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Subject: Re: Dutch Championship Test Positions

Author: Robert Hyatt

Date: 20:28:02 11/06/99

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On November 06, 1999 at 03:31:41, Howard Exner wrote:

>Here are some positions to try out on your programs from the first
>half of the recent Dutch Computer Chess Championships.
>
>8/6p1/7p/1pn1k3/p5P1/2P2P2/1PK3N1/8 b - - bm Ne6; id Chessica - McTobber99;
>
>The old guideline that Knight/pawn endings have similar themes to pawn endings
>applies here.
> g5 was played which ruins a possible g6, h5 outside passer idea. Instead, Ne6
>follwed up by Nf4
>and the h pawn passer idea would probably have won.


All I see here is g6 with the idea of making an outside passer:

               11->   0.23   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               12     0.23   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               12->   0.49   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               13     0.49   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               13->   1.42   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               14     1.42   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 <HT>
               14->   9.14   0.50   1. ... g6 2. Kd2 h5 3. Ke3 Kf6 4. gxh5
                                    gxh5 5. f4 Ke6 6. Nh4 <HT>

>
>rnb1kb1r/pp1ppp1p/1q4p1/2pPP2n/8/2N2N2/PPQB1PPP/R3KB1R w KQkq - bm d5d6; id
>Insomniac - Morphy3.1;
>
>d6! ended the game quickly. I wonder if this was in book or just a nicely
>searched out move by Insomniac?



could be a search:

               11     2:43   0.90   1. d6 e6 2. g4 Ng7 3. Ne4 Nc6 4. Nxc5
                                    Nb4 5. Qc4 Qc6 6. Bg2
               11->   2:43   0.90   1. d6 e6 2. g4 Ng7 3. Ne4 Nc6 4. Nxc5
                                    Nb4 5. Qc4 Qc6 6. Bg2
               12     3:05   0.85   1. d6 e6 2. Na4 Qc6 3. Qxc5 Qxc5 4.
                                    Nxc5 b6 5. Ne4 Bg7 6. Bc4 O-O 7. O-O

>
>8/8/8/R3N3/4r1pk/2K5/8/7b w - - bm e5g4; id McTobber99 - Diep;
>
>Here white missed the draw with Nxg4.


yep:
         nss  depth   time  score   variation (1)
         (2)   12->   2.67   0.00   1. Nxg4 Rxg4 <EGTB>
               13     3.17   0.00   1. Nxg4 Rxg4 <EGTB>
         (2)   13->   3.90   0.00   1. Nxg4 Rxg4 <EGTB>
               14     4.41   0.00   1. Nxg4 Rxg4 <EGTB>
         (3)   14->   7.38   0.00   1. Nxg4 Rxg4 <EGTB>
         (2)   15     8.00   0.00   1. Nxg4 Rxg4 <EGTB>
         (3)   15->  13.38   0.00   1. Nxg4 Rxg4 <EGTB>
         (2)   16    14.31   0.00   1. Nxg4 Rxg4 <EGTB>



>
>8/p7/8/1b5B/3k4/4p3/P7/4K3 w - - bm h5e2; id Nimzo 732 - The King;
>

Be2 is the only move I get, but Crafty isn't "happy"...
               14->  16.53  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Be2
                                    Bxe2 8. Kxe2
               15    27.71  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Be2
                                    Bxe2 8. Kxe2 Ke4 <HT>
               15->  29.84  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Be2
                                    Bxe2 8. Kxe2 Ke4 <HT>
               16    43.07  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Bh5
                                    Ke4 8. Be2 Bxe2 9. Kxe2
               16->  47.80  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Bh5
                                    Ke4 8. Be2 Bxe2 9. Kxe2
               17     1:16  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Bh5
                                    Ke4 8. Be2 Bxe2 9. Kxe2 Kd4
               17->   1:19  -3.06   1. Be2 Bd7 2. Kd1 Be6 3. a3 Bc4 4.
                                    Ke1 a5 5. Bf3 Bb5 6. Bg4 a4 7. Bh5
                                    Ke4 8. Be2 Bxe2 9. Kxe2 Kd4



>White makes a nice move setting up a quick draw if black  replies Bxe2, which is
>what happened.
>Black should make white fight harder for a draw by keeping the Bishops on.
>
>5r2/R6P/3Nb1p1/2p2k2/2P2Pp1/2K5/8/8 b - - bm f5f4; id Nimzo 732 - Insomniac;
>
>Looks like Kxf4 is a good fighting move, which black missed and eventually lost.


That is the only move I get:  not a great score of course:

               12     2.06  -1.36   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 g3 6. Qh4+ Kf3 7.
                                    Qe4+ Kf2 8. Qe2+ Kg1 9. Qe3+ Kg2 10.
                                    Qd2+ Rf2 11. Qe3
               12->   2.16  -1.36   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 g3 6. Qh4+ Kf3 7.
                                    Qe4+ Kf2 8. Qe2+ Kg1 9. Qe3+ Kg2 10.
                                    Qd2+ Rf2 11. Qe3
               13     3.39  -1.55   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 Rh5 6. Qf8+ Rf5
                                    7. Qh6+ g5 8. Qh1 Kg3 9. Qd5 Rf3+ 10.
                                    Ke4 Rf4+ 11. Ke5 <HT>
               13->   3.59  -1.55   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 Rh5 6. Qf8+ Rf5
                                    7. Qh6+ g5 8. Qh1 Kg3 9. Qd5 Rf3+ 10.
                                    Ke4 Rf4+ 11. Ke5 <HT>
               14     7.98  -1.55   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 Rh5 6. Qf8+ Rf5
                                    7. Qh6+ g5 8. Qh1 <HT>
         (2)   14->  39.56  -1.55   1. ... Kxf4 2. Nf7 Bxf7 3. Rxf7+ Rxf7
                                    4. h8=Q Rf5 5. Kd3 Rh5 6. Qf8+ Rf5
                                    7. Qh6+ g5 8. Qh1 <HT>


>
>1... Kxf4 2. Nf7 g3 3. h8=Q Rxh8 4. Nxh8 Bf5 5. Rg7 Kg5 6. Re7 g2 7. Re1
>Kf4   now has white having to search for a draw.
>
>1... Kxf4 2. Re7 Rh8 3. Rxe6 Rxh7 is better but still offers black a possible
>draw.



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