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Subject: Re: Test Position = Dely vs Hajtun [Hungary, 1954] Qh6 or Kg2

Author: Frank E. Oldham

Date: 19:25:38 06/15/04

Go up one level in this thread


On June 15, 2004 at 14:54:01, José Antônio Fabiano Mendes wrote:

>    Dely vs Hajtun [Hungary, 1954]
>    [D]b1n1r1k1/2q2p1p/p4Pp1/1pBP4/4B1P1/2P1Q3/P4K1P/4R3 w
>   1. Qh6!! Qxc5+ 2. Re3! Qf8 3. Bxg6! Qxh6 4. Rxe8+ Qf8 5. Bxg7+! Kxh7 6. Rxf8
>   and White has an easily won ending. "Chess Tactics" [by GM Kotov, 1983]
>   But is this combination really correct? Maybe 1. Kg2 is the best move here.

crafty19.10 finds Kg2 quickly and sticks with it, score reaching 7.10 in ply 17
                7     0.16     ++   1. Qh6!!
                7     0.20   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                7->   0.24   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                8     0.30   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                8->   0.34   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                9     0.44   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                9->   0.54   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2 (s=2)
               10     0.69   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
               10->   1.72   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2 (s=5)
               11     2.14   3.60   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 (s=4)
               11     6.78     ++   1. Kg2!!
               11    11.89   5.37   1. Kg2 Rxe4 2. Qh6 Rxg4+ 3. Kh3 Rh4+
                                    4. Kxh4 Qxh2+ 5. Kg4 Qg2+ 6. Kf4 g5+
                                    7. Qxg5+ Qxg5+ 8. Kxg5 h5 9. Re8+ Kh7
                                    10. d6 Nxd6 11. Bxd6 (s=3)
               11->  12.40   5.37   1. Kg2 Rxe4 2. Qh6 Rxg4+ 3. Kh3 Rh4+
                                    4. Kxh4 Qxh2+ 5. Kg4 Qg2+ 6. Kf4 g5+
                                    7. Qxg5+ Qxg5+ 8. Kxg5 h5 9. Re8+ Kh7
                                    10. d6 Nxd6 11. Bxd6
               12    14.54     ++   1. Kg2!!
               12    22.45   6.48   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Qf4 Rd7 7.
                                    g5 Bb7
               12->  24.47   6.48   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Qf4 Rd7 7.
                                    g5 Bb7
               13    29.02   6.58   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Qf4 Rd7 7.
                                    g5 Bb7 8. Kf2
               13->  32.91   6.58   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Qf4 Rd7 7.
                                    g5 Bb7 8. Kf2
               14    50.00   6.55   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Re7 Re8 7.
                                    Rd7 Nc4 8. Qf4 Ne3+ 9. Kg3
               14->   1:28   6.55   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nd6 6. Re7 Re8 7.
                                    Rd7 Nc4 8. Qf4 Ne3+ 9. Kg3 (s=3)
               15     1:55   6.58   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rc8 7.
                                    Qf6 Nxd5 8. Qxa6 Rc2+ 9. Kg3 Nc7 (s=2)
               15->   2:42   6.58   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rc8 7.
                                    Qf6 Nxd5 8. Qxa6 Rc2+ 9. Kg3 Nc7 (s=2)
               16     3:52   6.94   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rc8 7.
                                    Qf6 Nxd5 8. Qxa6 Rb8 9. Qd6 Rb6
               16->   8:33   6.94   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rc8 7.
                                    Qf6 Nxd5 8. Qxa6 Rb8 9. Qd6 Rb6 (s=2)
               17    16:13   7.10   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rf8 7.
                                    Re7 h6 8. Qe5 Rc8 9. Be4 Nc4 10. Qf4
               17->  31:22   7.10   1. Kg2 Qd8 2. Qh6 Qxf6 3. Bf3 Rd8 4.
                                    Bd4 Qxd4 5. cxd4 Nb6 6. Qg5 Rf8 7.
                                    Re7 h6 8. Qe5 Rc8 9. Be4 Nc4 10. Qf4
                                    (s=2)

forcing a search of Qh6 gets us to an eventual score of 3.98 in ply 17
White(1): search Qh6
                9     0.09   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
                9->   0.09   3.49   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Bxa2
               10     0.17   3.60   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2
               10->   0.17   3.60   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2
               11     0.31   3.60   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2
               11->   0.31   3.60   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2
               12     1.55   3.70   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Ra8
               12->   1.55   3.70   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Ra8
               13     3.10   3.59   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. g5 Bxa2 9. Rg8+
                                    Kf5 10. Ra8
               13->   3.10   3.59   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. g5 Bxa2 9. Rg8+
                                    Kf5 10. Ra8
               14     7.29   3.79   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Rd6
                                    a5 10. h4
               14->   7.29   3.79   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Rd6
                                    a5 10. h4
               15    15.65   3.78   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Ra8
                                    Be6 10. h3 Kxf6 11. Rxa6
               15->  15.66   3.78   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rd8 Bxa2 9. Ra8
                                    Be6 10. h3 Kxf6 11. Rxa6
               16    39.82   3.83   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rb8 Kg5 9. h3 Kxf6
                                    10. Rb6+ Ke5 11. Rxa6 Be4
               16->  39.82   3.83   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rb8 Kg5 9. h3 Kxf6
                                    10. Rb6+ Ke5 11. Rxa6 Be4
               17     1:26   3.98   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rb8 Kg5 9. h3 Kxf6
                                    10. Rb6+ Ke5 11. Rxa6 f6 12. Ke3
               17->   1:26   3.98   1. Qh6 Qxc5+ 2. Re3 Qf8 3. Bxg6 Qxh6
                                    4. Rxe8+ Qf8 5. Bxh7+ Kxh7 6. Rxf8
                                    Bxd5 7. Rxc8 Kg6 8. Rb8 Kg5 9. h3 Kxf6
                                    10. Rb6+ Ke5 11. Rxa6 f6 12. Ke3
Frank



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