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Subject: Re: Correspondence game re-examined

Author: Eran Karu

Date: 10:14:31 05/21/04

Go up one level in this thread


Fritz8 does not find the move 21.exd6 in about 10 minutes but Fritz 5.32 does in
2 seconds.

[D]1r1r2k1/p2q1p1p/2npp1p1/1p2P3/5P1b/1N5P/PPPQ2P1/3RR1BK w - - 0 21

Pentium III 1 Ghz, 32 MB hashtable runs under ChessBase 8:


Analysis by Fritz 8:

21.Rf1 d5 22.Bc5 f6 23.Bd6
  ²  (0.56)   Depth: 5/18   00:00:00  18kN
21.Rf1 d5 22.Nc5 Qe8 23.Be3 Be7
  ²  (0.56)   Depth: 6/19   00:00:00  40kN
21.Rf1 Be7 22.Bc5 d5 23.Qc3 Nd4 24.Bxd4
  ²  (0.53)   Depth: 7/21   00:00:00  114kN
21.Rf1 Be7 22.Bc5 d5 23.Qe3 f6 24.Bxe7 Qxe7 25.Nc5
  ²  (0.53)   Depth: 8/23   00:00:01  258kN
21.Rf1 Be7 22.Bc5 d5 23.Qe3 Bxc5 24.Nxc5 Qc7 25.c3 h6
  ²  (0.50)   Depth: 9/25   00:00:02  654kN
21.Rf1 Be7 22.Bc5 d5 23.Kg1 Qc7 24.Bxe7 Nxe7 25.Nd4 b4 26.Qd3
  ²  (0.47)   Depth: 10/27   00:00:07  2209kN
21.Rf1 Be7 22.Bc5 d5 23.Qe3 Bxc5 24.Nxc5 Qe7 25.c3 Rbc8 26.b4
  ²  (0.34)   Depth: 11/31   00:00:15  5306kN
21.Re3
  ²  (0.38)   Depth: 11/31   00:00:18  7001kN
21.Re3 Be7 22.Rd3 d5 23.Nd4 Rbc8 24.c3 Nxd4 25.Bxd4 Qc7 26.Qe3
  ²  (0.38)   Depth: 12/29   00:00:32  13185kN
21.Re3 Be7 22.Rd3 d5 23.Nd4 Rbc8 24.c3 a6 25.Qe2 Nxd4 26.Bxd4 Qc7 27.Qg4
  ²  (0.38)   Depth: 13/33   00:01:11  31182kN
21.Re3 Be7 22.Rd3 d5 23.Nd4 Rbc8 24.c3 a6 25.Qe2 Rf8 26.Qg4
  ²  (0.38)   Depth: 14/34   00:02:40  72187kN
21.Re3 Be7 22.Rd3 d5 23.Nd4 Nxd4 24.Bxd4 a5 25.c3 a4 26.Qe3
  =  (0.25)   Depth: 15/39   00:08:45  244996kN
21.Rf1
  ²  (0.28)   Depth: 15/39   00:10:07  285205kN

(Karu, Eran Karu 21.05.2004)

Is 21.Rf1 not the best move?


Analysis by Fritz 5.32:

21.exd6
  =  (-0.09)   Depth: 1/3   00:00:00
21.exd6
  =  (-0.09)   Depth: 1/6   00:00:00
21.Bf2
  ²  (0.53)   Depth: 1/9   00:00:00
21.Bf2 Bxf2 22.Qxf2
  ²  (0.53)   Depth: 2/8   00:00:00
21.Bf2 Bxf2 22.Qxf2 Qc7
  ²  (0.53)   Depth: 3/15   00:00:00  1kN
21.Bf2 Bxf2 22.Qxf2 Qc7 23.exd6 Rxd6 24.Rxd6 Qxd6
  ²  (0.47)   Depth: 4/11   00:00:00  2kN
21.Bf2 Bxf2 22.Qxf2 Qc7 23.exd6 Rxd6 24.Nc5
  ²  (0.53)   Depth: 5/17   00:00:00  14kN
21.Bf2 Be7 22.Nc5 Qc8 23.exd6 Bxd6 24.Qe3
  ²  (0.53)   Depth: 6/18   00:00:00  35kN
21.Bf2 Bxf2 22.Qxf2 Qc7 23.exd6 Rxd6 24.Rxd6 Qxd6 25.Qc5 Qc7
  ²  (0.41)   Depth: 7/22   00:00:00  144kN
21.Re2
  ²  (0.44)   Depth: 7/22   00:00:00  236kN
21.Re2 d5 22.Bf2 Be7 23.Bc5 Bh4
  ²  (0.50)   Depth: 7/22   00:00:00  265kN
21.Re3
  ²  (0.53)   Depth: 7/22   00:00:00  328kN
21.Re3 d5 22.Nc5 Qe7 23.Rd3 Rbc8 24.Be3
  ²  (0.56)   Depth: 7/22   00:00:00  343kN
21.Re3 d5 22.Rd3 Rbc8 23.g3 Be7 24.Bc5 a6 25.Bxe7 Qxe7
  ²  (0.53)   Depth: 8/20   00:00:01  456kN
21.Re3 d5 22.Rd3 Rbc8 23.g3 Be7 24.Bc5 a6 25.Bxe7 Qxe7
  ²  (0.53)   Depth: 9/25   00:00:01  967kN
21.exd6
  ²  (0.56)   Depth: 9/25   00:00:02  1450kN
21.exd6 Bxe1 22.Qxe1 Qe8 23.Nc5 e5 24.Na6 Rbc8 25.Nc7 Rxc7
  ²  (0.59)   Depth: 10/24   00:00:02  1712kN
21.exd6 Bxe1 22.Qxe1 Qe8 23.Nc5 e5 24.Bh2 f6 25.Qh4 Qf7
  ²  (0.66)   Depth: 11/24   00:00:05  3790kN
21.exd6 Bxe1 22.Qxe1 Qe8 23.Nc5 e5 24.Bf2 exf4 25.Qxe8+ Rxe8
  ±  (0.78)   Depth: 12/28   00:00:10  8640kN
21.exd6 Bxe1 22.Qxe1 Qe8 23.Nc5 e5 24.Bf2 f6 25.d7 Qf7
  ±  (0.75)   Depth: 13/28   00:00:25  22603kN

(Karu, Eran Karu 21.05.2004)

Eran Karu



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