Author: Richard Pijl
Date: 08:15:59 10/05/05
When browsing the site of my old chess club (http://www.svpromotie.nl, site in
Dutch) I found a nice position with a ditto piece sacrifice.
[Event "Promotie"]
[Site "?"]
[Date "2005.10.04"]
[Round "?"]
[White "Boerkamp, H."]
[Black "Broekman, W."]
[Result "0-1"]
[ECO "C00"]
[PlyCount "44"]
[EventType "swiss"]
1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 d4 5. bxc5 Bxc5 6. Ba3 Qe7 7. Bxc5 Qxc5 8. c3
Nc6 9. cxd4 Nxd4 10. Qa4+
[D]r1b1k1nr/pp3ppp/4p3/2q1P3/Q2n4/5N2/P2P1PPP/RN2KB1R b kqKQ -
This position occurs in the Chesslab.com database 4 times, and in all four cases
black played the natural move 10..Nc6. But in this game black played a new move,
a piece sacrifice: 10..Bd7. The Baron, on a single CPU Xeon 2.8 likes it, but
doesn't give it a positive score within two hours.
ply time nodes score pv
8(14)& 0:00.50 136691 -1.03 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-c7
(Qd4xa7)
8(14). 0:00.86 233340 -1.03 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-c7
(Qd4xa7)
9(16)& 0:02.84 724042 -1.16 Nd4-c6 Nb1-c3 Ke8-f8 Nc3-e4 Qc5-b6
Ne4-d6 f7-f6 Bf1-c4 (f6xe5)
9(16). 0:03.19 823119 -1.16 Nd4-c6 Nb1-c3 Ke8-f8 Nc3-e4 Qc5-b6
Ne4-d6 f7-f6 Bf1-c4 (f6xe5)
10(17)& 0:06.80 1699973 -1.28 Nd4-c6 Nb1-c3 Ng8-e7 Nc3-e4 Qc5-b4
Qa4xb4 Nc6xb4 Bf1-b5 Ke8-f8 Nf3-d4
(Ne7-d5)
10(17). 0:09.02 2317908 -1.28 Nd4-c6 Nb1-c3 Ng8-e7 Nc3-e4 Qc5-b4
Qa4xb4 Nc6xb4 Bf1-b5 Ke8-f8 Nf3-d4
(Ne7-d5)
11(18)& 0:20.23 5040261 -1.30 Nd4-c6 Nb1-c3 Ng8-h6 Nc3-e4 Qc5-e7
Ne4-d6 Ke8-f8 d2-d4 Nh6-f5 Nd6xf5 e6xf5
11(18)+ 0:21.72 5478502 -0.93 Bc8-d7 (Qa4xd4) (Qc5-c1) (Ke1-e2) (Bd7-b5)
(d2-d3) (Ra8-d8) (Nb1-d2) (Bb5xd3)
(Ke2-e3) (Qc1-a3)
(Bf1xd3) (Rd8xd4) (Nf3xd4) (Ng8-e7)
11(18)& 0:22.94 5828433 -0.47 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-a3
Qd4xd8 Ke8xd8 Bf1xd3 (Ng8-h6)
11(18). 0:24.22 6211390 -0.47 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-a3
Qd4xd8 Ke8xd8 Bf1xd3 (Ng8-h6)
12(19)- 0:43.30 11150784 -0.82 Bc8-d7 (Qa4xd4) (Qc5-c1) (Ke1-e2) (Bd7-b5)
(d2-d3) (Ra8-d8) (Nb1-d2) (Bb5xd3)
(Ke2-e3) (Qc1-a3)
(Qd4xd8) (Ke8xd8) (Bf1xd3) (Ng8-h6)
(Ra1-b1)
12(19)& 0:49.59 12960829 -1.19 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-a3
Qd4xd8 Ke8xd8 Bf1xd3 Qa3-c5 Ke3-e2
12(19). 1:07.39 17204033 -1.19 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-a3
Qd4xd8 Ke8xd8 Bf1xd3 Qa3-c5 Ke3-e2
13(21)& 1:53.70 28646093 -1.40 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Qd4xd3 Qc1xa1
Qd3-c2 Rd8-d5 Nd2-b3 Rd5xe5 Nf3xe5
13(22)& 3:25.36 50604766 -1.37 Nd4-c6 Nb1-c3 Ke8-f8 Nc3-e4 Qc5-b4
