Author: Dann Corbit
Date: 10:46:10 08/02/04
Go up one level in this thread
On July 30, 2004 at 13:54:15, Jim Monaghan wrote:
>Hi,
>
>I would like some analysis help from the group with those of you with fast
>machines. I've posted 4 positions below in pgn format so you can simply copy and
>paste into your favourite engine. If you go up and down the solution tree you
>might spot a "hole" in the solution. My machine is simply too slow. The
>positions are fairly intricate. Thanks in advance.
>
>This one is a complex attack on the king.
>
>[D]5rk1/p1q1ppb1/3p2p1/3P1bBp/1pr4P/5PN1/PPPQ2P1/1KR4R b - -
>
>[Event "?"]
>[Site "?"]
>[Date "0000.??.??"]
>[Round "?"]
>[White "IQ.1027"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "5rk1/p1q1ppb1/3p2p1/3P1bBp/1pr4P/5PN1/PPPQ2P1/1KR4R b - -"]
>
>1... Bc3 2. Qe2 b3 3. axb3 (3. Nxf5 bxa2+ 4. Ka1 Rb4)
>3... Ra4 4. Nxf5 (4. bxc3 Qxc3 5. bxa4 Qb3+ 6. Ka1 Qxa4+)
>4... Qa5 5. Nxe7+ Kh7 6. bxa4 Rb8 7. Rcf1 Rxb2+ 8. Kc1 Rb1+
>*
>
>Interesting knight sac with the BK blocked in and weak dark squares.
>
>[D]2rq1rk1/pp1bnpbp/4p1p1/3pP1N1/3P2Q1/2PB4/P4PPP/R1B1R1K1 w - -
>
>[Event "?"]
>[Site "?"]
>[Date "0000.??.??"]
>[Round "?"]
>[White "IQ.1031"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "2rq1rk1/pp1bnpbp/4p1p1/3pP1N1/3P2Q1/2PB4/P4PPP/R1B1R1K1 w - -"]
>
>1. Nxh7 Kxh7 2. Qh4+ Kg8 3. Bg5 Re8 4. Re3 Rxc3 5. Rh3 Rxd3
>6. Qh7+ Kf8 7. Bf6 Nf5 8. Qh8+ *
>
>
>Transition to a won pawn ending. Does it work?
>
>[D]r2r4/pp3p2/4bkpp/8/7P/3B1P2/PP4P1/1K1R3R b - -
>
>[Event "?"]
>[Site "?"]
>[Date "0000.??.??"]
>[Round "?"]
>[White "IQ.1149"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "r2r4/pp3p2/4bkpp/8/7P/3B1P2/PP4P1/1K1R3R b - -"]
>
>1... Rxd3 2. Rxd3 Bf5 3. Rhd1 Rd8 4. Kc2 g5 5. hxg5+ Kxg5 6. g3 h5 7. Kc3 Rxd3+
>8. Rxd3 Bxd3 9. Kxd3 f5 10. Ke3 f4+ 11. Kf2 b5 *
>
>Another complex attack on the king.
>
>[D]1rb1r1k1/3n1ppp/p1p1p3/q3P3/7P/2N1Q1R1/PPP3P1/2KR1B2 w - -
>
>[Event "?"]
>[Site "?"]
>[Date "0000.??.??"]
>[Round "?"]
>[White "IQ.1182"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "1rb1r1k1/3n1ppp/p1p1p3/q3P3/7P/2N1Q1R1/PPP3P1/2KR1B2 w - -"]
>
>1. Rxd7 Bxd7 2. Bd3 h6 (2... g6 3. h5) (2... Rxb2 3. Kxb2 Rb8+ 4. Kc1)
>3. Qf4 Kf8 4. Rxg7 Kxg7 5. Qf6+ Kf8 (5... Kg8 6. Qxh6 Re7 7. Qh7+) 6. Bg6 *
>
>The advantages appear way down the tree. The question is whether there a better
>defense for the weaker side along the way in each of these four cases? Are the
>solutions correct and unique? Please puruse the lines and post your results.
