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Subject: Re: Testposition - Bronstein

Author: Robert Hyatt

Date: 05:46:55 03/16/01

Go up one level in this thread


On March 16, 2001 at 06:34:23, Sune Larsson wrote:

>
>  [D]2r5/1p1k1p2/p2p2p1/P1PPnp1p/1P1K1N1P/5P2/4R1P1/8 w - - 0 1
>
>  Bronstein-Olafsson, Portoroz 1958
>
>
>  Here white coasts to victory by eliminating black's active knight.
>  In exchange for the rook he gets a)knight+pawn b)4-2 pawns on the
>  queenside  c)a penetrating king  d)a passer. The game went like this:
>
>  1.Rxe5! dxe5 2.Kxe5 Re8+
>
>  (The king's incursion cannot be prevented.)
>
>  3.Kf6 Re3  (a forlorn foray)  4.Kxf7 Rb3 5.Nxg6 Rxb4 6.Ne5+ Kc8
>  7.d6 Rb2 8.Ke8! Rd2 9.Ng6 Kb8 10.g3 Rd1 11.Ne7  1-0
>
>
>  Test: Any horse killing program out there? ;)
>
>  Sune


Crafty finds it instantly, loses it for a few seconds, then comes back to
it permanently:

                5     0.11   0.90   1. Rxe5 dxe5+ 2. Kxe5 Re8+ 3. Kf6 Re7
                                    4. d6
                5->   0.12   0.90   1. Rxe5 dxe5+ 2. Kxe5 Re8+ 3. Kf6 Re7
                                    4. d6
                6     0.14   1.07   1. Rxe5 dxe5+ 2. Kxe5 Re8+ 3. Kf6 Rf8
                                    4. d6 g5
                6->   0.21   1.07   1. Rxe5 dxe5+ 2. Kxe5 Re8+ 3. Kf6 Rf8
                                    4. d6 g5
                7     0.27   1.16   1. Rxe5 dxe5+ 2. Kxe5 Rf8 3. Kf6 Kc8
                                    4. d6 Kd7
                7->   0.37   1.16   1. Rxe5 dxe5+ 2. Kxe5 Rf8 3. Kf6 Kc8
                                    4. d6 Kd7
                8     0.44   1.13   1. Rxe5 dxe5+ 2. Kxe5 Ke7 3. d6+ Kd7
                                    4. Kf6 Rf8 5. Nd5 Re8
                8     0.54   1.43   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Rxg2 5. Nf8+ Ke8
                8->   0.62   1.43   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Rxg2 5. Nf8+ Ke8
                9     0.75   1.50   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rg8
                                    4. Ne6 Re8 5. g3 Rc8
                9->   0.92   1.50   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rg8
                                    4. Ne6 Re8 5. g3 Rc8
               10     1.12   1.43   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Re8+
                                    4. Ne6 Kc8 5. g3 Kd7 6. f4 Rc8
               10->   1.46   1.43   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Re8+
                                    4. Ne6 Kc8 5. g3 Kd7 6. f4 Rc8
               11     1.90   1.66   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Re2+ 5. Kxf5 Rxg2 6. Nf4 Rh2
                                    7. Nxh5 Kxd6
               11->   2.72   1.66   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Re2+ 5. Kxf5 Rxg2 6. Nf4 Rh2
                                    7. Nxh5 Kxd6
               12     3.50   1.66   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Re2+ 5. Kxf5 Rxg2 6. Nf4 Rh2
                                    7. Nxh5 Kxd6
               12->   6.70   1.66   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Rc2
                                    4. Nxg6 Re2+ 5. Kxf5 Rxg2 6. Nf4 Rh2
                                    7. Nxh5 Kxd6
               13     9.29   1.28   1. cxd6 f6 2. Rxe5 fxe5+ 3. Kxe5 Re8+
                                    4. Kf6 Kxd6 5. Kxg6 Ke5 6. Nxh5 Rh8
                                    7. Ng7 Rxh4 8. Nxf5 Rxb4
               13    12.17     ++   1. Rxe5!!
               13    21.50   1.86   1. Rxe5 dxe5+ 2. Kxe5 Rd8 3. d6 Kc6
                                    4. Kf6 Kb5 5. Kxf7 Kxb4 6. Ne6 Rh8
                                    7. d7 Rh7+ 8. Ke8 Rh8+ 9. Nf8
               13->  24.47   1.86   1. Rxe5 dxe5+ 2. Kxe5 Rd8 3. d6 Kc6
                                    4. Kf6 Kb5 5. Kxf7 Kxb4 6. Ne6 Rh8
                                    7. d7 Rh7+ 8. Ke8 Rh8+ 9. Nf8
               14    30.28   1.94   1. Rxe5 dxe5+ 2. Kxe5 Rd8 3. d6 Rh8
                                    4. Kf6 Rh7 5. Nh3 Ke8 6. Ng5 Rh8 7.
                                    Ke5 Rf8 8. Kd5
               14->  37.06   1.94   1. Rxe5 dxe5+ 2. Kxe5 Rd8 3. d6 Rh8
                                    4. Kf6 Rh7 5. Nh3 Ke8 6. Ng5 Rh8 7.
                                    Ke5 Rf8 8. Kd5
               15    57.27   1.86   1. Rxe5 dxe5+ 2. Kxe5 Ke8 3. d6 Rd8
                                    4. Nd5 Kf8 5. Nf6 Ra8 6. g3 Kg7 7.
                                    Nd5 Re8+ 8. Ne7 Kh6 9. Kd5 <HT>
               15->   1:18   1.86   1. Rxe5 dxe5+ 2. Kxe5 Ke8 3. d6 Rd8
                                    4. Nd5 Kf8 5. Nf6 Ra8 6. g3 Kg7 7.
                                    Nd5 Re8+ 8. Ne7 Kh6 9. Kd5 <HT>


The above on my PIII/750 notebook



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