interesting correspondence position

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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

interesting correspondence position

Post by jdart »

1rr3k1/5qpp/2b5/3pPp1P/2nQ4/1p1N3R/PP2N3/1K1R4 w - - 0 30

Here White played 30. Rg3. This is actually a pawn offer, because Black could play bxa2 and White can't reply Kxa2 (.. Ba4 then is winning).

White was soon winning after .. Qe7. Possibly Black has a better defense. Maybe he should have taken the pawn offer. 30. .. Qe6 also looks interesting. But in any case 30. Rg3 looks like the best move for White.

Stockfish and Houindi find Rg3 quickly, but Arasan gets stuck on 30. a3 (so does Fritz 15).

The game:

[Event "W-ch38 prel05 email"]
[Site "ICCF email"]
[Date "2014.03.20"]
[Round "?"]
[White "Dolya, Anatoly Leonidovich"]
[Black "Raessler, Arndt"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2379"]
[BlackElo "2284"]
[PlyCount "65"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4
Bc5 9. Qd2 O-O 10. O-O-O a6 11. Nb3 Be7 12. h4 b5 13. Kb1 Nb6 14. Qf2 Nc4 15.
Bc5 Rb8 16. g4 a5 17. Bxe7 Qxe7 18. g5 Bb7 19. Rh3 a4 20. Nc5 N6a5 21. Bxc4
Nxc4 22. Nd3 Rfd8 23. Qd4 Rdc8 24. f5 exf5 25. h5 Bc6 26. g6 b4 27. gxf7+ Qxf7
28. Ne2 b3 29. cxb3 axb3 30. Rg3 Qe7 31. Rxg7+ Kxg7 32. Rg1+ Kf7 33. e6+ 1-0
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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: interesting correspondence position

Post by Dann Corbit »

Stockfish is certainly enamored with Rg3:

Searching: 1rr3k1/5qpp/2b5/3pPp1P/2nQ4/1p1N3R/PP2N3/1K1R4 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

