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Subject: Re: Positional test - Paralyzing the Knight

Author: Robert Hyatt

Date: 10:00:53 02/28/01

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On February 28, 2001 at 11:12:09, Sune Larsson wrote:

>
>  [D]4n3/1b3k1p/p2p2p1/3Pp3/2P3P1/6PP/2BB4/6K1 w - - 0 1
>
>  This is Hort-Ciocaltea, Budapest 1973. Only two moves are required
>  to immobilize the black knight and pave the way for the victorious
>  march of the white king to the deserted queenside:
>
>  1.g5! Bc8 2.g4! and black's position is ripe for resignation.
>
>  Test: The above move order should be rewarded with big +scores for white.
>
>  Sune


There may be more than one winning plan here.  Crafty thinks that Ba5 wins a
pawn, for example...  eval = +1.26 after 18 plies, almost 2 minutes:

               17     1:01   0.99   1. Ba5 Ke7 2. Kf2 Bc8 3. Kf3 Bd7 4.
                                    Ke4 Kf6 5. Bb4 Nb6 6. Bd3 Nc8 7. c5
                                    dxc5 8. Bxc5 a5 9. d6
               17->   1:09   0.99   1. Ba5 Ke7 2. Kf2 Bc8 3. Kf3 Bd7 4.
                                    Ke4 Kf6 5. Bb4 Nb6 6. Bd3 Nc8 7. c5
                                    dxc5 8. Bxc5 a5 9. d6
               18     1:40   1.26   1. Ba5 Ke7 2. Kf2 Bc8 3. Kf3 Bd7 4.
                                    Ke4 Kf6 5. Bb3 h5 6. Bb4 hxg4 7. hxg4
                                    Ke7 8. c5 dxc5 9. Bxc5+ Kf6 10. g5+
                                    Kxg5 11. Kxe5
               18->   1:53   1.26   1. Ba5 Ke7 2. Kf2 Bc8 3. Kf3 Bd7 4.
                                    Ke4 Kf6 5. Bb3 h5 6. Bb4 hxg4 7. hxg4
                                    Ke7 8. c5 dxc5 9. Bxc5+ Kf6 10. g5+
                                    Kxg5 11. Kxe5



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