Author: Drexel,Michael
Date: 15:45:13 10/09/05
Go up one level in this thread
On October 05, 2005 at 11:15:59, Richard Pijl wrote: >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. It is not a new move. The move happened already in the game: [Event "BEL-chT 9900"] [Site "Antwerp"] [Date "1999.10.??"] [Round "3"] [White "Deman, Stefaan"] [Black "Haberkorn, Danny"] [Result "0-1"] [ECO "C00"] [PlyCount "50"] [EventDate "1999.10.08"] 1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 d4 5. bxc5 Bxc5 6. Ba3 Qa5 7. Bxc5 Qxc5 8. c3 Nc6 9. cxd4 Nxd4 10. Qa4+ Bd7 11. Qxd4 Qc1+ 12. Ke2 Bb5+ 13. Ke3 Bxf1 14. Qc3 Qd1 15. Rxf1 Qxf1 16. Na3 Qa6 17. Qc5 Ne7 18. Nb5 O-O 19. Nc7 Nf5+ 20. Kf4 Qa4+ 21. d4 Rac8 22. Rc1 Rfd8 23. Rc4 Qd7 24. Qa5 Ne7 25. Qc3 Rxc7 0-1 In both games white didn´t play the best continuation 13...Bxf1 14.Qd3! Michael 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.
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