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Subject: Re: Some Maastricht testpositions

Author: Gian-Carlo Pascutto

Date: 02:55:04 07/16/02

Go up one level in this thread


On July 15, 2002 at 15:44:55, Gian-Carlo Pascutto wrote:

>[D]r2qrbk1/5pp1/p1bp3p/1p2p3/1P2P1Q1/2P4P/P1B2PP1/R3RNK1 b - - 0 21
>
>Sjeng played d5, the same move was played by Ponomariov earlier
>this year in Linares against Adams. Alex Kure criticised it as being
>premature (citing Adams). Sjeng got into a worse position and Brutus
>slowly worked its way through a win.
>
>How long does your favorite program need to avoid it?

New game
r2qrbk1/5pp1/p1bp3p/1p2p3/1P2P1Q1/2P4P/P1B2PP1/R3RNK1 b - - 0 1

Analysis by Sjeng 12.14 Maastricht:

1...d5 2.a4
  ³  (-0.38)   Depth: 2   00:00:00
1...d5 2.a4 Bd7
  ³  (-0.56)   Depth: 3   00:00:00
1...d5 2.a4 Bd7
  ³  (-0.56)   Depth: 3   00:00:00
1...d5 2.Ng3 d4 3.Rad1
  ³  (-0.49)   Depth: 4   00:00:00
1...d5 2.Ng3 d4 3.Rad1
  ³  (-0.49)   Depth: 4   00:00:00
1...d5 2.exd5 Bxd5 3.Ne3 Be7 4.Nxd5 Qxd5
  ³  (-0.37)   Depth: 5/17   00:00:00
1...Bd7 2.Qf3 Be7 3.a4 Qc7 4.axb5 axb5
  ³  (-0.43)   Depth: 5/19   00:00:00
1...Bd7 2.Qf3 Be7 3.a4 Qc7 4.axb5 axb5
  ³  (-0.43)   Depth: 5/19   00:00:00
1...Bd7 2.Qh5 Be7 3.Bb3 Rf8 4.Nd2
  ³  (-0.35)   Depth: 6/19   00:00:00  62kN
1...Bd7 2.Qh5 Be7 3.Bb3 Rf8 4.Nd2
  ³  (-0.35)   Depth: 6/20   00:00:00  178kN
1...Bd7 2.Qf3 Be7 3.a4 Qc7 4.axb5 axb5 5.Nd2
  ³  (-0.29)   Depth: 7/20   00:00:00  228kN
1...Be7 2.Ne3 Bd7 3.Nf5 Bg5 4.Rad1 Rc8 5.Rxd6 Rxc3
  ³  (-0.30)   Depth: 7/23   00:00:01  514kN
1...Be7 2.Ne3 Bd7 3.Nf5 Bg5 4.Rad1 Rc8 5.Rxd6 Rxc3
  ³  (-0.30)   Depth: 7/23   00:00:01  557kN
1...Be7 2.Ne3 Bg5 3.a4 Qc7 4.Qf3 bxa4 5.Nd5 Bxd5 6.exd5
  =  (-0.20)   Depth: 8/23   00:00:02  914kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Bxc6 Qxc6 5.Rac1 Rad8 6.Qf5
  ³  (-0.29)   Depth: 8/23   00:00:03  1945kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Bxc6 Qxc6 5.Rac1 Rad8 6.Qf5
  ³  (-0.29)   Depth: 8/25   00:00:04  2557kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Qg3 Bxe4 5.Nd2 Qd3 6.Nxe4
  ³  (-0.34)   Depth: 9/25   00:00:07  4583kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Qg3 Bxe4 5.Nd2 Qd3 6.Nxe4
  ³  (-0.34)   Depth: 9/27   00:00:09  5780kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Bxc6 Qxc6 5.Re3 Qd5 6.Rae1 Rad8 7.Qf5
  ³  (-0.28)   Depth: 10/27   00:00:14  10203kN
1...d5 2.exd5 Qxd5 3.Be4 Qc4 4.Bxc6 Qxc6 5.Re3 Qd5 6.Rae1 Rad8 7.Qf5
  ³  (-0.28)   Depth: 10/32   00:00:20  14033kN
1...d5 2.exd5 Qxd5 3.Red1 h5 4.Qg5 Be7 5.Rxd5 Bxg5 6.Rd6 Rac8 7.Rad1
  ³  (-0.28)   Depth: 11/32   00:00:41  28470kN
1...d5 2.exd5 Qxd5 3.Red1 h5 4.Qg5 Be7 5.Rxd5 Bxg5 6.Rd6 Rac8 7.Rad1
  ³  (-0.28)   Depth: 11/33   00:00:53  35842kN
1...d5 2.exd5 Qxd5 3.Be4 Qe6 4.a4 Qxg4 5.hxg4 Rac8 6.axb5 axb5 7.Bxc6 Rxc6 8.Ra5
Rb6
  =  (-0.10)   Depth: 12/33   00:02:30  102968kN
1...Qd7 2.Qxd7 Bxd7 3.Bb3 Bc6 4.a4 Be7 5.Bd5 Bxd5 6.exd5 f5 7.axb5 axb5 8.Ra5
Rab8
  =  (-0.11)   Depth: 12/36   00:03:28  143040kN
1...Qd7 2.Qxd7 Bxd7 3.Bb3 Bc6 4.a4 Be7 5.Bd5 Bxd5 6.exd5 f5 7.axb5 axb5 8.Ra5
Rab8
  =  (-0.11)   Depth: 12/36   00:04:27  183854kN

