 9.Kb2 Rb7+ 10.Kc2 Rc7+ 11.Kb2 Rxc1 12.Kxc1 00:00:00
-+ (-2.02) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.a3 b4 5.Rc1 Rca7 6.Ka2 bxa3 7.Rxa3 Rxa3+ 8.bxa3 Kf8 9.Kb3 Ke7 10.a4 Rb7+ 11.Kc3 Rc7+ 12.Kb2 Rxc1 13.Kxc1 00:00:00
-+ (-1.85) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.R3e2 Ra8 5.a3 b4 6.axb4 Rb7 7.Kc2 Rc8+ 8.Kd3 Rxb4 9.Rc2 Rb3+ 10.Rc3 00:00:00
-+ (-1.89) 1...Qc7 2.a3 b4 3.axb4 Qxg3 4.Re5 Qh4 5.Ra5 R7xa5 6.bxa5 Qxh5 7.Re5 Qg6+ 8.Re4 Qg1+ 9.Re1 Qxd4 10.Qxd4 Rxd4 11.Re4 Rd3 12.f4 00:00:00
-+ (-1.89) 1...Qc7 2.a3 b4 3.axb4 Qxg3 4.Re5 Qh4 5.Ra5 R7xa5 6.bxa5 Qxh5 7.Re5 Qg6+ 8.Re4 Qg1+ 9.Re1 Qxd4 10.Qxd4 Rxd4 11.Re4 Rd3 12.f4 00:00:00
-+ (-1.89) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.R3e2 Kf8 5.Rd2 Rca7 6.b3 Ra3 7.f4 Ke7 8.f5 Kd6 9.fxe6 fxe6 10.Rde2 Kc5 11.Rxe6 Rxa2 00:00:00
-+ (-1.89) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.R3e2 Kf8 5.Rd2 Rca7 6.b3 Ra3 7.f4 Ke7 8.f5 Kd6 9.fxe6 fxe6 10.Rde2 Kc5 11.Rxe6 Rxa2 00:00:00
-+ (-1.57) 1...Qc7 2.d5 cxd5 3.Qxc7 Rxc7 4.f4 Rca7 5.f5 d4 6.Re5 Rxa2 7.fxe6 fxe6 8.Kc2 d3+ 9.Kxd3 Rxb2 10.Kc3 Rg2 11.Kb4 Rxg3 12.Rxe6 Rg5 13.Re8+ Kf7 14.R8e5 Rxe5 15.Rxe5 Kf6 16.Rxb5 Rc7 17.Rc5 Rb7+ 18.Kc4 00:00:01
-+ (-1.73 !) 1...b4 2.Qxc6 Qxh5 3.d5 Rxa2 4.dxe6 b3 5.Kc1 Qh2 6.exf7+ Rxf7 7.R3e2 Qxg3 8.Kb1 Qxf3 9.Qxf3 Rxf3 10.Re8+ Kf7 11.R8e7+ Kf6 00:00:02
-+ (-1.85 !) 1...b4 2.Qxc6 Qxh5 3.d5 Rxa2 4.dxe6 b3 5.Kc1 Qh2 6.exf7+ Rxf7 7.R3e2 Qxg3 8.Kb1 Qxf3 9.Qxf3 Rxf3 10.Re8+ Kf7 11.R8e7+ Kf6 00:00:02
-+ (-2.04 !) 1...b4 2.Qxc6 Rc7 3.Qe8+ Kh7 4.Re5 Qa7 5.Rc5 Rxa2 6.Rxc7 Ra1+ 7.Kc2 Qxc7+ 8.Kd2 Ra2 00:00:02
-+ (-1.89) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R7a6 5.Rb3 R6a4 6.Qc3 Qh4 7.Ra3 R4xa3 8.bxa3 Rxa3 9.Qxa3 Qxe1+ 10.Kc2 Qe2+ 11.Kc1 Qc4+ 12.Kb1 Qf1+ 13.Kb2 Qe2+ 14.Kc1 00:00:03
-+ (-1.97 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.Kc1 R7a4 8.R3e2 Qb5 9.f4 Qb6 00:00:03
-+ (-2.06 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.Kc1 R7a4 8.R3e2 Qb5 9.f4 Qb6 00:00:03
-+ (-2.18 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.Kc1 R7a4 8.R3e2 Qd6 9.Re4 Qh2 00:00:03
-+ (-2.14) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.Kc1 R7a4 8.Kb1 Qb5 9.b3 R4a3 10.f4 Rg2 11.Qc4 Qb7 12.b4 Rxe3 13.Rxe3 Rxg4 00:00:04
-+ (-2.06 --) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.R1e2 Qb6 8.b3 Ra1+ 9.Qxa1 Rxa1+ 10.Kxa1 Qxd4+ 11.Kb1 c5 12.Kc2 00:00:04
-+ (-1.97 --) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.R1e2 Qb6 8.b3 Ra1+ 9.Qxa1 Rxa1+ 10.Kxa1 Qxd4+ 11.Kb1 c5 12.Kc2 00:00:04
-+ (-2.14) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.R1e2 Ra1+ 8.Kc2 Rb7 9.Rd2 Qf4 10.Re4 Qd6 11.Rd1 Ra4 12.Kd2 Qh2+ 13.Re2 00:00:04
-+ (-2.06 --) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.R1e2 Ra1+ 8.Kc2 Rb7 9.Rd2 Qf4 10.Re4 Qd6 11.Re3 Rb4 12.b3 00:00:04
-+ (-1.97 --) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra2 7.R1e2 Ra1+ 8.Kc2 Rb7 9.Rd2 Qf4 10.Re4 Qd6 11.d5 exd5 12.Re8+ Kh7 13.Kd3 00:00:04