Qa4xb4 Nc6xb4 Ra1-b1 a7-a5 Ne4-d6 Ng8-e7
Bf1-c4 Nb4-c2 Ke1-e2
13(22). 3:39.92 54390467 -1.37 Nd4-c6 Nb1-c3 Ke8-f8 Nc3-e4 Qc5-b4
Qa4xb4 Nc6xb4 Ra1-b1 a7-a5 Ne4-d6 Ng8-e7
Bf1-c4 Nb4-c2 Ke1-e2
14(22)& 9:18.29 135829091 -1.31 Nd4-c6 Nb1-c3 Ng8-h6 Nc3-e4 Qc5-e7
Ne4-d6 Ke8-f8 Ra1-c1 Nh6-f5 Rc1xc6 b7xc6
Qa4xc6 Ra8-b8 Nd6xc8
14(23)+ 9:59.27 146527501 -1.02 Bc8-d7 (Qa4xd4) (Qc5-c1) (Ke1-e2) (Bd7-b5)
(d2-d3) (Ra8-d8) (Nb1-d2) (Qc1-a3)
14(23)& 10:14.16 150698935 -1.14 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Qf4-c4 a7-a6
(Bf1-e2) (Bc2xd1)
14(23). 10:37.79 156665561 -1.14 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Qf4-c4 a7-a6
(Bf1-e2) (Bc2xd1)
15(25)& 12:22.21 183154932 -1.08 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-c7
Qd4xa7 Qc7-c3 Bf1xd3 Qc3xd3 Ke3-f4 Qd3-f5
Kf4-g3 Qf5-g6 Kg3-h3
15(25). 18:23.56 267721731 -1.08 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Bb5xd3 Ke2-e3 Qc1-c7
Qd4xa7 Qc7-c3 Bf1xd3 Qc3xd3 Ke3-f4 Qd3-f5
Kf4-g3 Qf5-g6 Kg3-h3
16(26)& 25:17.11 363350473 -0.91 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-h4 Qa3-c3
Ra1-b1 Bb5xd3 Ke2-e1 Bd3xb1 Bf1-b5 Rd8-d7
Bb5xd7 Ke8xd7 Qh4-a4 Kd7-e7
16(26). 31:50.71 456750590 -0.91 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-h4 Qa3-c3
Ra1-b1 Bb5xd3 Ke2-e1 Bd3xb1 Bf1-b5 Rd8-d7
Bb5xd7 Ke8xd7 Qh4-a4 Kd7-e7
17(28)+ 35:01.32 507514365 -0.56 Bc8-d7 (Qa4xd4) (Qc5-c1) (Ke1-e2) (Bd7-b5)
(d2-d3) (Ra8-d8) (Nb1-d2) (Qc1-a3)
(Qd4-h4) (Qa3-c3)
(Ra1-b1) (Bb5xd3) (Ke2-e1) (Bd3xb1)
(Bf1-b5)
17(29)& 42:36.87 621245400 -0.12 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Bf1-e2 Bc2xd1
Be2xd1 Ng8-e7 Bd1-a4
17(29). 50:45.90 741810107 -0.12 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Bf1-e2 Bc2xd1
Be2xd1 Ng8-e7 Bd1-a4
18(31)- 127:45.07 1859776211 -0.47 Bc8-d7 (Qa4xd4) (Qc5-c1) (Ke1-e2)
(Bd7-b5)
(d2-d3) (Ra8-d8) (Nb1-d2) (Qc1-a3)
(Qd4-f4) (Qa3-b2)
(Ra1-d1) (Bb5xd3) (Ke2-e1) (Bd3-c2)
(Bf1-e2) (Bc2xd1)
(Be2xd1) (Ng8-e7)
18(31)& 160:19.03 -1970385592 -0.52 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Bf1-e2 Bc2xd1
Be2xd1 Ng8-e7 Bd1-a4 Ne7-c6
18(31). 192:43.96 -1482204971 -0.52 Bc8-d7 Qa4xd4 Qc5-c1 Ke1-e2 Bd7-b5
d2-d3 Ra8-d8 Nb1-d2 Qc1-a3 Qd4-f4 Qa3-b2
Ra1-d1 Bb5xd3 Ke2-e1 Bd3-c2 Bf1-e2 Bc2xd1
Be2xd1 Ng8-e7 Bd1-a4 Ne7-c6
Remainder of the game:
10..Bd7 11. Qxd4 Qc1+ 12. Ke2 Bb5+ 13. Ke3 Bxf1 14. Rxf1? Qxf1 15. Na3 Qa6 16.
Nc4 Ne7 17. Qe4 O-O 18. Ng5 Nf5+ 19. Kf3 h6 20. Nh3 Rfd8 21. Nd6 Nxd6 22. exd6
Rxd6 0-1
Richard.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.