>
>[D]r2q1rk1/p2bbppp/1pn1p3/4P3/2pP1N2/2P5/P1B2PPP/1RBQ1RK1 w - - 0 15
>
>Brutus played Qh5 and went on to win after the double piece
>sacritice. I had a discussion with Tony Werten, who claimed
>you had to search really really deep to see the compensation.
>I think you just need good kingsafety :)
>
>How long to get Qh5, a winning score and see the double piece sac
>(Nxg6 Bxg6) and KEEP it?

New game
r2q1rk1/p2bbppp/1pn1p3/4P3/2pP1N2/2P5/P1B2PPP/1RBQ1RK1 w - - 0 1

Analysis by Sjeng 12.14 Maastricht:

1.Re1 a6
  =  (0.23)   Depth: 2   00:00:00
1.Qe2 Na5
  =  (0.24)   Depth: 2   00:00:00
1.Qe2 Na5 2.f3
  ²  (0.37)   Depth: 3   00:00:00
1.Qh5 h6 2.f3
  ²  (0.48)   Depth: 3   00:00:00
1.Qh5 h6 2.f3
  ²  (0.48)   Depth: 3   00:00:00
1.Qh5 h6 2.Qe2 Na5
  ²  (0.38)   Depth: 4   00:00:00
1.Qh5 h6 2.Qe2 Na5
  ²  (0.38)   Depth: 4   00:00:00
1.Qh5 h6 2.Qe2 Na5 3.f3
  ²  (0.51)   Depth: 5/14   00:00:00
1.Qh5 h6 2.Qe2 Na5 3.f3
  ²  (0.51)   Depth: 5/16   00:00:00
1.Qh5 h6 2.Bd2 Qc7 3.Qe2 Na5
  ²  (0.43)   Depth: 6/16   00:00:00  112kN
1.Qh5 h6 2.Bd2 Qc7 3.Qe2 Na5
  ²  (0.43)   Depth: 6/20   00:00:00  346kN
1.Qh5 h6 2.Bd2 a6 3.f3 b5 4.Ne2
  ²  (0.50)   Depth: 7/20   00:00:01  418kN
1.Qg4 f5 2.Qe2 Rc8 3.d5 exd5 4.Nxd5 Be6
  ²  (0.57)   Depth: 7/20   00:00:01  784kN
1.Nh5 Kh8 2.Qg4 Rg8 3.Bxh7 Nxe5 4.dxe5 Kxh7 5.Qxc4
  ±  (0.79)   Depth: 7/26   00:00:02  1132kN
1.Nh5 Kh8 2.Qg4 Rg8 3.Bxh7 Nxe5 4.dxe5 Kxh7 5.Qxc4
  ±  (0.79)   Depth: 7/26   00:00:02  1268kN
1.Nh5 g6 2.Qg4 Rc8 3.Bh6 Re8 4.f3 f5
  ±  (0.79)   Depth: 8/26   00:00:03  2290kN
1.Nh5 g6 2.Qg4 Rc8 3.Bh6 Re8 4.f3 f5
  ±  (0.79)   Depth: 8/29   00:00:05  3411kN
1.Nh5 g6 2.Qg4 Kh8 3.Bh6 Rg8 4.Ng3 Bf8 5.Bg5
  ±  (0.80)   Depth: 9/29   00:00:06  4318kN
1.Qh5
  ±  (1.29)   Depth: 9/29   00:00:11  7831kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.Qg6+ Kh8
8.Bxf8 Bxe5 9.Bh6
  +-  (1.57)   Depth: 9/29   00:00:14  9828kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.Qg6+ Kh8
8.Bxf8 Bxe5 9.Bh6
  +-  (1.57)   Depth: 9/29   00:00:15  10656kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.Bxf8 Bxe5
8.Bh6 Bf6 9.f3
  +-  (1.53)   Depth: 10/29   00:00:22  15615kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.Bxf8 Bxe5
8.Bh6 Bf6 9.f3
  +-  (1.53)   Depth: 10/32   00:00:26  18362kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.exf6 Qxf6
8.Bxf8 Rxf8 9.Qb5 e5 10.Qxc4+
  +-  (1.76)   Depth: 11/32   00:01:03  44080kN
1.Qh5 g6 2.Nxg6 fxg6 3.Bxg6 hxg6 4.Qxg6+ Kh8 5.Qh5+ Kg8 6.Bh6 Bf6 7.exf6 Qxf6
8.Bxf8 Rxf8 9.Qb5 e5 10.Qxc4+
  +-  (1.76)   Depth: 11/34   00:01:10  49746kN

