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Subject: Re: Marshall Attack - test

Author: Ernst Walet

Date: 09:21:05 09/17/03

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On September 17, 2003 at 10:11:12, Mihaly Szalai wrote:

>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
>d5 9. exd5 e4 10. Ng5 Bg4 11. Qc2 Ne5 12. Nxe4 Nxe4 13. Qxe4 Bd6 14. d4 f5 15.
>Qc2
>
>[D]r2q1rk1/2p3pp/p2b4/1p1Pnp2/3P2b1/1BP5/PPQ2PPP/RNB1R1K1 b - - 0 15
>
>Chessprograms are strong in tactics (so they say...)
>How fast is your engine finding 15...Nf3+?
>
>Mihaly

Shredder 7.04 DP 1.2:

New game - Hiarcs 9
r2q1rk1/2p3pp/p2b4/1p1Pnp2/3P2b1/1BP5/PPQ2PPP/RNB1R1K1 b - - 0 1

Analysis by Shredder 7.04:

15...Nf3+ 16.gxf3
  ±  (0.98)   Depth: 1/1   00:00:00
15...Nf3+ 16.gxf3 Bxf3
  ±  (0.98)   Depth: 1/2   00:00:00
15...Nf3+ 16.gxf3 Bxf3
  +-  (4.04)   Depth: 2/4   00:00:00
15...Nf3+ 16.gxf3 Bxf3
  +-  (4.08)   Depth: 2/6   00:00:00
15...Nc4 16.Qxf5
  +-  (2.63)   Depth: 2/6   00:00:00
15...Nc4 16.Re7
  +-  (2.25)   Depth: 2/6   00:00:00
15...Nc4 16.Bxc4 bxc4
  +-  (2.25)   Depth: 2/6   00:00:00
15...Nc4 16.Bxc4 bxc4 17.Bd2
  +-  (2.42)   Depth: 3/8   00:00:00
15...Ng6 16.f3 Bh5
  +-  (2.41)   Depth: 3/10   00:00:00
15...Ng6 16.h3 Bh5
  +-  (2.14)   Depth: 3/10   00:00:00
15...Ng6 16.h3 Bh5 17.Bd2
  +-  (2.20)   Depth: 4/6   00:00:00
15...Ng6 16.h3 Bh5 17.a4 Qd7 18.axb5 Qxb5
  +-  (2.11)   Depth: 5/11   00:00:00
15...Ng6 16.h3 Bh5 17.a4 Qd7 18.Bg5
  +-  (2.18)   Depth: 6/10   00:00:00
15...Ng6 16.h3 Bh5 17.a4 b4 18.cxb4 Qh4
  +-  (2.09)   Depth: 7/19   00:00:00  43kN
15...Ng6 16.h3 Bh5 17.a4 b4 18.Be3 bxc3 19.bxc3 Qh4
  +-  (2.09)   Depth: 8/20   00:00:00  111kN
15...Nf3+ 16.gxf3 Bxf3 17.Rd1 Bxd1 18.a4 Bxc2
  +-  (2.08)   Depth: 8/22   00:00:00  170kN
15...Nf3+ 16.gxf3 Bxf3 17.Qd3 Bxh2+ 18.Kf1 Be4 19.Qh3 Qd6 20.Bg5
  +-  (1.96)   Depth: 8/23   00:00:00  210kN
15...Nf3+ 16.gxf3 Bxf3 17.Qd3 Bxh2+ 18.Kf1 Be4 19.Qh3 Qd6 20.Nd2 Rae8 21.Nxe4
fxe4
  +-  (2.11)   Depth: 9/26   00:00:00  304kN
15...Ng6 16.h3 Qh4 17.hxg4 Qh2+ 18.Kf1 Nh4 19.Re5 Bxe5 20.dxe5 Qxg2+ 21.Ke2
  +-  (2.10)   Depth: 9/26   00:00:01  333kN
15...Ng6 16.h3 Qh4 17.a4 Rfe8 18.Re6 Nf8 19.hxg4 Qh1+ 20.Kxh1
  +-  (2.10)   Depth: 9/26   00:00:01  407kN
15...Ng6 16.h3 Qh4 17.a4 Bxh3 18.axb5 Qg4 19.Re5
  +-  (1.85)   Depth: 10/26   00:00:02  733kN
15...Ng6 16.h3 Qh4 17.Qd3 Rae8 18.Re6 Bh5 19.a4 Nf4 20.Bxf4 Qxf4 21.axb5 axb5
22.Qxb5
  +-  (1.82)   Depth: 10/30   00:00:02  991kN
15...Ng6 16.h3 Qh4 17.Qd3 Bh5 18.a4 Rfe8 19.Rxe8+ Rxe8 20.Bd2 Re2 21.Qxf5 Bf4
  +-  (1.67)   Depth: 11/28   00:00:05  1869kN
15...Ng6 16.h3 Qh4 17.Re6 Bxh3 18.gxh3 Qxh3 19.f4 Nxf4 20.a4 Nxe6 21.dxe6
  +-  (1.43)   Depth: 12/31   00:00:10  3967kN
15...Ng6 16.h3 Qh4 17.Re6 Bh5 18.a4 b4 19.Bc4 Nf4 20.Re3 Kh8
  +-  (1.41)   Depth: 13/32   00:00:20  7965kN
15...Ng6 16.h3 Qh4 17.Re6 Bxh3 18.gxh3 Qxh3 19.f4 Nh4 20.Qe2 Qg3+ 21.Kf1 Bxf4
22.Bxf4 Qxf4+ 23.Qf2 Qc1+ 24.Re1 Qg5
  ±  (1.30)   Depth: 14/35   00:00:44  17250kN
15...Ng6 16.h3 Qh4 17.Re6 Bxh3 18.gxh3 Qxh3 19.f4 Nh4 20.Qe2 Qg3+ 21.Kf1 Qh3+
22.Ke1 Bxf4 23.Kd1 Bxc1 24.Kxc1 Qh1+ 25.Qe1 Qh2
  ±  (1.37)   Depth: 15/39   00:01:36  37417kN
15...Nf3+ 16.gxf3 Qh4 17.Re5 Bh3 18.Qd1 Rf6 19.Re6 f4 20.a4
  ±  (1.36)   Depth: 15/39   00:02:05  49107kN
15...Nf3+ 16.gxf3 Qh4 17.Re5 Bh3 18.Qd1 Rf6 19.Re6 f4 20.a4 Rxe6 21.axb5
  ±  (1.01)   Depth: 15/43   00:02:24  56688kN
15...Nf3+ 16.gxf3 Qh4 17.fxg4 Qxh2+ 18.Kf1 fxg4 19.Re4 g3 20.f4 Qh1+ 21.Ke2 g2
22.Be3 Qf1+ 23.Kd2 Bxf4 24.d6+ Kh8 25.dxc7 Bxe3+ 26.Rxe3 g1Q 27.Qxh7+ Kxh7 28.a4
bxa4
  -+  (-1.73)   Depth: 15/49   00:08:36  207451kN

