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Subject: How long does it take your engine...

Author: Jonas Cohonas

Date: 04:15:43 07/03/05


To see that this is completely lost for black?

[D] 4b1rk/2q3pp/1p1r4/pPp1QRPP/P1B1pP2/8/6K1/5R2 b - - 0 40

This is the end position in a correspondence game where i had the white pieces
and it came about like this:

[D] r2b1r1k/2q3pp/1pNp1nb1/pP1P1p2/P1PBpP2/2Q5/4B1PP/2R2RK1 w - - 0 26

h3!?

[D] r2b2rk/2q3pp/1pNp1nb1/pP1P1p2/P1PBpP2/2Q4P/4B1P1/2R2RK1 w - - 0 27

g4!

[D] r2b2rk/2qn2pp/1pNp2b1/pP1P1p2/P1PBpPP1/2Q4P/4B3/2R2RK1 w - - 0 28

h4!

[D] r5rk/2qn2pp/1pNp1bb1/pP1P1p2/P1PBpPPP/2Q5/4B3/2R2RK1 w - - 0 29

h5

[D] r3b1rk/2qn2pp/1pNp1b2/pP1P1p1P/P1PBpPP1/2Q5/4B3/2R2RK1 w - - 0 30

g5!

[D] r3b1rk/2q3pp/1p1p4/pPnP1pPP/P1PNpP2/2Q5/4B3/2R2RK1 w - - 0 32

After Bxd4 Nxd4 Nc5, then Ne6 Nxe6 dxe6 Qc5+:

[D] r3b1rk/6pp/1p1pP3/pPq2pPP/P1P1pP2/2Q5/4B3/2R2RK1 w - - 0 34

Kg2 Ra7 Rcd1 Re7 Rd5 Qc7 Rxf5! Rxe6:

[D] 4b1rk/2q3pp/1p1pr3/pP3RPP/P1P1pP2/2Q5/4B1K1/5R2 w - - 0 38

Now c5!!

[D] 4b1rk/2q3pp/1p1pr3/pPP2RPP/P3pP2/2Q5/4B1K1/5R2 b - - 0 38

dxc5 Bc4! Rd6 Qe5!! and my opponent resigned:

Now how many of whites (and blacks) moves can your engine find? and can it even
see that black is lost?

Regards
Jonas



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