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Subject: Re: GM Christiansen's rook sac is non-forcing.

Author: Joe Pechie

Date: 00:01:57 10/02/02

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I forced the Qf3+ move using Chess Tiger 15. Than I let it think at least one
minute per move to get the following moves. After that I looked at that position
with three different programs. All see some advantage for black.


1... Qf3+ 2. Kc2 Qxb3+ 3. Kxb3 f3 4. e5 Nxe5 5. Rf1 f2 6. Raxf2 gxf2 7. Rxf2

{Ruffian 1.0.0  1:17  -.11 D/16   Kg7 Rf1 Rh4 Kc3 Rh3+ Kd4 Rd3+ Ke4 Rg3 Kd4 Rg4+
Kc3 Rg5 Be4 Rg3+ Kd4}

{Crafty 19      1:05  -.02 D/14   Rg3+ Kc2 Ng4 Rf7 Ne3+ Kd2 Nxd5 cxd5 Rg5 Rxc7
Rxd5+ Kc3 Rc5+ Rxc5 dxc5 Kc4 Kg5 Kd5 Kf6}

{Chess Tiger 15 2:52  -.76 D/17   Rg3+ Kc2 Kg7 Rf5 Rg4 Kc3 Rh4 Rf2 Rh3+ Kc2 Rh6
Kc3 Rf6 Rg2+ Rg6 Rf2 Rg3+ Kd4 Rg1}

Joe



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