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Subject: Re: GM Christiansen's rook sac -- Susan is right!

Author: Terry Ripple

Date: 00:20:55 10/03/02

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Hi Martin,
I believe you over-looked a better move on move #63.e5! better than Qd3? Here
are the begining moves from the diagram below:

59....Qh3 60.Kc2 Qh2+ 61.Kb1 g2 62.Qf3 Kg5 63.e5! g1(Q) 64.Rxh2 Qxh2
65.exd6 cxd6 66.Bb7 Rg1 67.Qd5+ Kh6 68.Qxd6 Qg3 69.Bf3! Rxd1+ 68.Qxd1

[D]8/p1p5/Pp1p2nk/1P1B4/2P1Ppr1/1Q1K2p1/R5q1/3R4 b - - 0 59

The below diagram is the final position from the moves presented at the top and
shows there is equality in the position and would be very difficult to progress
with the pawn because of the blockcade and also White's checks!

Here is the analysis of the final position from Fritz 7: Opinions welcome!

New position
[8]/p7/Pp4nk/1P6/2P2p2/5Bq1/8/1K1Q4 b - - 0 1

Analysis by Fritz 7:

1...Ne5 2.Qd6+ Qg6+ 3.Qxg6+ Kxg6 4.Bd5 f3 5.Kc2
  µ  (-0.88)   depth: 6/20   00:00:00  26kN
1...Ne5 2.Qd6+ Qg6+ 3.Qxg6+ Kxg6 4.Be4+ Kg5 5.Kc2 Nxc4 6.Kc3
  µ  (-0.85)   depth: 7/22   00:00:00  56kN
1...Ne5 2.Bd5 f3 3.Kc2 Kg5 4.Qf1 Kf4 5.Kd1
  µ  (-0.91)   depth: 8/24   00:00:01  194kN
1...Ne5 2.Bd5 f3 3.Qd2+ Kg7 4.Qe3 Kf6 5.Kc2 Qh2+ 6.Kc3 f2
  µ  (-0.91)   depth: 9/24   00:00:05  624kN
1...Ne5
  ³  (-0.63)   depth: 10/28   00:00:14  1562kN
1...Ne5 2.Qd6+ Qg6+ 3.Qxg6+ Kxg6 4.Be4+ Kg5 5.c5 Nc4 6.Bd3 Ne5
  =  (0.00)   depth: 10/28   00:00:18  2065kN
1...Qf2
  =  (0.03)   depth: 10/28   00:00:21  2435kN
1...Qf2 2.Be4 Qe3 3.Bxg6 Kxg6 4.Qg4+ Kf6 5.Qh4+ Ke5 6.Qe7+ Kd4 7.Qxa7 Qe1+ 8.Kb2
Qe2+
  =  (-0.07)   depth: 10/28   00:00:26  2982kN
1...Qf2 2.Qd5 Qe3 3.Kc2 Kg7 4.Qd7+ Kf6 5.Bd5 Ne7 6.Qxa7 Nxd5 7.cxd5 Qc5+ 8.Kb3
Qxb5+
  =  (-0.04)   depth: 11/31   00:01:20  8152kN
1...Qf2 2.Qd5 Qe3 3.c5 Qe1+ 4.Kc2 Qf2+ 5.Kc3 Qe3+ 6.Kc2
  =  (0.00)   depth: 12/31   00:02:11  13267kN
1...Qg5
  =  (0.03)   depth: 12/33   00:02:49  17656kN
1...Qg5 2.Be4 Qe7 3.Qd3 Qe6 4.Qd5 Qxd5
  =  (0.00)   depth: 12/33   00:03:19  20737kN
1...Qg5 2.Be4 Qe7 3.Qd3 Qe6 4.Qd5 Qh3 5.Bf3
  =  (0.00)   depth: 13/31   00:04:44  29512kN
1...Qf2
  =  (0.03)   depth: 13/33   00:05:36  34490kN
1...Qf2 2.Qd5 Qe3 3.Kc2 Ne5 4.Qd6+ Kg5 5.Qe7+ Kf5 6.Qf8+ Kg6 7.Qd6+
  =  (0.00)   depth: 14/36   00:12:32  77020kN

Regards,
      Terry







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