-+ (-2.06) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra1+ 7.Kc2 R1a2 8.Qb3 Qh2+ 9.R3e2 Qd6 10.Qc3 R7a4 11.Rd1 Qb8 12.Re5 Rb4 13.Rb1 Raa4 14.b3 Ra2+ 15.Rb2 Ra1 16.Rc5 Rh1 17.Rxc6 Rh2+ 18.Kd1 Rh1+ 19.Ke2 00:00:05
-+ (-1.97 --) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra1+ 7.Kc2 R1a2 8.Qb3 Qh2+ 9.R3e2 Qd6 10.Qc3 R7a4 11.Rd1 Qb8 12.Re5 Rb4 13.Rb1 Raa4 14.b3 Ra2+ 15.Rb2 Ra1 16.Re2 Qd6 17.Qc5 Qb8 18.Qc3 00:00:05
-+ (-2.14 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra1+ 7.Kc2 R1a2 8.Qb3 Qh2+ 9.R3e2 Qd6 10.Qc3 R7a4 11.Rd1 Qb8 12.Re5 Rb4 13.Rb1 Raa4 14.b3 Ra2+ 15.Rb2 Ra1 16.Re2 Qd6 17.Qc5 Qb8 18.Qc3 00:00:05
-+ (-2.14) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 Qb8 6.Qc3 Ra1+ 7.Kc2 R1a2 8.Qb3 Qh2+ 9.R3e2 Qd6 10.Qc3 R7a4 11.Kb1 Qf4 12.Qxc6 Ra1+ 13.Kc2 Qxd4 14.Rxa1 Rxa1 15.Rd2 00:00:05
-+ (-2.22 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 R7a5 6.Qxc6 Qxd4 7.Qc8+ Kh7 8.Qc2+ f5 9.Qc3 Ra1+ 10.Kc2 Qa4+ 11.Kd3 Rd5+ 12.Ke2 Rxe1+ 13.Kxe1 Qd1+ 14.Kf2 Rd2+ 15.Kg3 Qg1+ 00:00:06
-+ (-2.30 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Qxb4 R2a4 5.Qc5 R7a5 6.Qxc6 Qxd4 7.Qc8+ Kh7 8.Qc2+ f5 9.Qc3 Ra1+ 10.Kc2 Qa4+ 11.Kd3 Rd5+ 12.Ke2 Rxe1+ 13.Kxe1 Qd1+ 14.Kf2 Rd2+ 15.Kg3 Qg1+ 00:00:06
-+ (-2.42 !) 1...b4 2.Qc5 Qd8 3.g4 Rxa2 4.Kc1 R7a4 5.b3 Ra5 00:00:08
-+ (-2.26) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qg3 9.Rh1 R2a4 10.Qh2 Qxh2+ 11.Rxh2 Rxd4 12.Rd2 Rc5+ 13.Rc3 Rxd2+ 14.Kxd2 Rxc3 15.Kxc3 Kf8 16.Kd4 Ke7 00:00:12
-+ (-2.34 !) 1...b4 2.Qc5 Qd8 3.Rb3 R7a5 4.Qc4 Rxa2 5.Qxb4 Qg5 6.Kc2 Qxh5 7.g4 Qh2+ 8.Qd2 Qd6 9.Qb4 Qd7 10.Qb8+ Kh7 11.Qf4 R5a4 12.Qe4+ g6 13.Rd3 c5 00:00:14
-+ (-2.18 --) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Rxa2 5.Qc4 Ra8 6.Re5 b3+ 7.Kxb3 Qb8+ 8.Qb5 Qc7 9.Qb4 R2a7 10.Qc3 Qd6 11.Kc2 00:00:17
-+ (-2.34) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R7a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.g4 Rh2+ 8.Kb1 Ra4 9.Rd1 Qd5 10.Rc1 g6 11.Ra3 Rxa3 12.Qxa3 Qxd4 13.Rxc6 h5 14.gxh5 gxh5 15.Rc8+ Kh7 16.Rc2 Qd1+ 17.Rc1 Qd2 18.Qc3 00:00:19
-+ (-2.42 !) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Qc4 R7a5 5.Qxb4 Rb5 6.Qc3 Qb8 7.Rb1 Qxg3 8.Re5 Qf2+ 9.Kd1 00:00:22
-+ (-2.26 --) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R7a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.Rd1 Rh2+ 8.Rd2 Rh1 9.Qxc6 Raa1 10.Kd3 Rae1 11.Rc3 Rhf1 12.Kc4 Ra1 13.g4 Rfc1 14.d5 00:00:24
-+ (-2.14 --) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R2a5 5.Qxb4 Rb5 6.Qc4 Rxh5 7.Rd1 Rh2+ 8.Rd2 Rh1 9.Rd1 Rh3 10.f4 Ra8 11.Re3 Rh2+ 12.Rd2 Rh1 13.Rd1 Rxd1 14.Kxd1 Ra1+ 15.Kc2 h5 16.Ra3 00:00:25
-+ (-2.50 !) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Ra8 5.Kd3 Rxa2 6.R3e2 R8a3+ 7.bxa3 Rxa3+ 8.Ke4 Qf6 9.d5 exd5+ 10.Qxd5 Qxf3+ 11.Ke5 Qxg3+ 12.Ke4 Qf3+ 13.Ke5 Qxh5+ 14.Ke4 Qg4+ 15.Ke5 Ra5 00:00:28