Code: Select all

 1   -1.88   00:00    4836  Nef4
 2   -2.02   00:00   50648  axb3 Rxb3
 3   -1.46   00:00   96869  a3 Qc7 Nb4 Qxe5 Qxe5 Nxe5 Nd4
 4   -1.05   00:00  144619  a3 Be8 Nb4 f4 Nxf4
 5   -0.61   00:00  170129  a3 Ba4 Nb4 Nb6 Rc3
 6   -0.65   00:00  191527  a3 Qe7 Nb4 Rxb4 axb4 Qxb4
 7   -0.38   00:00  268892  h6 Ba4 Ka1 g5 Rg1 g4 e6
 8   -0.51   00:00  321310  a3 Qe6 Nef4 Qe7 Nb4 Qxe5 Qxe5 Nxe5
 9   -0.45   00:00  409105  a3 Qc7 Nb4 Qxe5 h6 Qxd4 Nxd4 Bd7 Rg3
10   -0.59   00:00  624244  h6 Bb5 e6 Qc7 Rc1 Nd2+ Ka1 Ra8 Qxg7+ Qxg7 Rxc8+ Rxc8 hxg7
11   -0.28   00:00  907000  h6 Qe7 e6 bxa2+ Ka1 Na5 Kxa2 Nc4 Qxg7+ Qxg7 hxg7 Ba4 Rg1 Bc2
12   -0.22   00:00   1134K  a3 Qe7 h6 g5 Nb4 Qxe5 Rh5 g4 Rg5+ Kh8 Qxe5+ Nxe5 Rxf5 Nf3 Nxd5
13   +0.93   00:00   2562K  h6 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 g6 Ndf4 d4 Rc1 d3 Nxd3 Be4 Rxc8+ Rxc8 Kxa2
14   +0.76   00:00   2628K  h6 Qe7 a3 Be8 Nb4 Qxe5 Nxd5 Qxd4 Nxd4 Rb7 hxg7 Rxg7 Rh4 Kh8 Nf6
15   +0.57   00:00   2965K  h6 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 Ba4 Rg1 Rb1+ Rxb1 axb1=B Kxb1 g5
16   +0.67   00:00   5163K  h6 g6 e6 Qc7 Ka1 Ra8 Nb4 Qe5 a3 Qxd4 Nxd4 Bb7 Nxb3 Kf8 Nxd5 Ra6 Nf6 Rd6
17   +0.93   00:00   8828K  h6 g6 a3 Qc7 e6 Bb5 Rc1 Nd2+ Ka1 Qe7 Ndf4 Bxe2 Rxc8+ Rxc8 Nxe2 Ne4 Rxb3 Ng5 Re3 Ne4 Qxd5 Rd8 Qe5 Rd1+ Ka2
18   +1.17   00:01  14428K  h6 g6 e6 Qc7 Rc1 Be8 a3 Ra8 Ndf4 Qa7 Rd1 Bc6 Qxa7 Rxa7 Nd4 Bb7 Rxb3 Kf8 Rg3 Nd6 Nxg6+ hxg6 Rxg6 Ke7
19   +1.00   00:02  22934K  h6 bxa2+ Ka1 g6 e6 Qb7 b3 Qe7 Nef4 Rxb3 Nxg6 Rb1+ Rxb1 axb1=Q+ Kxb1 hxg6 h7+ Qxh7 Rxh7 Kxh7 e7 Nd2+ Kb2 Ne4 Nf4 Rb8+ Kc1 Rc8 Qe5 Be8+ Kb2
20   +0.99   00:02  23032K  h6 bxa2+ Ka1 g6 e6 Qb7 b3 Qe7 Nef4 Rxb3 Nxg6 Rb1+ Rxb1 axb1=Q+ Kxb1 hxg6 h7+ Qxh7 Rxh7 Kxh7 Kc1 Nd6 Kb2 Rb8+ Kc2 Ne4 Nb4 Ba4+ Kd3 Kh6 Nxd5
21   +0.38   00:05  59092K  h6 Be8 hxg7 Qc7 Ka1 Na3 bxa3 Qc2 Nb2 Qxe2 axb3 Qe4 Ka2 Rc2 Qxd5+ Qxd5 Rxd5 Re2 e6 Bg6 b4 f4 Kb3 Rxe6 Nd3 Re3 Rxe3 fxe3 Kc3
22   +0.35   00:06  68740K  h6 Be8 e6 bxa2+ Ka1 Qf6 hxg7 Qxd4 Nxd4 Bg6 b3 Na3 Nf4 Kxg7 Kxa2 Nc2 Nxd5 Nxd4 Rxd4 f4 Nxf4 Bf5 Re3 Ra8+ Ra4
23   +2.07   00:22 242213K  Rg3 h6 Nef4 Rc7 Rdg1 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 d4 Ne6 Rb1+ Rxb1 axb1=Q+ Kxb1 Re7 Nef4 Bb5 Kb2
