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Subject: Re: where are the difficult test positions ? please no positions that we

Author: Vincent Lejeune

Date: 11:11:12 11/08/05

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I made 2 mistakes :
Here is the key for this one :

8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - c0 "Hardest";
Bh3!

Topalov,V (2740) - Shirov,A (2710) [D85]
Linares 15th Linares (10), 04.03.1998
Ftacnik :
 47...Bh3!! Fascinating idea of Shirov, since black has to push his two pawns
a4,d5 as quickly as possible. The bishop would obstruct the way of the king on
the natural square e4, on h3 it wins a precious tempo. [ 47...a3 48.Kf2 a2
49.Ke3 Bg4 50.g3 Kf5 51.Bd4÷;
 47...Be4 Shirov -+ 48.Kf2 Kf5 49.g3÷] 48.gxh3 [ 48.Kf2 Kf5 49.Kf3 Bxg2+ 50.Kxg2
Ke4 51.Bxf6 d4 52.Be7 Kd3 53.Kf2 Kc2 54.Bb4 d3-+] 48...Kf5 49.Kf2 Ke4 50.Bxf6 [
50.Ke2 a3 51.Kd2 d4 52.Ba1 f5-+] 50...d4 51.Be7 [ 51.Ke2? a3-+] 51...Kd3! 52.Bc5
Kc4 53.Be7 [ 53.Bxd4 Kxd4 54.Ke2 Kc3 55.Kd1 Kb2-+] 53...Kb3 [ 53...Kb3 54.Bc5 d3
55.Ke3 Kc2 56.Bb4 a3-+]  0-1

and for this one :
1r3rk1/3b1p1p/pp1p1p1Q/n1q1p3/2P1P3/P1PB1N2/6PP/1R3RK1 w - - bm Nd4;
Only Nd4 is possible because king is in check.

Thanks for testing , Dann !

On November 08, 2005 at 13:31:38, Dann Corbit wrote:

>b2r3r/4Rp1p/p2q1np1/1p1P4/kP1Q4/P4PPB/2P4P/1K6 w - - bm Ra7;
>r3r1k1/1p3pp1/p1bp1b1B/2q1n3/2PN4/1P5P/2BR1QP1/5RK1 w - - bm b4;
>4RQ2/5p2/2q2kp1/3p4/3P2PP/8/1K6/8 b - - c0 "Draw";
>8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;
>rnb2rk1/pp2bppp/2p5/q7/4NN2/4B1QP/PPP3P1/2KR3R w - - bm Rd5;
>r3k2r/4b2p/p1n3pN/1p1q1p2/5B2/3p1P2/PP4PP/2RQR2K w kq - bm Rxc6;
>1r3rk1/3b1p1p/pp1p1p1Q/n1q1p3/2P1P3/P1PB1N2/6PP/1R3RK1 w - - bm Nd4 Nh4;
>1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - id Brzozka - Bronstein;
>bm b8b3;
>8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - c0 "Hardest";
>r1b2r1k/4qp1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 w - - id "Kholmov -
>Bronstein"; bm d4c6;
>rqb1rnk1/4n1pp/2p5/2PpPpPP/1p3N2/1P1BP3/1BQ5/1K4RR w - - id "Bischoff -
>Nogueiras"; bm e5e6;
>r2q1rk1/pp2bpp1/4p2p/2pPB2P/2P3n1/3Q2N1/PP3PP1/2KR3R w - - id "Karpov -
>Huebner"; bm e5g7;
>r2q1rk1/3nbpp1/4p2p/p1p1P3/1p1P3P/3B1b1R/PPQB1PP1/R3K3 w Q - id "Portisch -
>Johannessen"; bm d2h6;
>...



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