(Pascutto, Gent 16.07.2002)

>[D]r4rk1/5p1p/p1pb1n2/1p3bp1/3PR3/1BP2PPq/PP1NQ2P/R1B3K1 b - - 0 18
>
>Junior-Sjeng. Again Adams and Ponomariov in Linares 2002! Black
>must not accept the rook sacrifice. How long to avoid it?

Not in 10 mins.

[D]3rk2r/1b2bppp/p1qppn2/1p6/4P3/PBN3Q1/1PP2PPP/R1B1R1K1 w k - 0 14
>
>Sjeng played Qxg7 and Junior answered from book. I think I can
>omit the rest of the story.
>
>How long to avoid Qxg7?


3rk2r/1b2bppp/p1qppn2/1p6/4P3/PBN3Q1/1PP2PPP/R1B1R1K1 w k - 0 1

Analysis by Sjeng 12.14 Maastricht:

14.Qxg7 Rg8
  +-  (2.12)   Depth: 2   00:00:00
14.Qxg7 Rg8 15.Qh6
  +-  (1.93)   Depth: 3   00:00:00
14.Qxg7 Rg8 15.Qh6
  +-  (1.93)   Depth: 3   00:00:00
14.Qxg7 Rg8 15.Qh6 Qc5
  +-  (1.70)   Depth: 4   00:00:00
14.Qxg7 Rg8 15.Qh6 Qc5
  +-  (1.70)   Depth: 4   00:00:00
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4
  +-  (1.86)   Depth: 5/13   00:00:00
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4
  +-  (1.86)   Depth: 5/17   00:00:00
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4 Qc5
  +-  (1.63)   Depth: 6/17   00:00:00  65kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4 Qc5
  +-  (1.63)   Depth: 6/20   00:00:00  147kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4 Rg4 17.Qf3
  +-  (1.83)   Depth: 7/20   00:00:00  203kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qf4 Rg4 17.Qf3
  +-  (1.83)   Depth: 7/20   00:00:01  396kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qh3 h5 17.Bf4 Qc5
  +-  (1.64)   Depth: 8/20   00:00:01  534kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qh3 h5 17.Bf4 Qc5
  +-  (1.64)   Depth: 8/24   00:00:02  1216kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.f3 Bf6
  +-  (1.72)   Depth: 9/24   00:00:03  1784kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.f3 Bf6
  +-  (1.72)   Depth: 9/27   00:00:05  3206kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qh3 Qd7 17.Bd2 h5 18.Rad1 Rc8
  +-  (1.65)   Depth: 10/27   00:00:07  4850kN
14.Qxg7 Rg8 15.Qh6 Rg6 16.Qh3 Qd7 17.Bd2 h5 18.Rad1 Rc8
  +-  (1.65)   Depth: 10/29   00:00:15  11023kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.Red1 Bf6 19.Bb6 Rc8
  +-  (1.61)   Depth: 11/29   00:00:21  15163kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.Red1 Bf6 19.Bb6 Rc8
  +-  (1.61)   Depth: 11/39   00:01:28  58264kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.Rad1 Bf6 19.Bd2 Bd4 20.h3
  +-  (1.63)   Depth: 12/39   00:01:51  75754kN
14.Qxg7 Rg8 15.Qh6 Qc5 16.Be3 Qh5 17.Qxh5 Nxh5 18.Rad1 Bf6 19.Bd2 Bd4 20.h3
  +-  (1.63)   Depth: 12/42   00:04:24  190529kN
14.Qxg7
  ±  (1.13)   Depth: 13/48   00:07:26  315146kN
14.Qxg7 Rg8 15.Qh6 d5 16.exd5 Nxd5 17.Bxd5 Rxd5 18.Ne4 Rd1 19.Rxd1 Qxe4 20.f3
Rxg2+ 21.Kh1 Rxh2+ 22.Kxh2 Qe2+ 23.Kh1 Qxd1+
  +-  (1.45)   Depth: 13/48   00:35:02  1453924kN
14.Qxg7 Rg8 15.Qh6 d5 16.exd5 Nxd5 17.Bxd5 Rxd5 18.Ne4 Rd1 19.Rxd1 Qxe4 20.f3
Rxg2+ 21.Kh1 Rxh2+ 22.Kxh2 Qe2+ 23.Kh1 Qxd1+
  +-  (1.45)   Depth: 13/48   00:35:03  1453924kN