24   +1.95   00:36 397306K  Rg3 h6 a3 Rc7 Nef4 Qe7 Rdg1 Nxa3+ bxa3 Qxa3 Qb2 Qxb2+ Kxb2 Ra7 Nc1 d4 Ne6 Rbb7 Nxd4 Be4 Rxb3 Rc7 Rb8+ Kh7 Ncb3 Re7 e6 Reb7 Rxb7 Rxb7
25   +2.17   00:49 545269K  Rg3 h6 e6 Qb7 a3 Rc7 Nb4 Qb6 Nf4 Rcb7 Qxb6 Rxb6 Rc3 Rc8 Nxc6 Rbxc6 Rxb3 Rd6 Rd4 Re8 Rb5 Kf8 Rbxd5 Rxd5 Rxd5 Ke7 Rxf5 Rb8 Rf7+ Kd6 Kc2 Rxb2+ Kc3
26   +2.25   01:06 737526K  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Bb7 e6 Nd6 Nbxd5 Bxd5 Nxd5 Ne4 Ne7 Nxg3 Nxc8 Qxe6 h6 Nh5 Qd8+ Qg8 Qxg8+ Kxg8 Rd8+ Kf7 Nd6+ Ke6 Rxb8 Kxd6 hxg7 Nxg7 Rxb3 f4 a4 Ne6 a5 Nc7 Rc3
27   +2.16   01:07 748573K  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Nd6 Nbxd5 Rg8 e7 Bxd5 Nxd5 Qe6 Rgg1 Qe4+ Qxe4 Nxe4 Ne3 f4 Nf5 Rge8 Rge1 g6 hxg6 hxg6 Nh4 Nf6 Nxg6+ Kg7 Nxf4 Kf7 Nd3
28   +2.16   01:13 815804K  Rg3 h6 e6 Qb7 a3 Rc7 Nb4 Qb6 Nf4 Rbc8 Nxc6 Qxd4 Rxd4 Rxc6 Rxb3 Rd6 Rc3 Nb6 Rxd5 Rxd5 Rxc8+ Nxc8 Nxd5 Kf8 b4 Ne7 Nf4 Nc6 b5 Nd8 Ng6+ Ke8 e7 Nb7 Kc2 Na5
29   +2.43   01:56   1285M  Rg3 h6 e6 Qe7 axb3 Na3+ bxa3 Rxb3+ Kc2 Ba4+ Kd2 Rxd3+ Rxd3 Bxd1 Kxd1 Qxe6 Nf4 Qe4 Qxd5+ Qxd5 Rxd5 Ra8 Rxf5 Rxa3 Ng6 Ra8 Ke2 Re8+ Kf3 Rb8 Kf2 Ra8 Ke3 Re8+ Kf4 Rb8 Rd5 Kh7 Kf5 Rb1 Nf4
30   +2.43   02:17   1516M  Rg3 h6 e6 Qe7 axb3 Na3+ bxa3 Rxb3+ Kc2 Ba4+ Kd2 Rxd3+ Rxd3 Bxd1 Kxd1 Qxe6 Qxd5 Qxd5 Rxd5 Ra8 Rxf5 Rxa3 Nf4 Kh7 Ke2 Ra2+ Kf3 Ra3+ Kg4 Ra4 Rb5 Ra1 Ng6 Ra4+ Kf5 Ra2 Nf8+ Kg8 Ne6 Rf2+ Kg4 Rf6 Rb8+ Kf7 Nd4 Rf1 Nf3 Ra1
31   +2.45   02:53   1911M  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Nd6 Nbxd5 Bxd5 Nxd5 Ne8 Rdg1 Rb7 e7 Rd7 a4 f4 Rg5 Nf6 Qxf6 Qxf6 Nxf6 Rxe7 Ng4 Rf8 Rf1 Re4 a5 Ra4 h6 g6 Ne5 Ra8 Nd7 R8xa5 Rxa5 Rxa5 Rxf4
32   +2.54   05:15   3493M  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Qf6 Qxf6 gxf6 Rxb3 Ne5 Ka2 Kg7 h6+ Kf8 Nbxd5 Rxb3 Kxb3 Bxd5+ Rxd5 Rb8+ Ka2 Ke7 b4 Rg8 Rb5 Rg4 Rb7+ Kd6 Rb6+ Nc6 b5 Rxf4 Rxc6+ Kd5 Rc7 Kxe6 Rxh7 Rf2+ Kb3 Rf3+ Kb4 Re3
33   +2.72   05:52   3916M  Rg3 Qe6 Nef4 Qh6 a3 Bb5 e6 Kh8 Nxd5 Nxa3+ bxa3 Bxd3+ Rgxd3 Qxe6 Nf4 Qe4 Qxe4 fxe4 Re3 Rc2 Rxb3 Rcc8 Rxb8 Rxb8+ Kc2 Kg8 Rd7 e3 Re7 Rc8+ Kb3 Rb8+ Ka2 Rf8 Ne6 Rf2+ Kb3 g6 hxg6 hxg6 Nd4 g5
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: interesting correspondence position