Shredder 7.04 UCI on 2.2 GHz Athlon 64 bit:
Analysis from E:\jm.epd
7/30/2004 11:00:25 PM Level: 36000 Seconds
Analyzing engine: Shredder 7.04 UCI
1) Bc3; id "JM-complex
Searching move: Bg7-c3
Best move (Shredder 7.04 UCI): e7-e6
Not found in: 10:00:00
illegal command
2 00:00 1.26 b4b3 a2xb3
3- 00:00 1.01 b4b3 a2xb3 Rc4xc2 Ng3xf5 Rc2xd2 Rc1xc7 g6xf5
3 00:00 0.92 b4b3 a2xb3 Rc4d4 Ng3xf5 Rd4xd2 Bg5xd2
3 00:00 0.96 e7e6 Ng3xf5
4 00:00 0.96 e7e6 Ng3xf5
5 00:00 0.96 e7e6 Ng3xf5
6 00:00 0.96 e7e6 Ng3xf5
7 00:00 0.96 e7e6 Ng3xf5
8 00:00 0.96 e7e6 Ng3xf5
9 00:00 0.96 e7e6 Ng3xf5
10 00:00 0.96 e7e6 Ng3xf5 g6xf5
11 00:01 0.96 e7e6 Ng3xf5 g6xf5
12 00:03 0.96 e7e6 Ng3xf5 g6xf5 d5xe6 f7xe6
13 00:07 0.96 e7e6 Ng3xf5 Bg7c3 b2xc3 e6xf5
14 00:13 0.96 e7e6 Ng3xf5 Bg7c3 b2xc3 Qc7b8 c3xb4 Rc4xb4+ Qd2xb4
15- 01:12 0.71 e7e6 Ng3xf5 Rc4d4 Nf5xd4 e6xd5 Qd2xb4 Bg7xd4 Qb4xd4
Qc7xc2+ Kb1xc2 f7f6 Qd4xa7
15 02:29 0.70 e7e6 Ng3xf5 e6xf5 g2g4 f5xg4 f3xg4 Rc4xg4 Bg5h6 Bg7xh6
Qd2xh6 Qc7c4 Rh1f1 Rg4xh4 Rf1f2 Qc4xd5 Rc1e1 Rh4e4
16 07:36 0.91 e7e6 Ng3xf5 e6xf5 Qd2d3 a7a5 Rh1e1 Qc7c5 Bg5e3 Bg7d4 g2g3
Rf8c8 Qd3d2 a5a4 Be3xd4 Rc4xd4 Qd2h6 Qc5xd5
17 13:45 0.94 e7e6 Ng3xf5 e6xf5 Qd2d3 a7a5 Rh1e1 Qc7c5 Bg5e3 Bg7d4 g2g3
Rf8c8 Re1e2 Bd4xe3 Re2xe3 Qc5d4 Qd3xd4
18 34:52 1.03 e7e6 Ng3xf5 e6xf5 Rh1f1 Rf8c8 g2g4 f5xg4 f3xg4 Rc4xg4
Qd2f2 f7f5 Qf2d2 Qc7c4 Rc1e1 Qc4d4 Qd2xd4
19 1:32:23 1.20 e7e6 Ng3xf5 e6xf5 Qd2d3 a7a5 Rh1e1 Bg7e5 Re1e2 a5a4
Rc1e1 b4b3 c2xb3 a4xb3 Qd3xb3 Rf8b8 Qb3d3 Rc4b4
20 3:04:09 1.25 e7e6 Ng3xf5 e6xf5 Rh1f1 Rf8c8 g2g4 f5xg4 f3xg4 Rc4xg4
Rf1xf7 Kg8xf7 Qd2f2+ Kf7g8 Kb1a1 Qc7c4 Qf2xa7
21 8:37:58 1.37 e7e6 Ng3e4 Rf8c8 d5xe6 d6d5 Ne4f6+ Bg7xf6 Bg5xf6 Rc4xc2
Rc1xc2 Qc7xc2+ Qd2xc2 Bf5xc2+ Kb1c1 Bc2f5+ Kc1d2 Rc8c2+ Kd2e3 f7xe6 g2g3
7/31/2004 9:00:33 AM, Time for this analysis: 10:00:01, Rated time: 10:00:00
2) Nxh7; id "JM-knight
Searching move: Ng5xh7
Best move (Shredder 7.04 UCI): Ng5xh7
identical moves! Found in: 10:54
illegal command
2- 00:00 -1.99 Ng5xh7 Kg8xh7
2 00:00 -1.69 Ng5xh7 Kg8xh7
2+ 00:00 -0.52 Qg4h4 Bg7xe5
2+ 00:00 0.12 Qg4h4 Bg7xe5 d4xe5 Rc8xc3
2 00:00 0.12 Qg4h4 h7h5
2+ 00:00 0.24 Qg4h3 Bg7h6
2 00:00 0.54 Qg4h3 h7h5
2 00:00 0.62 Bc1d2 h7h6