(Pascutto, Gent 16.07.2002)


>
>[D]2rq1rk1/pb1pn1pp/1p2p3/2pn1p2/3P2P1/P1PBPN1P/1P1NQP1R/1K1R4 b - - 0 15
>
>GM Alterman - Sjeng Anti-Human
>
>Black plays Nxc3!!
>
>Anyone else find this?

New game
2rq1rk1/pb1pn1pp/1p2p3/2pn1p2/3P2P1/P1PBPN1P/1P1NQP1R/1K1R4 b - - 0 1

Analysis by Sjeng 12.14 Maastricht:

1...cxd4 2.Nxd4 f4
  ³  (-0.58)   Depth: 2   00:00:00
1...cxd4 2.Nxd4 Rxc3 3.Nxe6
  µ  (-0.77)   Depth: 3   00:00:00
1...cxd4 2.Nxd4 Rxc3 3.Nxe6
  µ  (-0.77)   Depth: 3   00:00:00
1...cxd4 2.Nxd4 f4 3.N2f3 a5
  ³  (-0.55)   Depth: 4   00:00:00
1...cxd4 2.Nxd4 f4 3.N2f3 a5
  ³  (-0.55)   Depth: 4   00:00:00
1...cxd4 2.Nxd4 Rxc3 3.gxf5 Rxa3 4.Nxe6
  µ  (-0.78)   Depth: 5/17   00:00:00
1...cxd4 2.Nxd4 Rxc3 3.gxf5 Rxa3 4.Nxe6
  µ  (-0.78)   Depth: 5/20   00:00:00
1...cxd4 2.Nxd4 f4 3.N2f3 Nc6 4.Nxc6 Rxc6 5.h4
  ³  (-0.39)   Depth: 6/20   00:00:00  269kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 fxg4
  ³  (-0.61)   Depth: 6/23   00:00:00  346kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 fxg4
  ³  (-0.61)   Depth: 6/23   00:00:01  404kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 d5 7.gxf5 exf5
  ³  (-0.45)   Depth: 7/23   00:00:01  535kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 d5 7.gxf5 exf5
  ³  (-0.45)   Depth: 7/26   00:00:03  1688kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 fxg4 6.Rc1 Na4+ 7.Kb3
  ³  (-0.63)   Depth: 8/26   00:00:04  1962kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 fxg4 6.Rc1 Na4+ 7.Kb3
  ³  (-0.63)   Depth: 8/26   00:00:06  3063kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 Qc7 7.Qc2 Qxc2+
8.Bxc2 Bxf3 9.Nxf3 fxg4
  ³  (-0.66)   Depth: 9/26   00:00:07  3820kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 Qc7 7.Qc2 Qxc2+
8.Bxc2 Bxf3 9.Nxf3 fxg4
  ³  (-0.66)   Depth: 9/30   00:00:11  6230kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 Qc7 7.Ka2 Bd5+
8.Kb1 Qc3
  ³  (-0.62)   Depth: 10/30   00:00:15  9073kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 Qc7 7.Ka2 Bd5+
8.Kb1 Qc3
  ³  (-0.62)   Depth: 10/33   00:00:32  20313kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 f4 7.exf4 Rxf4
8.Rh1 Bxf3 9.Nxf3 a5
  µ  (-0.74)   Depth: 11/33   00:00:45  29773kN
1...Nxc3+ 2.bxc3 Nd5 3.Kb2 cxd4 4.cxd4 Nc3 5.Qe1 Nxd1+ 6.Qxd1 f4 7.exf4 Rxf4
8.Rh1 Bxf3 9.Nxf3 a5
  µ  (-0.74)   Depth: 11/36   00:01:08  45532kN

(Pascutto, Gent 16.07.2002)



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