Post by Dann Corbit »

Finished searching

Code: Select all

Searching: 1rr3k1/5qpp/2b5/3pPp1P/2nQ4/1p1N3R/PP2N3/1K1R4 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -1.88   00:00    4836  Nef4 
 2   -2.02   00:00   50648  axb3 Rxb3 
 3   -1.46   00:00   96869  a3 Qc7 Nb4 Qxe5 Qxe5 Nxe5 Nd4 
 4   -1.05   00:00  144619  a3 Be8 Nb4 f4 Nxf4 
 5   -0.61   00:00  170129  a3 Ba4 Nb4 Nb6 Rc3 
 6   -0.65   00:00  191527  a3 Qe7 Nb4 Rxb4 axb4 Qxb4 
 7   -0.38   00:00  268892  h6 Ba4 Ka1 g5 Rg1 g4 e6 
 8   -0.51   00:00  321310  a3 Qe6 Nef4 Qe7 Nb4 Qxe5 Qxe5 Nxe5 
 9   -0.45   00:00  409105  a3 Qc7 Nb4 Qxe5 h6 Qxd4 Nxd4 Bd7 Rg3 
10   -0.59   00:00  624244  h6 Bb5 e6 Qc7 Rc1 Nd2+ Ka1 Ra8 Qxg7+ Qxg7 Rxc8+ Rxc8 hxg7 
11   -0.28   00:00  907000  h6 Qe7 e6 bxa2+ Ka1 Na5 Kxa2 Nc4 Qxg7+ Qxg7 hxg7 Ba4 Rg1 Bc2 
12   -0.22   00:00   1134K  a3 Qe7 h6 g5 Nb4 Qxe5 Rh5 g4 Rg5+ Kh8 Qxe5+ Nxe5 Rxf5 Nf3 Nxd5 
13   +0.93   00:00   2562K  h6 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 g6 Ndf4 d4 Rc1 d3 Nxd3 Be4 Rxc8+ Rxc8 Kxa2 
14   +0.76   00:00   2628K  h6 Qe7 a3 Be8 Nb4 Qxe5 Nxd5 Qxd4 Nxd4 Rb7 hxg7 Rxg7 Rh4 Kh8 Nf6 
15   +0.57   00:00   2965K  h6 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 Ba4 Rg1 Rb1+ Rxb1 axb1=B Kxb1 g5 
16   +0.67   00:00   5163K  h6 g6 e6 Qc7 Ka1 Ra8 Nb4 Qe5 a3 Qxd4 Nxd4 Bb7 Nxb3 Kf8 Nxd5 Ra6 Nf6 Rd6 
17   +0.93   00:00   8828K  h6 g6 a3 Qc7 e6 Bb5 Rc1 Nd2+ Ka1 Qe7 Ndf4 Bxe2 Rxc8+ Rxc8 Nxe2 Ne4 Rxb3 Ng5 Re3 Ne4 Qxd5 Rd8 Qe5 Rd1+ Ka2 
18   +1.17   00:01  14428K  h6 g6 e6 Qc7 Rc1 Be8 a3 Ra8 Ndf4 Qa7 Rd1 Bc6 Qxa7 Rxa7 Nd4 Bb7 Rxb3 Kf8 Rg3 Nd6 Nxg6+ hxg6 Rxg6 Ke7 
19   +1.00   00:02  22934K  h6 bxa2+ Ka1 g6 e6 Qb7 b3 Qe7 Nef4 Rxb3 Nxg6 Rb1+ Rxb1 axb1=Q+ Kxb1 hxg6 h7+ Qxh7 Rxh7 Kxh7 e7 Nd2+ Kb2 Ne4 Nf4 Rb8+ Kc1 Rc8 Qe5 Be8+ Kb2 
20   +0.99   00:02  23032K  h6 bxa2+ Ka1 g6 e6 Qb7 b3 Qe7 Nef4 Rxb3 Nxg6 Rb1+ Rxb1 axb1=Q+ Kxb1 hxg6 h7+ Qxh7 Rxh7 Kxh7 Kc1 Nd6 Kb2 Rb8+ Kc2 Ne4 Nb4 Ba4+ Kd3 Kh6 Nxd5 
21   +0.38   00:05  59092K  h6 Be8 hxg7 Qc7 Ka1 Na3 bxa3 Qc2 Nb2 Qxe2 axb3 Qe4 Ka2 Rc2 Qxd5+ Qxd5 Rxd5 Re2 e6 Bg6 b4 f4 Kb3 Rxe6 Nd3 Re3 Rxe3 fxe3 Kc3 
22   +0.35   00:06  68740K  h6 Be8 e6 bxa2+ Ka1 Qf6 hxg7 Qxd4 Nxd4 Bg6 b3 Na3 Nf4 Kxg7 Kxa2 Nc2 Nxd5 Nxd4 Rxd4 f4 Nxf4 Bf5 Re3 Ra8+ Ra4 
23   +2.07   00:22 242213K  Rg3 h6 Nef4 Rc7 Rdg1 Qe7 a3 Nxa3+ bxa3 Qxa3 Qb2 Qa2+ Qxa2 bxa2+ Ka1 d4 Ne6 Rb1+ Rxb1 axb1=Q+ Kxb1 Re7 Nef4 Bb5 Kb2 
24   +1.95   00:36 397306K  Rg3 h6 a3 Rc7 Nef4 Qe7 Rdg1 Nxa3+ bxa3 Qxa3 Qb2 Qxb2+ Kxb2 Ra7 Nc1 d4 Ne6 Rbb7 Nxd4 Be4 Rxb3 Rc7 Rb8+ Kh7 Ncb3 Re7 e6 Reb7 Rxb7 Rxb7 
25   +2.17   00:49 545269K  Rg3 h6 e6 Qb7 a3 Rc7 Nb4 Qb6 Nf4 Rcb7 Qxb6 Rxb6 Rc3 Rc8 Nxc6 Rbxc6 Rxb3 Rd6 Rd4 Re8 Rb5 Kf8 Rbxd5 Rxd5 Rxd5 Ke7 Rxf5 Rb8 Rf7+ Kd6 Kc2 Rxb2+ Kc3 
26   +2.25   01:06 737526K  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Bb7 e6 Nd6 Nbxd5 Bxd5 Nxd5 Ne4 Ne7 Nxg3 Nxc8 Qxe6 h6 Nh5 Qd8+ Qg8 Qxg8+ Kxg8 Rd8+ Kf7 Nd6+ Ke6 Rxb8 Kxd6 hxg7 Nxg7 Rxb3 f4 a4 Ne6 a5 Nc7 Rc3 