(Athlon XP @ 2200 MHz, 512MB hash, 3-5 man EGTB's 17.09.2003)


Hiarcs 9:

New game - Hiarcs 9
r2q1rk1/2p3pp/p2b4/1p1Pnp2/3P2b1/1BP5/PPQ2PPP/RNB1R1K1 b - - 0 1

Analysis by Hiarcs 9:

15...Nc4
  +-  (1.52)   Depth: 1/4   00:00:00
15...Nc4 16.Nd2
  +-  (1.74)   Depth: 2/7   00:00:00
15...Nc4 16.Nd2
  +-  (1.47)   Depth: 3/9   00:00:00
15...Nc4 16.h3 Bh5
  +-  (1.46)   Depth: 3/10   00:00:00
15...Nc4 16.h3 Bh5 17.Nd2
  +-  (1.68)   Depth: 4/12   00:00:00
15...Nc4 16.h3 Bh5 17.Nd2
  +-  (1.93)   Depth: 5/13   00:00:00  8kN
15...Nc4 16.Bxc4 bxc4 17.h3 Re8 18.Be3
  +-  (2.34)   Depth: 5/13   00:00:00  9kN
15...Ng6 16.h3
  +-  (2.24)   Depth: 5/16   00:00:00  13kN
15...Ng6 16.h3 Bh5 17.Be3 Nh4
  +-  (1.47)   Depth: 5/16   00:00:00  15kN
15...Ng6 16.h3 Bh5 17.Be3 Nh4
  +-  (1.73)   Depth: 6/18   00:00:00  22kN
15...Ng6 16.h3 Bh5 17.Be3 Qh4 18.Nd2
  +-  (1.73)   Depth: 6/21   00:00:00  27kN
15...Nd7 16.h3
  +-  (1.72)   Depth: 6/21   00:00:00  45kN
15...Nd7 16.h3 Bh5 17.Nd2 Qh4 18.Nf1
  +-  (1.58)   Depth: 6/21   00:00:00  48kN
15...Nd7 16.h3 Bh5 17.Nd2 Qh4 18.Nf1 Rad8
  +-  (1.58)   Depth: 7/21   00:00:00  68kN
15...Nd7 16.h3 Bh5 17.Nd2 Qh4 18.Nf1 Rad8 19.Be3
  +-  (1.65)   Depth: 8/24   00:00:01  183kN
15...Nd7 16.h3 Bh5 17.Nd2 Qh4 18.Nf1 a5 19.Qd3 Rab8
  +-  (1.61)   Depth: 9/24   00:00:02  513kN
15...Ng6 16.h3
  +-  (1.60)   Depth: 9/24   00:00:03  664kN
15...Ng6 16.Nd2 a5 17.a4 Re8 18.Rxe8+ Qxe8 19.Nf1
  +-  (1.51)   Depth: 9/28   00:00:05  1041kN
15...Ng6 16.Nd2 Qh4 17.Nf1 f4 18.h3 Bd7
  ±  (1.31)   Depth: 10/30   00:00:10  2253kN
15...Ng6 16.Nd2 Qh4 17.Nf1 f4 18.h3 Bd7 19.Nh2 Rae8 20.Rxe8 Rxe8 21.Nf3 Qh5
  ±  (1.13)   Depth: 11/33   00:00:25  5805kN
15...Ng6 16.h3 Qh4 17.Qd3 f4 18.Qe4 Bf5 19.Qf3 Qg5
  ±  (0.92)   Depth: 12/35   00:01:21  18738kN
15...Nf3+ 16.gxf3
  ±  (0.91)   Depth: 12/39   00:01:48  25395kN
15...Nf3+ 16.gxf3
  ±  (0.88)   Depth: 12/39   00:01:49  25682kN
15...Nf3+ 16.gxf3 Qh4 17.fxg4 Qxh2+ 18.Kf1 f4 19.Nd2 Qh1+ 20.Ke2 Rae8+ 21.Ne4
Rxe4+ 22.Be3 Qg2 23.Kd3 fxe3
  ²  (0.27)   Depth: 12/39   00:02:09  30816kN
15...Nf3+ 16.gxf3 Qh4 17.Re5 Bh3
  =  (0.03)   Depth: 13/40   00:03:54  56476kN

(Athlon XP @ 2200 MHz, 512MB hash, 3-5 man EGTB's 17.09.2003)

Ernst.



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