3 00:00 0.62 Bc1d2 h7h6
4 00:00 0.62 Bc1d2 h7h6
5 00:00 0.62 Bc1d2 h7h6
6 00:00 0.62 Bc1d2 h7h6
7 00:00 0.62 Bc1d2 h7h6
8 00:00 0.62 Bc1d2 h7h6
9 00:00 0.62 Bc1d2 h7h6
10 00:01 0.62 Bc1d2 h7h6
11 00:01 0.62 Bc1d2 h7h6 Ng5f3
12 00:03 0.62 Bc1d2 h7h6 Ng5f3 Ne7f5 Bd3xf5 e6xf5
13 00:05 0.62 Bc1d2 h7h6 Ng5f3 Ne7f5 Bd3xf5 e6xf5 Ra1b1
14 00:08 0.62 Bc1d2 h7h6 Qg4h5
15 00:14 0.62 Bc1d2 h7h6 Ng5xe6 Bd7xe6 Qg4g5 h6xg5
16 00:26 0.62 Bc1d2 h7h6 Ng5xe6 Bd7xe6 Qg4g5
17 03:52 0.68 Bc1d2 a7a6 Qg4h3 h7h6 Ng5f3 h6h5 Nf3g5 Ne7f5 Bd3xf5 e6xf5
e5e6 f7xe6 Ng5xe6 Bd7xe6 Re1xe6 Rc8c6 Ra1e1
18 07:35 0.70 Bc1d2 h7h6 Ng5f3 Ne7f5 Ra1b1 h6h5 Qg4h3 b7b6 Re1c1 Bg7h6
Bd2xh6 Nf5xh6
18+ 10:54 0.71 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rf8e8 Re1e3 Bd7c6
18+ 12:51 1.06 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rf8e8 Re1e3 Bd7c6 Re3h3
Qd8c7 Qh4h7+ Kg8f8 Bg5h6 Bg7xh6 Qh7xh6+ Kf8g8
18 37:10 2.48 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3e2 Bd7a4 Be2d1 Ba4c2 Qh4f4 Bc2f5 Bd1b3
19 49:34 2.44 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3f1 Bd7a4 Re1e3 Rc3xe3 f2xe3
20 1:16:35 2.40 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3f1 Bd7a4 Re1e3 Rc3xe3 f2xe3
21 2:09:23 2.38 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3f1 Bd7a4 Re1e3 Rc3xe3 f2xe3
22 4:00:30 2.43 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3f1 Bd7a4 Re1e3 Bf8a3 Ra1e1 Ba3c1 Re3g3 Rc3xg3 Qh4xg3
23 7:31:35 2.45 Ng5xh7 Kg8xh7 Qg4h4+ Kh7g8 Bc1g5 Rc8xc3 Bg5xe7 Qd8c7
Be7xf8 Bg7xf8 Bd3f1 Bd7a4 Re1e3 Rc3xe3 f2xe3
7/31/2004 7:00:36 PM, Time for this analysis: 10:00:01, Rated time: 10:10:54
3) Rxd3; id "JM-pawn en
Searching move: Rd8xd3
Best move (Shredder 7.04 UCI): Ra8-c8
Not found in: 10:00:00
illegal command
2- 00:01 0.08 Kf6e5 Rh1e1+ Ke5d4
2 00:01 0.06 Kf6e5 Rh1e1+ Ke5d4
2 00:01 0.29 Ra8c8 g2g3
3 00:01 0.29 Ra8c8 g2g3
4 00:01 0.29 Ra8c8 g2g3
4+ 00:01 0.30 Be6f5 Bd3xf5 Kf6xf5 g2g4+ Kf5f4 Rh1h3
4 00:01 0.43 Be6f5 Bd3xf5 Kf6xf5 Rh1e1 Rd8xd1+ Re1xd1 Ra8c8
5 00:01 0.31 Be6f5 Bd3xf5 Kf6xf5 Rh1e1 Ra8c8 g2g4+ Kf5f4
5+ 00:01 0.32 Rd8d7 Bd3xg6 f7xg6
5 00:01 0.38 Rd8d7 Bd3e4 Ra8d8 Rd1xd7 Rd8xd7 Rh1c1
6 00:01 0.34 Rd8d7 Bd3b5 Rd7c7 g2g4 Ra8c8 Rh1e1