27   +2.16   01:07 748573K  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Nd6 Nbxd5 Rg8 e7 Bxd5 Nxd5 Qe6 Rgg1 Qe4+ Qxe4 Nxe4 Ne3 f4 Nf5 Rge8 Rge1 g6 hxg6 hxg6 Nh4 Nf6 Nxg6+ Kg7 Nxf4 Kf7 Nd3 
28   +2.16   01:13 815804K  Rg3 h6 e6 Qb7 a3 Rc7 Nb4 Qb6 Nf4 Rbc8 Nxc6 Qxd4 Rxd4 Rxc6 Rxb3 Rd6 Rc3 Nb6 Rxd5 Rxd5 Rxc8+ Nxc8 Nxd5 Kf8 b4 Ne7 Nf4 Nc6 b5 Nd8 Ng6+ Ke8 e7 Nb7 Kc2 Na5 
29   +2.43   01:56   1285M  Rg3 h6 e6 Qe7 axb3 Na3+ bxa3 Rxb3+ Kc2 Ba4+ Kd2 Rxd3+ Rxd3 Bxd1 Kxd1 Qxe6 Nf4 Qe4 Qxd5+ Qxd5 Rxd5 Ra8 Rxf5 Rxa3 Ng6 Ra8 Ke2 Re8+ Kf3 Rb8 Kf2 Ra8 Ke3 Re8+ Kf4 Rb8 Rd5 Kh7 Kf5 Rb1 Nf4 
30   +2.43   02:17   1516M  Rg3 h6 e6 Qe7 axb3 Na3+ bxa3 Rxb3+ Kc2 Ba4+ Kd2 Rxd3+ Rxd3 Bxd1 Kxd1 Qxe6 Qxd5 Qxd5 Rxd5 Ra8 Rxf5 Rxa3 Nf4 Kh7 Ke2 Ra2+ Kf3 Ra3+ Kg4 Ra4 Rb5 Ra1 Ng6 Ra4+ Kf5 Ra2 Nf8+ Kg8 Ne6 Rf2+ Kg4 Rf6 Rb8+ Kf7 Nd4 Rf1 Nf3 Ra1 
31   +2.45   02:53   1911M  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Nd6 Nbxd5 Bxd5 Nxd5 Ne8 Rdg1 Rb7 e7 Rd7 a4 f4 Rg5 Nf6 Qxf6 Qxf6 Nxf6 Rxe7 Ng4 Rf8 Rf1 Re4 a5 Ra4 h6 g6 Ne5 Ra8 Nd7 R8xa5 Rxa5 Rxa5 Rxf4 
32   +2.54   05:15   3493M  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Qf6 Qxf6 gxf6 Rxb3 Ne5 Ka2 Kg7 h6+ Kf8 Nbxd5 Rxb3 Kxb3 Bxd5+ Rxd5 Rb8+ Ka2 Ke7 b4 Rg8 Rb5 Rg4 Rb7+ Kd6 Rb6+ Nc6 b5 Rxf4 Rxc6+ Kd5 Rc7 Kxe6 Rxh7 Rf2+ Kb3 Rf3+ Kb4 Re3 
33   +2.72   05:52   3916M  Rg3 Qe6 Nef4 Qh6 a3 Bb5 e6 Kh8 Nxd5 Nxa3+ bxa3 Bxd3+ Rgxd3 Qxe6 Nf4 Qe4 Qxe4 fxe4 Re3 Rc2 Rxb3 Rcc8 Rxb8 Rxb8+ Kc2 Kg8 Rd7 e3 Re7 Rc8+ Kb3 Rb8+ Ka2 Rf8 Ne6 Rf2+ Kb3 g6 hxg6 hxg6 Nd4 g5 
34   +2.77   07:27   4982M  Rg3 h6 axb3 Rxb3 e6 Qf8 Rxg7+ Qxg7 Rg1 Rb7 Rxg7+ Rxg7 b3 Nd2+ Kb2 Ne4 Nef4 Be8 Nb4 Rgc7 Qe5 d4 Qxd4 Nc3 Qd6 Kh7 e7 Bf7 Ne6 Nd1+ Qxd1 Bxe6 Nd5 Rc2+ Qxc2 Rxc2+ Kxc2 Bf7 e8=Q Bxe8 Nf6+ Kg7 Nxe8+ Kf7 Nd6+ Ke6 
35   +2.81   14:48   9982M  Rg3 Rc7 Nef4 h6 axb3 Rxb3 Rdg1 Qe8 e6 g5 Rxg5+ hxg5 Rxg5+ Kh7 Qf6 Nxb2 Qxf5+ Kh6 Rg6+ Kh7 Rg2+ Kh6 Nxb2 Rcb7 Qf6+ Kh7 Kc1 Rxb2 Qf5+ Kh6 Rxb2 Rxb2 Qf6+ Kh7 Qxb2 Qf8 Qb1+ Kg8 Qg6+ Kh8 Qg5 Qa3+ Kd2 Qb2+ Ke1 Be8 Ng6+ Bxg6 Qxg6 Qe5+ Kf2 Qf4+ Kg2 d4 h6 Qe5 h7 Qe2+ Kg3 Qe3+ Kg4 Qg1+ Kf5 Qf2+ Ke5 Qe2+ Kd6 Qa6+ Ke7 Qb7+ Ke8 
36   +2.67   16:59  11470M  Rg3 Qe6 Nef4 Qh6 a3 Kh8 Nb4 Ba8 e6 Qf6 Qxf6 gxf6 Rxb3 Ne5 Ka2 Kg7 Rg3+ Kf8 Nbxd5 Bxd5+ Nxd5 Rc2 Rb3 Rxb3 Kxb3 Rc8 a4 Rb8+ Kc3 Rc8+ Kb4 f4 a5 f3 a6 f2 Ka4 Nc4 Rf1 Nxb2+ Kb5 Rb8+ Kc6 Nd3 a7 Ra8 Kb7 
37   +2.93   21:24  14465M  Rg3 Rc7 Nef4 h6 Rdg1 Qe7 Rxg7+ Qxg7 Rxg7+ Rxg7 Ng6 Nd2+ Ka1 Ne4 Ndf4 Kh7 axb3 Rc7 Kb1 Rbc8 Nxd5 Rd7 Nge7 Nd2+ Qxd2 Rxe7 Qf4 Rf7 Qc1 Bb7 Qd2 Bxd5 Qxd5 Rg7 b4 Rf8 e6 f4 Qd6 Kg8 e7 Re8 Qxh6 Rgxe7 Qxf4 Re1+ Ka2 R8e7 Qg5+ Kh7 Kb3 R1e6 b5 Rf7 Qd5 
Nodes: 14465701986
Nodes/second: 11266000
Best move: Rg3
Ponder move: Rc7
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Top
Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: interesting correspondence position