-+ (-2.26) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Ra8 5.Kd3 Rxa2 6.R1e2 R2a6 7.Qc4 Qf6 8.g4 Rd8 9.Kc2 Raa8 10.Qxb4 Qf4 11.Qd2 Rxd4 12.Rd3 Qc7+ 13.Kb1 Rda4 14.Qc3 Qb6 15.Kc2 Rb8 16.Rd1 Qa6 17.Red2 Qb6 00:00:35
-+ (-2.34 !) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Ra8 5.Kd3 Rxa2 6.R3e2 R8a3+ 7.bxa3 Rxa3+ 8.Ke4 Qf6 9.d5 exd5+ 10.Qxd5 Qxf3+ 11.Ke5 Qxg3+ 12.Ke4 Qf3+ 13.Ke5 Qxh5+ 14.Ke4 Qf3+ 15.Ke5 Ra5 00:00:37
-+ (-2.42 !) 1...b4 2.Qxc6 Rc7 3.Qe8+ Kh7 4.Re5 Qa7 5.Rc1 Rxc1+ 6.Kxc1 b3 7.Rxe6 bxa2 00:00:38
-+ (-2.18 --) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Ra8 5.Kd3 Rxa2 6.R1e2 b3 7.Re5 R8a4 8.Qc3 Ra1 9.Re1 00:00:44
-+ (-2.54 !) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qxc6 Ra7 5.Kd3 b3 6.axb3 Rxd4+ 7.Ke2 Rc7 8.Qb5 Rd5 9.Qa6 Rc2+ 10.Kf1 Rh2 11.R3e2 Rdxh5 12.Rxh2 Rxh2 00:00:46
-+ (-2.62) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qc4 Rxa2 5.f4 R2a4 6.Re5 b3+ 7.Qxb3 Rxd4 8.Rxa5 Qxa5 9.Rd1 Rxd1 10.Kxd1 Qxh5+ 11.Ke1 Qh2 12.Kf1 h5 13.Qf3 c5 14.Qa8+ Kh7 15.Qb7 Kg6 16.Qe4+ Kh6 17.Qe3 Qxb2 18.f5+ Kh7 19.fxe6 Qf6+ 20.Kg2 00:00:58
-+ (-2.54 --) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R2a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.g4 Rh2+ 8.Kb1 Qd5 9.Rc1 Ra4 10.Ra3 Rxd4 11.Qxc6 Rdd2 12.Qe8+ Kh7 00:01:01
-+ (-2.46 --) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R2a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.g4 Rh2+ 8.Kb1 Qd5 9.Rc1 Ra4 10.Ra3 Rxd4 11.Qxc6 Rdd2 12.Qc3 Kh7 13.Rb3 e5 14.Rb8 00:01:02
-+ (-2.34 --) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R2a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.g4 Rh2+ 8.Kb1 Qd5 9.Re5 Rh1+ 10.Kc2 Qd8 11.Re1 Rh2+ 00:01:02
-+ (-2.16 --) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qc4 Rxa2 5.f4 R2a4 6.Kb3 Kh8 7.f5 Ra7 8.fxe6 fxe6 9.Rxe6 00:01:04
-+ (-2.10) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qc4 Rxa2 5.f4 b3+ 6.Rxb3 R2a4 7.Rb4 Rxb4 8.Qxb4 Rxh5 9.Re5 Rh2+ 10.Kb1 h5 11.Qc3 g6 12.Rc5 h4 13.gxh4 Qxh4 14.Qe3 Qf2 15.Qxf2 Rxf2 16.Rxc6 Rxf4 17.Kc2 Rxd4 00:01:16
-+ (-2.18 !) 1...b4 2.Qc5 Qd8 3.Kc2 R7a5 4.Qc4 Rxa2 5.Qxb4 Rb5 6.Qc3 Qb8 7.Rb1 Qxg3 8.Qc4 Rba5 9.Qxc6 Qf2+ 10.Kd3 Ra8 11.Re4 Qxf3+ 12.Kd2 Qxh5 00:01:20
-+ (-2.26 !) 1...b4 2.Qxc6 Rc7 3.Qe8+ Kh7 4.Re5 Qa7 5.Rc1 Rxc1+ 6.Kxc1 b3 7.Rxe6 bxa2 00:01:24
-+ (-2.38 !) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R7a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.Rd1 g6 8.Qxc6 Rh2+ 9.Kb1 Qa5 00:01:30
-+ (-2.30) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R7a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.Rd1 g6 8.Qc4 Rh2+ 9.Rd2 Rh1 10.Rd1 Rxd1 11.Kxd1 Ra1+ 12.Kc2 Qg5 13.f4 Qh5 14.Qd3 Qh2+ 15.Kc3 Rc1+ 16.Kb4 h5 17.Ka4 Kg7 18.Qe3 Ra1+ 19.Ra3 Qxb2 20.Rxa1 Qxa1+ 21.Kb4 00:01:34
-+ (-2.38 !) 1...b4 2.Qc5 Qd8 3.Kc2 Rxa2 4.Rb3 R7a5 5.Qxb4 Rb5 6.Qc3 Rxh5 7.Rd1 Ra4 8.Qxc6 Rh2+ 9.Rd2 Rxd2+ 10.Kxd2 Rxd4+ 11.Kc2 00:01:43
-+ (-2.46 !) 1...b4 2.Qxc6 Rc7 3.Qe8+ Kh7 4.Re5 Qa7 5.Rc1 Rxc1+ 6.Kxc1 b3 7.Rxe6 bxa2 00:01:47