7 00:01 0.37 Rd8d7 Bd3e4 Ra8d8 Rd1xd7 Rd8xd7 g2g3 Kf6e5 Rh1c1
8 00:02 0.37 Rd8d7 Bd3e4 Ra8d8 Rd1xd7 Rd8xd7 Rh1c1 Kf6e5 g2g3 b7b6
9 00:02 0.37 Rd8d7 Bd3e4 Ra8d8 Rd1xd7 Rd8xd7 g2g4 b7b6 f3f4
10 00:02 0.36 Rd8d7 Bd3b5 Rd7d5 Rd1xd5 Be6xd5 Rh1d1 Ra8d8 Bb5c4 Bd5e4+
Kb1c1
11 00:03 0.33 Rd8d7 Bd3b5 Be6f5+ Kb1a1 Rd7xd1+ Rh1xd1 Ra8c8 g2g4 Bf5e6
Bb5d3 Kf6e5 Rd1e1+ Ke5d6 Bd3e4 b7b6
11+ 00:04 0.34 Rd8xd3 Rd1xd3 Be6f5 Rh1d1 Ra8d8 Kb1a1 Rd8xd3 g2g4
11 00:04 0.34 Rd8xd3 Rd1xd3 Be6f5 Rh1d1 Ra8d8 Kb1c2 Rd8c8+ Kc2b3 b7b6
12 00:05 0.20 Rd8xd3 Rd1xd3 Be6f5 Rh1d1 Ra8d8 Kb1c2 Rd8c8+ Kc2b3 Bf5xd3
Rd1xd3 g6g5 h4xg5+ h6xg5 Rd3d7
12+ 00:05 0.21 Rd8d7 Bd3b5 Be6f5+ Kb1a1 Rd7xd1+ Rh1xd1 Ra8c8 g2g4 Bf5e6
Bb5d3 Kf6e5 Rd1e1+ Ke5d6 Ka1b1
12 00:07 0.34 Rd8d7 b2b3 Ra8d8 Kb1c2 Rd7xd3 Rd1xd3 Be6f5 Rh1d1 Rd8c8+
Kc2d2 Bf5xd3 Kd2xd3 Rc8d8+ Kd3c2 Rd8xd1
13 00:10 0.24 Rd8d7 b2b3 Ra8d8 Kb1c2 Rd7c7+ Kc2b2 Be6f5 Bd3xf5 Kf6xf5
Rd1xd8 Rc7d7 Rd8xd7 Kf5f4
13+ 00:12 0.25 b7b6 g2g3 Ra8c8 Rh1e1 Rd8xd3 Rd1xd3 Be6f5 Re1e3
13 00:17 0.32 b7b6 g2g3 Ra8c8 Rd1d2 Rd8xd3 Rd2xd3 Be6f5 Rh1d1 h6h5 a2a3
Bf5xd3+ Rd1xd3 Kf6e6 Kb1a2
13+ 00:20 0.33 Ra8c8 b2b3
13 00:24 0.42 Ra8c8 Rh1e1 a7a5 Bd3e4 b7b5 g2g3 b5b4 f3f4 h6h5 Kb1a1
Rd8xd1+ Re1xd1 a5a4 Ka1b1 Be6f5
14 00:30 0.33 Ra8c8 g2g3 a7a5 Bd3e4 b7b6 a2a3 Kf6e7 Be4b7 Rd8xd1+ Rh1xd1
Rc8c7 Bb7a6 f7f5 Ba6e2 Be6b3 Rd1d2
15 00:47 0.32 Ra8c8 Bd3e4 b7b5 g2g3 b5b4 Rd1xd8 Rc8xd8 Rh1c1 Rd8d2 Rc1c7
Rd2g2 Rc7xa7 Rg2xg3 Be4c6
16 01:20 0.30 Ra8c8 g2g3 b7b6 Bd3e4 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
a2a3 Rc8h8 Kb1c2 Rh8h3 Rd1g1 Rh3h2+ Kc2c3 Be6c4
17 02:25 0.35 Ra8c8 g2g3 Rd8xd3 Rd1xd3 Be6f5 Rh1d1 Rc8c7 a2a3 Bf5xd3+
Rd1xd3 Kf6e5 Rd3d8 a7a5 Rd8a8 b7b6
18 04:16 0.34 Ra8c8 g2g3 b7b6 Bd3e4 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
a2a3 Rc8h8 Kb1c2 Rh8h3 g3g4 Kf6e5 Rd1e1
19 07:17 0.31 Ra8c8 g2g3 b7b6 Bd3e4 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
a2a3 Rc8h8 Kb1c2 Rh8h3 g3g4 Kf6e5 Rd1e1
20 25:29 0.37 Ra8c8 Bd3e4 b7b6 a2a3 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
Rd1e1 a7a5 Be4d3 Rc8c5 Re1xe6+ f7xe6 b2b4 a5xb4 a3xb4 Rc5c3 Bd3f5
21 40:56 0.35 Ra8c8 Bd3e4 b7b6 a2a3 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