Post by Dann Corbit »

Komodo likes Rg3, but score is about half that of SF

Code: Select all

Analysis of Q:\jdart.epd   
2018-06-18 12:59:52 PM Level: 900 Seconds
Analyzing engine: Komodo-12.1.1-64bit

 1                      
    Avoid move: 
    Best move (Komodo-12.1.1-64bit): Rh3-g3
    Not found in: 15:00
     21+	00:09	  88,435,227	9,649,717	+0.91	Rg3 Qf8 a3
     21+	00:11	 108,286,242	9,726,026	+0.99	Rg3 Qf8 Nef4
     21+	00:11	 110,480,065	9,721,361	+1.10	Rg3 Qe7 Rdg1
     21	00:13	 129,276,449	9,715,807	+1.10	Rg3 Qe7 Rdg1 g6 e6 Be8 hxg6 h5 Ndf4 bxa2+ Ka1 Qb7 Nxd5 Qxb2+ Qxb2 Rxb2 Nef4 Rb1+ Rxb1 axb1Q+ Kxb1 h4 Ne7+ Kg7 Nxf5+ Kf6 g7 Bg6 Rxg6+ Kxf5 g8Q Rxg8 Rxg8 Kxf4
     22+	00:15	 151,350,839	9,714,481	+1.16	Rg3 Qe7 Rdg1
     22-	00:16	 160,962,038	9,728,755	+1.12	Rg3 Qc7
     22-	00:16	 163,829,304	9,733,787	+1.01	Rg3 Qc7
     22	00:17	 173,411,361	9,747,660	+1.04	Rg3 Qc7 Rdg1 Kh8 Rxg7 Qb6 a3 Qxd4 Nxd4 Bb5 Nxb5 Rxb5 Rf7 Rb6 Rxf5 Rbc6 Rf7 Re6 Rgg7 Rh6 Rg5 Rg8 Rxg8+ Kxg8 Rf5 Re6 Nf4 Rxe5 Rxe5 Nxe5 Nxd5
     23-	00:18	 184,693,442	9,750,411	+0.98	Rg3 Qc7
     23+	00:19	 193,622,393	9,766,493	+1.02	Rg3 Qc7 Rdg1
     23+	00:21	 210,836,560	9,774,403	+1.13	Rg3 Qe6 Nef4
     23+	00:23	 229,277,623	9,796,354	+1.28	Rg3 Qb7 Rxg7+
     23-	00:29	 287,687,397	9,802,044	+1.18	Rg3 Qe6
     23+	00:30	 295,699,040	9,803,766	+1.32	Rg3 Qe6 Nef4
     23	00:31	 312,393,048	9,807,679	+1.42	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Rc7 Qxf6 gxf6 Ka1 Rbc8 Ndf4 Ne5 Rxb3 Rc4 Rc3 Re8 Ka2 Bc6 Rxc4 dxc4 Nd4 Be4 Nb5 Re7 Nd6 Bd3 Rg3 Be4 h6
     24-	00:32	 321,336,172	9,793,867	+1.36	Rg3 Qe6
     24-	00:33	 328,546,563	9,801,222	+1.28	Rg3 Qe6
     24-	00:37	 369,017,862	9,825,746	+1.02	Rg3 Qe6
     24+	00:38	 375,687,823	9,817,987	+1.12	Rg3 Qe6 Nef4
     24	00:39	 390,387,812	9,790,202	+1.32	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Bb7 Ka1 Qf6 Qxf6 gxf6 Nb4 d4 Rxb3 Be4 Ka2 Rd8 e7 Re8 Rxd4 Ne5 Rd6 Rxe7 Nbd5 Rxb3 Kxb3 Rd7 Rxd7 Nxd7 h6 Kg8
     25-	00:45	 444,583,794	9,718,591	+1.26	Rg3 Qe6
     25+	00:48	 464,661,338	9,677,050	+1.30	Rg3 Qe6 Nef4
     25+	00:49	 481,229,283	9,677,047	+1.41	Rg3 Qe6 Nef4
     25-	00:50	 487,711,155	9,674,701	+1.34	Rg3 Qe6
     25	00:59	 576,978,676	9,679,953	+1.22	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Bb7 Ka1 Qf6 Qxf6 gxf6 Nb4 d4 Rxb3 Be4 Ka2 Rd8 e7 Re8 Rxd4 Na5 Rc3 Rxe7 Rd6 Nb7 Rxf6 Rd7 Nbd3 Re8 h6 Rd6 Rxd6 Nxd6 Rc7 Bxd3 Nxd3
     26+	01:04	 622,807,903	9,688,412	+1.28	Rg3 Qe6 Nef4
     26+	01:09	 676,057,451	9,680,765	+1.36	Rg3 Qe6 Nef4
     26	01:11	 691,570,812	9,681,903	+1.34	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Rc7 Ka1 Qxd4 Nxd4 Rf8 Nf4 Nd6 Rxb3 Kg8 Rbg3 Ne4 Rd3 Bb7 Rdd1 Ba8 b3 Rf6
     27	01:27	 849,080,626	9,735,583	+1.32	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Rc7 Ka1 Qxd4 Nxd4 Rf8 Nf4 Nd6 Rxb3 Kg8 Rbg3 Ne4 Rd3 Bb7 Ka2 Rf6 b4 Nd6 b5 Rc4 Kb2 Ra4 e7
     28+	01:41	 997,660,793	9,797,219	+1.38	Rg3 Qe6 Nef4
