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Subject: Re: Deep Junior is a whole bishop up against Tiger

Author: Uri Blass

Date: 10:22:10 08/20/01

Go up one level in this thread


On August 20, 2001 at 12:20:50, Jeroen Noomen wrote:

>On August 20, 2001 at 11:48:06, Jonas Cohonas wrote:
>
>Hi,
>
>>1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 b5 6.Bb3 Bb7 7.c3 Nxe4 8.d4 Na5 >9.Bc2 exd4 10.Bxe4 Bxe4 11.Re1 d5 12.Nxd4 c5 13.Nf5 g6 14.Ne3 Be7 15.f3 d4 >16.cxd4 cxd4 17.Ng4 f5??
>
>This is bad, really bad....  White plays a rare variation (10 b4 Nc4 is
>more critical) and Tiger reacts wrongly. I take the blame for this, up
>to now in EACH WMCCC such a thing seems to happen. Yuck :-(

Gambittiger2 cannot see that this is bad even at depth 16

Junior 7 - Tiger
r2qk2r/4bp1p/p5p1/np6/3pb1N1/5P2/PP4PP/RNBQR1K1 b kq - 0 1

Analysis by Gambit Tiger 2.0:

17...f5 18.Ne5 Bb7 19.Bh6 Nc6 20.Bg7 Rg8 21.Nxc6 Bxc6 22.Bxd4
  ³  (-0.26)   Depth: 9   00:00:00  89kN
17...f5 18.Bh6 Qb6 19.Nd2 Nc4 20.Nxc4 bxc4 21.Nf2 Bd3 22.Nxd3 cxd3
  =  (-0.10)   Depth: 9   00:00:04  886kN
17...f5 18.Nh6 Bxb1 19.Rxb1 d3 20.Bd2 Nc4 21.Bc3 Rf8 22.Re6 Qd7
  =  (0.12)   Depth: 10   00:00:07  1610kN
17...f5 18.Bh6 Nc4 19.Bg7 Rg8 20.Bxd4 Rf8 21.Na3 Nxa3 22.bxa3 Bc2 23.Qxc2 Qxd4+
24.Nf2
  =  (0.08)   Depth: 11   00:00:18  3897kN
17...f5 18.Ne5 Bb7 19.Bh6 Rg8 20.Na3 Qd5 21.Nc2 Nc4 22.Nxc4 Qxc4 23.Nxd4 Qc7
  =  (0.04)   Depth: 12   00:00:46  9934kN
17...f5 18.Nh6 Bxb1 19.Rxb1 d3 20.Kh1 Nc6 21.Bd2 Qd5 22.Bc3 d2 23.Qxd2 Qxd2
24.Bxd2 Kf8
  =  (0.20)   Depth: 13   00:03:48  50835kN
17...f5 18.Nh6 Bxb1 19.Rxb1 Kf8 20.Qe2 d3 21.Qe6 Qd4+ 22.Re3 Qf6 23.Qxf6+ Bxf6
24.Rxd3 Nc4 25.b3 Ne5 26.Ba3+ Kg7
  =  (0.24)   Depth: 14   00:04:23  59101kN
17...f5 18.Nh6 Bxb1 19.Rxb1 Kf8 20.Bf4 Qb6 21.Rxe7 Kxe7 22.Qe1+ Kd7 23.Qe5 Nc4
24.Qg7+ Kc6 25.Rc1 d3+ 26.Kf1
  =  (0.20)   Depth: 15   00:06:34  89911kN
17...f5 18.Nh6 Bxb1 19.Rxb1 Kf8 20.Bf4 Nc4 21.b3 Ne3 22.Qd2 Kg7 23.Rbc1 Qb6
24.Bxe3 dxe3 25.Qxe3 Qxe3+ 26.Rxe3
  =  (0.20)   Depth: 16   00:29:37  410392kN

(Blass, Tel-aviv 20.08.2001)


>
>>18.Nh6 Bxb1
>
>Tiger's score dropped to -1,6, the game is already over before it even
>started. Needless to say I was not amused to see this.....

Tiger starts to suspect that it is bad only at depth 15.
Maybe tiger needs depth 17 to find h5 in the original position
I am not going to check it but it seems that there is a problem with the engine.

Junior 7 - Tiger
r2qk2r/4b2p/p5pN/np3p2/3pb3/5P2/PP4PP/RNBQR1K1 b kq - 0 1

Analysis by Gambit Tiger 2.0:

18...Bxb1 19.Rxb1 d3 20.Re3 Qd4 21.Qxd3 Qxd3 22.Rxd3 Nc4
  =  (-0.04)   Depth: 8   00:00:00  91kN
18...Bxb1 19.Rxb1 d3 20.Bd2 Nb7 21.Bc3 Rf8 22.Re3 Nc5
  =  (0.08)   Depth: 8   00:00:00  103kN
18...Bxb1 19.Rxb1 d3 20.Bd2 Nc4 21.Bc3 Rf8 22.Re6 Qd5 23.Qe1
  =  (0.00)   Depth: 9   00:00:01  220kN
18...Bxb1 19.Rxb1 d3 20.Bd2 Nc4 21.Bc3 Rf8 22.Re6 Qd5 23.Qe1 Qc5+ 24.Kf1
  =  (0.04)   Depth: 10   00:00:02  490kN
18...Bxb1 19.Rxb1 d3 20.b3 Nc6 21.Bb2 Rf8 22.Bg7 d2 23.Re3 f4 24.Re6 Nd4 25.Bxd4
Qxd4+
  =  (0.03)   Depth: 11   00:00:06  1380kN
18...Bxb1 19.Rxb1 Kf8 20.Qe2 d3 21.Qe6 Qd4+ 22.Re3 Qf6 23.Qxf6+ Bxf6 24.Rxd3 Nc4
25.Rd7 Ne5
  =  (0.02)   Depth: 12   00:00:19  4474kN
18...Bxb1 19.Rxb1 Kf8 20.Qe2 d3 21.Qe6 Qd4+ 22.Re3 Qf6 23.Qxf6+ Bxf6 24.Rxd3 Nc4
25.b3 Ne5 26.Ba3+ Kg7 27.Rd6
  =  (0.06)   Depth: 13   00:00:34  7965kN
18...Bxb1 19.Rxb1 Kf8 20.Qe2 d3 21.Qe6 Qd4+ 22.Re3 Qf6 23.Qxf6+ Bxf6 24.Rxd3 Nc4
25.b3 Ne5 26.Ba3+ Kg7 27.Rd6
  =  (0.16)   Depth: 14   00:01:17  18232kN
18...Bxb1 19.Rxb1 Kf8 20.Qe2 Bf6 21.Qe6 Qe7 22.Bd2 Qxe6 23.Rxe6 Bd8 24.Bf4 Nc4
25.b3 Na3 26.Bd6+ Kg7 27.Bxa3
  ²  (0.54)   Depth: 15   00:05:18  76630kN

(Blass, Tel-aviv 20.08.2001)

Uri



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