(Matteo, 03.02.2013)

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Ajedrecista
Posts: 1952
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Questionable test positions?

Post by Ajedrecista »

Hello John:
JVMerlino wrote: [D]6k1/6pp/pp6/2p1Qp1q/2Pp1P2/1P1P2P1/P4P2/6K1 b - -
I have Qd1 and draw as best, but some engines say g6 and h6 also lead to draw?

Many thanks in advance,
jm
Houdini agrees with the fact that all these three moves are enough to draw:
27/61 18:16 1.261.031.940 1.152.000 -0,07 h7h6 Kg1g2 Qh5g6 Qe5d5+ Kg8h7 Qd5b7 a6a5 Qb7c7 Qg6e6 Kg2f1 h6h5 Qc7b7 Kh7h6 Qb7b8 Kh6h7 Qb8c7 Qe6g6 Qc7e5 Qg6g4 Kf1g2 h5h4 Qe5e6 Qg4h5 Qe6e5 h4xg3 f2xg3 Qh5f7 a2a4 Qf7b7+
27/61 18:16 1.261.031.940 1.152.000 0,00 g7g6 Qe5e6+ Kg8g7 Qe6e7+ Kg7g8 Kg1g2 Qh5d1 Qe7d8+ Kg8g7 Qd8xb6 Qd1xd3 Qb6xc5 Qd3e4+ Kg2f1 Qe4b1+ Kf1g2 Qb1e4+ Kg2f1
27/61 18:16 1.261.031.940 1.152.000 0,00 Qh5d1+ Kg1g2 g7g6 Qe5e6+ Kg8g7 Qe6e7+ Kg7g8 Qe7d8+ Kg8g7 Qd8xb6 Qd1xd3 Qb6xc5 Qd3e4+ Kg2f1 Qe4b1+ Kf1g2 Qb1e4+ Kg2f1
Evals are from the side to move, so ..., h6 is considered slightly better for white. I know that it is not a very deep analysis, but it is better than nothing! Good luck with Myrddin.

Regards from Spain.

Ajedrecista.
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