     28+	01:52	1,111,519,451	9,846,330	+1.46	Rg3 Qe6 Nef4
     28-	01:54	1,122,688,996	9,848,777	+1.41	Rg3 Qe6
     28+	02:05	1,241,764,606	9,879,862	+1.48	Rg3 Qe6 Nef4
     28-	02:10	1,289,975,241	9,889,967	+1.38	Rg3 Qe6
     28+	02:20	1,394,097,862	9,892,247	+1.52	Rg3 Qe6 Nef4
     28	02:27	1,451,471,704	9,895,993	+1.42	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Qf6 Qxf6 gxf6 Nb4 Rxb4 axb4 d4 Rxb3 Be4+ Ka2 Ra8+ Ra3 Nxa3 bxa3 d3 h6 Kg8 Nxd3 Bxd3 Rxd3 Re8 Kb3 Rxe6 a4 f4 b5 Re7 b6
     29-	02:37	1,558,403,814	9,912,861	+1.36	Rg3 Qe6
     29+	02:53	1,735,141,892	10,002,590	+1.40	Rg3 Qe6 Nef4
     29+	03:00	1,804,975,575	10,012,698	+1.51	Rg3 Qe6 Nef4
     29-	03:01	1,821,300,947	10,013,874	+1.44	Rg3 Qe6
     29	03:10	1,902,900,842	10,012,568	+1.51	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Rb7 Qxf6 gxf6 Ka1 Nd6 Ndf4 Ne4 Rd3 Rg7 Rxg7 Kxg7 Rxb3 Kh6 Nd4 Kg5 Rf3 Nd2 Rc3 Re8 Nfe2 Ne4 Rf3 Kxh5 Rf1 Kg6 Rg1+ Ng5 Nf4+ Kg7 b4 Kf8 Kb2 Ke7
     30-	03:26	2,054,530,966	9,964,977	+1.45	Rg3 Qe6
     30-	03:36	2,158,963,017	9,993,544	+1.37	Rg3 Qe6
     30+	03:56	2,356,353,312	9,979,645	+1.42	Rg3 Qe6 Nef4
     30+	04:12	2,527,430,785	10,007,371	+1.57	Rg3 Qe6 Nef4
     30-	04:19	2,602,181,942	10,012,268	+1.47	Rg3 Qe6
     30	04:44	2,850,655,358	10,025,171	+1.34	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Qxd4 Nxd4 Rg8 Rg5 Rbe8 Rxf5 g6 hxg6 Rxg6 Rxg6 hxg6 Rf6 Kg7 Rf7+ Kg8 Rc7 Nd6 Nf4 Nf5 Nxb3 d4 Nd2 Ne3 Nxg6 Nd5 Rd7 Rxe6
     31+	05:07	3,094,236,853	10,053,104	+1.40	Rg3 Qe6 Nef4
     31+	05:38	3,412,284,747	10,087,400	+1.48	Rg3 Rc7 Nef4
     31+	05:52	3,553,990,485	10,093,042	+1.59	Rg3 Qe6 Nef4
     31	06:49	4,142,274,415	10,114,501	+1.67	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Qxd4 Nxd4 Rc7 Ka1 Nd6 Ne5 Rcb7 Nd7 Rg8 Nxb3 d4 Nxd4 Rc7 b3 Ne4 Rd3 Re8 b4 Nd6 Nc5 Rce7 a4 Kg8 Kb2 Be4 Rc3 Bd5 a5 f4
     32-	07:31	4,563,264,279	10,117,101	+1.61	Rg3 Qe6
     32+	08:05	4,914,455,391	10,120,863	+1.65	Rg3 Qe6 Nef4
     32-	08:29	5,158,541,814	10,126,302	+1.60	Rg3 Qe6
     32-	08:59	5,471,885,188	10,149,626	+1.45	Rg3 Qe6
     32+	09:19	5,673,351,127	10,145,949	+1.55	Rg3 Qe6 Nef4
     32	09:35	5,842,590,110	10,146,697	+1.50	Rg3 Qe6 Nef4 Qh6 a3 Kh8 e6 Ba8 Rdg1 Qf6 Ne2 Rb7 Ka1 Nd6 Qxf6 gxf6 Ndf4 Ne4 Rd3 Nf2 Rf3 Ne4 Rc1 Rc4 Nxd5 Rxc1+ Nxc1 Kg7 Nf4 Kf8 Nxb3 Rg7 Nd4 Rg4 Nxf5 Rg5 Nd4 Bd5 Rf1 Nd2 Rc1 Nb3+ Nxb3 Bxb3 Rc8+ Ke7 Rc7+
     33-	10:03	6,132,740,246	10,165,330	+1.44	Rg3 Qe6
     33-	10:18	6,294,819,229	10,172,762	+1.36	Rg3 Qe6
     33-	11:44	7,188,993,467	10,210,701	+1.25	Rg3 Qe6
     33+	11:50	7,253,273,493	10,211,089	+1.32	Rg3 Qe6 Nef4
     33-	12:24	7,617,599,311	10,233,097	+1.22	Rg3 Qe6
     33+	12:46	7,843,228,429	10,233,453	+1.36	Rg3 Qe6 Nef4
     33-	13:08	8,078,511,215	10,245,539	+1.16	Rg3 Qe6
     33+	13:58	8,586,858,471	10,235,042	+1.44	Rg3 Qe6 Nef4
   2018-06-18 1:14:54 PM, Time for this analysis: 00:15:00, Rated time: 15:00