Rd1e1 a7a5 Be4d3 Rc8c5 g2g3 a5a4
22 1:22:00 0.37 Ra8c8 Bd3e4 b7b6 a2a3 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
Rd1e1 a7a5 Be4d3 Rc8c5 g2g3 Rc5e5 Bd3e4 Be6f5 Kb1c2 g5g4 Kc2d2
23 2:23:44 0.34 Ra8c8 Bd3e4 b7b6 a2a3 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
Rd1e1 a7a5 Re1e2 Rc8c5 g2g3 Kf6e5 Be4c2+ Ke5d6 Re2d2+ Rc5d5 Bc2d3 f7f6 Kb1c2
24 6:07:59 0.33 Ra8c8 Bd3e4 b7b6 a2a3 Rd8xd1+ Rh1xd1 g6g5 h4xg5+ h6xg5
Rd1e1 a7a5 Re1e3 Rc8h8 Be4d3 Rh8h2 Re3e2 g5g4 Kb1c2 g4xf3 g2xf3 Rh2xe2+ Bd3xe2
Kf6e5
8/1/2004 5:00:38 AM, Time for this analysis: 10:00:01, Rated time: 20:10:54
4) Rxd7; id "JM-complex
Searching move: Rd1xd7
Best move (Shredder 7.04 UCI): Rd1-e1
Not found in: 10:00:00
illegal command
2 00:00 0.51 a2a3 Re8f8
3 00:00 0.51 a2a3 Re8f8
4 00:00 0.51 a2a3 Re8f8
5 00:00 0.51 a2a3 Re8f8
6 00:00 0.51 a2a3 Re8f8
7 00:00 0.51 a2a3 Re8f8
8 00:00 0.51 a2a3 Re8f8
9 00:00 0.51 a2a3 Re8f8
10 00:00 0.51 a2a3 Re8f8
11 00:00 0.51 a2a3 Re8f8
12 00:01 0.51 a2a3 Re8f8
13 00:04 0.51 a2a3 Re8f8
14 00:08 0.51 a2a3 Re8f8
15 02:24 0.40 a2a3 Re8f8 Qe3g5 g7g6 h4h5 Qa5xe5 Bf1xa6 Bc8xa6 Rd1xd7
Qe5e1+ Rd7d1 Rb8xb2
16 05:02 0.52 a2a3 Re8f8 Rd1e1 Qa5b6 Qe3xb6 Rb8xb6 Nc3a4 Rb6b8 Rg3d3
Rb8b5 Rd3xd7 Bc8xd7 Bf1xb5 c6xb5 Na4c5 Bd7c6 g2g4
17 12:55 0.57 a2a3 Kg8f8 Rd1e1 Qa5b6 Qe3xb6 Rb8xb6 Bf1d3 h7h6 Rg3f3
Kf8e7 Bd3c4 a6a5 Rf3d3 Nd7c5
18 29:18 0.60 a2a3 Kg8f8 Rd1e1 Qa5b6 Qe3xb6 Rb8xb6 Bf1d3 h7h6 Bd3c4
Rb6b8 Rg3d3 c6c5 Nc3a4 a6a5 Rd3d6
19 1:13:33 0.75 a2a3 Qa5xe5 Bf1xa6 Qe5xe3+ Rg3xe3 Nd7f6 Ba6xc8 Rb8xc8
a3a4 Nf6g4 Re3e2 f7f5 a4a5 Rc8a8 b2b4 Ra8b8 Nc3a2 Kg8f7
20 2:26:15 0.77 a2a3 Qa5xe5 Bf1xa6 Qe5xe3+ Rg3xe3 Nd7f6 Ba6xc8 Re8xc8
Nc3e4 Nf6xe4 Re3xe4 Kg8f8 b2b3 c6c5 Rd1d7 Kf8e8 Rd7a7
21 5:38:27 0.77 a2a3 Qa5xe5 Bf1xa6 Qe5xe3+ Rg3xe3 Nd7f6 Ba6e2 Kg8f8
Be2f3 Nf6d5 Nc3xd5 e6xd5 Re3c3 Re8e6 Rc3c5 Bc8a6 Bf3g4 Re6f6
21+ 7:40:29 0.78 Rd1e1 c6c5 Bf1d3 Nd7f8 Qe3g5 g7g6 Re1f1 Qa5b6 Nc3d1
8/1/2004 3:00:41 PM, Time for this analysis: 10:00:01, Rated time: 30:10:54
1 of 4 matching moves
8/1/2004 3:00:42 PM, Total time: 4:00:17 PM
Rated time: 30:10:54 = 108654 Seconds
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
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