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Subject: Re: Leiden Testposition

Author: Gian-Carlo Pascutto

Date: 02:45:39 06/05/02

Go up one level in this thread


On June 05, 2002 at 03:21:33, Gerd Isenberg wrote:

>[D] r2bk3/1p2n2p/p2Q2p1/6n1/6P1/4B3/PqP2RBP/6K1 b - - am Nf7 bm h6
>
>A few moves later Sjeng failed by 24...Nf7?, instead of 24...h6, which seems to
>be unclear or drawish.

Athlon XP 1150

New game
r2bk3/1p2n2p/p2Q2p1/6n1/6P1/4B3/PqP2RBP/6K1 b - - 0 1

Analysis by Sjeng 12.14 b:

1...h6 2.Bd4
  -+  (-2.19)   Depth: 2   00:00:00
1...Qb1+ 2.Rf1 Qb5
  -+  (-2.20)   Depth: 2   00:00:00
1...Nf7 2.Qe6
  -+  (-2.28)   Depth: 2   00:00:00
1...Nf7 2.Qe6 Ne5
  -+  (-2.43)   Depth: 3   00:00:00
1...Nf7 2.Qe6 Ne5
  -+  (-2.43)   Depth: 3   00:00:00
1...Nf7 2.Qf4 Qxa2 3.Bxb7 Kd7
  -+  (-2.15)   Depth: 4   00:00:00
1...h6 2.Bd4 Qc1+ 3.Rf1 Nf7
  -+  (-2.16)   Depth: 4   00:00:00
1...h6 2.Bd4 Qc1+ 3.Rf1 Nf7
  -+  (-2.16)   Depth: 4   00:00:00
1...h6 2.c4 Qa1+ 3.Rf1 Qxa2 4.Bxb7
  -+  (-1.84)   Depth: 5/17   00:00:00
1...Nf7 2.Qe6 Ne5 3.c4 Qb1+ 4.Rf1
  -+  (-2.16)   Depth: 5/19   00:00:00
1...Nf7 2.Qe6 Ne5 3.c4 Qb1+ 4.Rf1
  -+  (-2.16)   Depth: 5/19   00:00:01
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7
  -+  (-1.84)   Depth: 6/19   00:00:01  373kN
1...h6 2.Qf4 Qb1+ 3.Rf1 Qxc2 4.Qf8+ Kd7 5.Bxb7 Nh3+ 6.Kh1 Rb8 7.Bxa6 Qxa2 8.Qxh6
Qxa6 9.Qxh3
  -+  (-2.34)   Depth: 6/22   00:00:03  1291kN
1...h6 2.Qf4 Qb1+ 3.Rf1 Qxc2 4.Qf8+ Kd7 5.Bxb7 Nh3+ 6.Kh1 Rb8 7.Bxa6 Qxa2 8.Qxh6
Qxa6 9.Qxh3
  -+  (-2.34)   Depth: 6/22   00:00:03  1334kN
1...h6 2.Qf4 Qxa2 3.Qf8+ Kd7 4.Rd2+ Ke6 5.Rxd8 Qb1+ 6.Kf2 Nh7 7.Qh8 Rxd8 8.Qxd8
Qxc2+
  -+  (-2.48)   Depth: 7/22   00:00:06  3202kN
1...h6 2.Qf4 Qxa2 3.Qf8+ Kd7 4.Rd2+ Ke6 5.Rxd8 Qb1+ 6.Kf2 Nh7 7.Qh8 Rxd8 8.Qxd8
Qxc2+
  -+  (-2.48)   Depth: 7/24   00:00:07  3559kN
1...h6 2.c4 Qb1+ 3.Rf1 Qxa2 4.Rd1 Qxc4 5.Qd7+ Kf8 6.Bxb7
  -+  (-2.47)   Depth: 8/24   00:00:22  11523kN
1...h6 2.c4 Qb1+ 3.Rf1 Qxa2 4.Rd1 Qxc4 5.Qd7+ Kf8 6.Bxb7
  -+  (-2.47)   Depth: 8/29   00:00:24  12693kN
1...h6
  -+  (-1.97)   Depth: 9/29   00:00:54  27882kN
1...h6 2.c4 Qa1+ 3.Rf1 Qc3 4.Bxg5 hxg5 5.Bxb7 Qe3+ 6.Kh1 Ra7 7.Bxa6
  -+  (-1.63)   Depth: 9/31   00:01:17  39667kN
1...h6 2.c4 Qa1+ 3.Rf1 Qc3 4.Bxg5 hxg5 5.Bxb7 Qe3+ 6.Kh1 Ra7 7.Bxa6
  -+  (-1.63)   Depth: 9/31   00:01:24  43064kN
1...h6
  µ  (-1.13)   Depth: 10/31   00:01:26  44124kN
1...h6 2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Ne6 6.Rxa1
  =  (0.00)   Depth: 10/35   00:02:40  84217kN
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qxf7+ Qxf7 7.Rxf7 Kxf7 8.Bxa8
  =  (-0.20)   Depth: 10/36   00:03:40  114418kN
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qxf7+ Qxf7 7.Rxf7 Kxf7 8.Bxa8
  =  (-0.20)   Depth: 10/36   00:05:34  172170kN
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 11/36   00:06:19  195384kN
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 11/37   00:09:46  295596kN
1...Nf7 2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5
  =  (-0.15)   Depth: 12/37   00:11:19  345553kN

Playing out h6:


New game
r2bk3/1p2n3/p2Q2pp/6n1/6P1/4B3/PqP2RBP/6K1 w - - 0 1

Analysis by Sjeng 12.14 b:

2.Bd4 Bc7
  -+  (-2.37)   Depth: 2   00:00:00
2.c4
  ³  (-0.60)   Depth: 2/8   00:00:00
2.c4
  µ  (-0.72)   Depth: 2/8   00:00:00
2.c4 Nf7 3.Qxe7+ Bxe7 4.Rxb2 Rc8 5.Bd5 Kf8
  -+  (-2.24)   Depth: 2/8   00:00:00
2.c4
  ³  (-0.60)   Depth: 3/12   00:00:00
2.c4
  ³  (-0.61)   Depth: 3/12   00:00:00
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxb7 Nh3+
  -+  (-1.84)   Depth: 3/12   00:00:00
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxb7 Nh3+
  -+  (-1.84)   Depth: 3/12   00:00:00
2.c4
  ³  (-0.60)   Depth: 4/14   00:00:00
2.c4
  ³  (-0.61)   Depth: 4/14   00:00:00
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxb7 Nh3+
  -+  (-1.84)   Depth: 4/14   00:00:00
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxb7 Nh3+
  -+  (-1.84)   Depth: 4/14   00:00:00
2.c4
  ³  (-0.60)   Depth: 5/19   00:00:00
2.c4
  ³  (-0.61)   Depth: 5/19   00:00:00
2.c4 Qb1+ 3.Rf1 Qxa2 4.Rd1 Qxc4
  -+  (-2.47)   Depth: 5/21   00:00:01
2.c4 Qb1+ 3.Rf1 Qxa2 4.Rd1 Qxc4
  -+  (-2.47)   Depth: 5/21   00:00:02
2.c4
  ³  (-0.60)   Depth: 6/21   00:00:02  229kN
2.c4
  ³  (-0.61)   Depth: 6/21   00:00:02  231kN
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxg5 hxg5 5.Bxb7 Nc8 6.Qxg6+
  -+  (-2.21)   Depth: 6/22   00:00:04  429kN
2.c4 Qb1+ 3.Rf1 Qxa2 4.Bxg5 hxg5 5.Bxb7 Nc8 6.Qxg6+
  -+  (-2.21)   Depth: 6/22   00:00:05  618kN
2.c4
  -+  (-1.71)   Depth: 7/22   00:00:06  618kN
2.c4 Qa1+ 3.Rf1 Qc3 4.Bxg5 hxg5 5.Bxb7 Ra7 6.Bxa6
  µ  (-1.33)   Depth: 7/22   00:00:06  696kN
2.c4 Qa1+ 3.Rf1 Qc3 4.Bxg5 hxg5 5.Bxb7 Ra7 6.Bxa6
  µ  (-1.33)   Depth: 7/22   00:00:09  1215kN
2.c4
  µ  (-0.83)   Depth: 8/23   00:00:09  1279kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Nc6 6.Rxa1
  =  (0.00)   Depth: 8/23   00:00:09  1550kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Nc6 6.Rxa1
  =  (0.00)   Depth: 8/25   00:00:12  2721kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 9/25   00:00:13  3318kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 9/27   00:00:18  6844kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 10/27   00:00:23  10013kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 10/32   00:00:45  24494kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 11/32   00:01:04  35390kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 11/38   00:07:13  229137kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 12/38   00:08:16  262503kN
2.c4 Qa1+ 3.Rf1 Qb2 4.Rf2 Qa1+ 5.Rf1 Qb2 6.Rf2
  =  (0.00)   Depth: 12/45   00:16:13  511264kN

Playing out Nf7:

New game
r2bk3/1p2nn1p/p2Q2p1/8/6P1/4B3/PqP2RBP/6K1 w - - 0 1

Analysis by Sjeng 12.14 b:

2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 2   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 3   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 3   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 4   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 4   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 5/5   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 5/5   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 6/5   00:00:00
2.Qf4 Qxa2 3.c4 Bc7 4.Rxa2
  -+  (-1.84)   Depth: 6/13   00:00:01  6kN
2.Qf4
  µ  (-1.34)   Depth: 7/26   00:00:01  265kN
2.Qf4
  µ  (-1.35)   Depth: 7/26   00:00:01  318kN
2.Qf4 Qxa2 3.Bxb7 g5 4.Qxf7+ Qxf7 5.Rxf7 Rb8 6.Rxe7+ Kxe7 7.Bxa6
  µ  (-0.94)   Depth: 7/26   00:00:03  830kN
2.Qf4 Qxa2 3.Bxb7 g5 4.Qxf7+ Qxf7 5.Rxf7 Rb8 6.Rxe7+ Kxe7 7.Bxa6
  µ  (-0.94)   Depth: 7/26   00:00:03  830kN
2.Qf4
  ³  (-0.44)   Depth: 8/28   00:00:04  1181kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 Rc8 6.Bxc8 Nxc8
  ³  (-0.42)   Depth: 8/28   00:00:04  1516kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 Rc8 6.Bxc8 Nxc8
  ³  (-0.42)   Depth: 8/28   00:00:08  2781kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 9/28   00:00:09  3615kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 9/29   00:00:17  6542kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 10/29   00:00:18  8666kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8
  ³  (-0.60)   Depth: 10/34   00:00:31  15621kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5
  =  (-0.15)   Depth: 11/34   00:00:44  23300kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5
  =  (-0.15)   Depth: 11/38   00:01:43  56321kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5 Bf6
  ³  (-0.37)   Depth: 12/38   00:02:40  86737kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5 Bf6
  ³  (-0.37)   Depth: 12/40   00:05:54  193872kN
2.Qf4 Qxa2 3.c4 Qa1+ 4.Rf1 Qg7 5.Bxb7 g5 6.Qg3 Rc8 7.Bxc8 Nxc8 8.c5 Ne5 9.Bd2
  =  (-0.21)   Depth: 13/40   00:09:14  295723kN

--
GCP



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