0 of 1 matching moves
2018-06-18 1:14:55 PM, Total time: 12:15:03 AM
Rated time: 15:00 = 900 Seconds
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: interesting correspondence position

Post by Dann Corbit »

Houdini Tactical, about the same:

Code: Select all

Analysis of Q:\jdart.epd   
2018-06-18 12:59:52 PM Level: 529 Seconds
Analyzing engine: Houdini 6 Tactical 1

 1                      
    Avoid move: 
    Best move (Houdini 6 Tactical 1): Rh3-g3
    Not found in: 15:00
    21/60+	01:49	1,438,569,275	13,196,000	+1.38	Rg3
    21/60+	01:53	1,489,459,746	13,191,000	+1.45	Rg3
    21/60-	01:55	1,516,411,632	13,192,000	+1.38	Rg3 Rb7
    21/60+	02:01	1,598,826,409	13,193,000	+1.46	Rg3
    21/60-	02:02	1,606,609,283	13,193,000	+1.34	Rg3 Rb7
    21/60	02:05	1,653,695,308	13,204,000	+1.29	Rg3 Rb7 Nef4 Qc7 Ne6 Qb6 Nec5 Qa5 a3 Ra7 Nb4 Ba8 Nxb3 Qb6 Qxb6 Nxb6 Nd4 f4 Rg4 Nc4 Rxf4 Nxe5 Nf5
    21/60	02:05	1,657,965,782	13,203,000	+1.29	Rg3 Rb7 Nef4 Qc7 Ne6 Qb6 Nec5 Qa5 a3 Ra7 Nb4 Ba8 Nxb3 Qb6 Qxb6 Nxb6 Nd4 f4 Rg4 Nc4 Rxf4 Nxe5 Nf5
    22/60+	02:19	1,836,123,581	13,202,000	+1.36	Rg3
    22/60-	02:28	1,953,369,482	13,220,000	+1.29	Rg3 Rb7
    22/60-	02:33	2,027,573,044	13,224,000	+1.03	Rg3 Rb7
    22/60+	02:46	2,199,142,426	13,216,000	+1.15	Rg3
    22/60-	02:49	2,236,399,328	13,216,000	+0.99	Rg3 Rb7
    22/60+	02:59	2,355,203,374	13,181,000	+1.20	Rg3
    22/60	03:03	2,416,954,690	13,177,000	+1.03	Rg3 Rb7 Nef4 Qc7 Ne6 Qb6 Nec5 Qa5 a3 Qa7 h6 g6 Rg2 Re7 Re1 Ba8 Nxb3 Qb6 Qxb6 Nxb6 e6 Nc4
    22/60	03:03	2,417,178,146	13,177,000	+1.03	Rg3 Rb7 Nef4 Qc7 Ne6 Qb6 Nec5 Qa5 a3 Qa7 h6 g6 Rg2 Re7 Re1 Ba8 Nxb3 Qb6 Qxb6 Nxb6 e6 Nc4
    23/60+	03:15	2,578,391,673	13,183,000	+1.10	Rg3
    23/60+	03:41	2,920,238,520	13,194,000	+1.17	Rg3
    23/60+	05:14	4,157,035,211	13,232,000	+1.63	Rg3
    23/60-	05:40	4,513,164,925	13,252,000	+1.46	Rg3 Rc7
    23/60	05:55	4,710,749,787	13,264,000	+1.53	Rg3 Rc7 Nef4 h6 a3 Qe7 Nc5 Qxe5 Qxe5 Nxe5 Na6 Rbb7 Nxc7 Rxc7 Rxb3 Ba4 Rb8+ Kf7 b3 Bc6 Kb2 d4 Rc1 Re7 Rd8 Be4 Rxd4 g5 hxg6+ Nxg6 Nxg6 Kxg6 Rg1+ Kf6 Rd6+ Re6 Rxe6+
    23/60	05:55	4,711,732,929	13,264,000	+1.53	Rg3 Rc7 Nef4 h6 a3 Qe7 Nc5 Qxe5 Qxe5 Nxe5 Na6 Rbb7 Nxc7 Rxc7 Rxb3 Ba4 Rb8+ Kf7 b3 Bc6 Kb2 d4 Rc1 Re7 Rd8 Be4 Rxd4 g5 hxg6+ Nxg6 Nxg6 Kxg6 Rg1+ Kf6 Rd6+ Re6 Rxe6+
    24/60+	06:25	5,116,328,868	13,282,000	+1.60	Rg3
    24/60-	07:28	5,946,188,814	13,265,000	+1.53	Rg3 h6
    24/60+	07:56	6,306,341,114	13,256,000	+1.60	Rg3
    24/60-	08:20	6,633,654,485	13,267,000	+1.51	Rg3 h6
    24/60+	08:46	6,979,860,381	13,276,000	+1.63	Rg3
    24/60-	09:14	7,363,574,700	13,281,000	+1.47	Rg3 h6
    24/60	09:33	7,617,105,193	13,291,000	+1.54	Rg3 h6 Nef4 Kh8 e6 Qf6 Qxf6 gxf6 Rdg1 Rg8 Ng6+ Kh7 Ne7 Rxg3 Rxg3 Be8 Nxf5 d4 axb3 Rxb3 Nxd4 Rb8 Kc2 Bxh5 Nf4 Be8 b3
    24/60	09:34	7,625,379,945	13,290,000	+1.54	Rg3 h6 Nef4 Kh8 e6 Qf6 Qxf6 gxf6 Rdg1 Rg8 Ng6+ Kh7 Ne7 Rxg3 Rxg3 Be8 Nxf5 d4 axb3 Rxb3 Nxd4 Rb8 Kc2 Bxh5 Nf4 Be8 b3
    25/60-	10:32	8,421,297,641	13,321,000	+1.47	Rg3 Rb7
    25/60+	11:30	9,202,762,054	13,332,000	+1.54	Rg3
    25/60-	12:03	9,654,064,538	13,343,000	+1.47	Rg3 h6
    25/60	12:34	10,066,643,796	13,354,000	+1.52	Rg3 h6 Nef4 Kh8 e6 Qf6 Qxf6 gxf6 Rdg1 Rg8 Ng6+ Kh7 Ne7 Rxg3 Rxg3 Be8 Nf4 d4 axb3 Nd2+ Kc2 Nf1 Rg1 Ne3+ Kd2 Rxb3 Nfd5 Rxb2+ Kd3 Ng4 Nxf5
    25/60	12:34	10,067,820,357	13,354,000	+1.52	Rg3 h6 Nef4 Kh8 e6 Qf6 Qxf6 gxf6 Rdg1 Rg8 Ng6+ Kh7 Ne7 Rxg3 Rxg3 Be8 Nf4 d4 axb3 Nd2+ Kc2 Nf1 Rg1 Ne3+ Kd2 Rxb3 Nfd5 Rxb2+ Kd3 Ng4 Nxf5
    26/60+	14:17	11,480,459,157	13,387,000	+1.59	Rg3
   2018-06-18 1:30:20 PM, Time for this analysis: 00:15:00, Rated time: 15:00

0 of 1 matching moves
2018-06-18 1:30:21 PM, Total time: 12:30:29 AM
Rated time: 15:00 = 900 Seconds
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: interesting correspondence position

Post by Paloma »

jdart wrote: ↑Mon Jun 18, 2018 1:45 am 1rr3k1/5qpp/2b5/3pPp1P/2nQ4/1p1N3R/PP2N3/1K1R4 w - - 0 30

Here White played 30. Rg3. This is actually a pawn offer, because Black could play bxa2 and White can't reply Kxa2 (.. Ba4 then is winning).

White was soon winning after .. Qe7. Possibly Black has a better defense. Maybe he should have taken the pawn offer. 30. .. Qe6 also looks interesting. But in any case 30. Rg3 looks like the best move for White.

Stockfish and Houindi find Rg3 quickly, but Arasan gets stuck on 30. a3 (so does Fritz 15).

The game:

[Event "W-ch38 prel05 email"]
[Site "ICCF email"]
[Date "2014.03.20"]
[Round "?"]
[White "Dolya, Anatoly Leonidovich"]
[Black "Raessler, Arndt"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2379"]
[BlackElo "2284"]
[PlyCount "65"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4
Bc5 9. Qd2 O-O 10. O-O-O a6 11. Nb3 Be7 12. h4 b5 13. Kb1 Nb6 14. Qf2 Nc4 15.
Bc5 Rb8 16. g4 a5 17. Bxe7 Qxe7 18. g5 Bb7 19. Rh3 a4 20. Nc5 N6a5 21. Bxc4
Nxc4 22. Nd3 Rfd8 23. Qd4 Rdc8 24. f5 exf5 25. h5 Bc6 26. g6 b4 27. gxf7+ Qxf7
28. Ne2 b3 29. cxb3 axb3 30. Rg3 Qe7 31. Rxg7+ Kxg7 32. Rg1+ Kf7 33. e6+ 1-0
25...Bc6 is the deciding mistake, and 26...b4 is also not good.
Instead 25...Bc6 Stockfish finds better move 25...Ba8 0.00/56
26...b4 -- Better is 26...Rf8 (+1.55/47 for white)
After ...b4 white is playing gxf7+ (with +2.70/47) and winning.
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