Author: John Merlino
Date: 12:16:38 03/02/01
Go up one level in this thread
On March 02, 2001 at 10:10:08, Sune Larsson wrote: > > [D]8/6r1/Pp5p/7k/p7/7K/6P1/R7 w - - 0 2 > > Wotawa 1951 > > Rookending and black is a pawn up. But white can take it back in a minute. > So a draw or what? No, by breaking the rules for "normal" play in a > rookending, the white rook becomes the rebellious hero of the day. > > Test: To find the winning line for white in normal tournament level. > > Sune CM8000 took a while to make up its mind on this one. Is 1.Rb1 the "right" answer? Time Depth Score Positions Moves 0:00 6/7 0.94 44484 1. Rxa4 Ra7 2. Kg3 b5 3. Ra5 Kg6 4. Kf4 b4 0:02 7/8 1.03 180856 1. Rxa4 Ra7 2. Kg3 b5 3. Ra5 Kg6 4. Kf4 b4 5. Ke4 0:03 7/8 1.27 292920 1. Rb1 Kg5 2. Rb5+ Kf6 3. Rxb6+ Ke5 4. Rb7 Rg8 5. Rb5+ Kd6 6. Ra5 Kc6 7. Rxa4 0:07 8/9 1.33 634575 1. Rb1 Kg5 2. Rxb6 Ra7 3. Rb5+ Kf6 4. Ra5 Ke7 5. Rxa4 Kd6 0:17 9/10 1.38 1623748 1. Rb1 Kg5 2. Rxb6 Ra7 3. Rb5+ Kf6 4. Ra5 Ke6 5. Rxa4 Kd5 6. Ra5+ Kc6 7. Kg4 0:34 10/11 1.39 3381724 1. Rb1 Kg5 2. Rxb6 Ra7 3. Rb5+ Kf6 4. Ra5 Ke6 5. Rxa4 Kd7 6. Kg4 Kd6 0:47 10/11 1.81 4770673 1. Ra3 Re7 2. Rg3 a3 3. a7 Rxa7 4. Rg8 Ra4 5. g4+ Rxg4 6. Rxg4 b5 7. Rb4 a2 8. Rxb5+ Kg6 0:58 11/12 1.03 5881376 1. Ra3 Re7 2. Rg3 a3 3. Rxa3 Ra7 4. Kg3 b5 5. Ra5 Kg6 6. Kf3 b4 7. Ke4 1:43 11/12 1.38 10375062 1. Rb1 Kg5 2. Rb5+ Kf4 3. Rxb6 a3 4. Rb5 a2 5. Ra5 Ra7 6. Rxa2 Ke5 7. Kg4 Kd6 4:14 12/13 1.90 25486527 1. Rb1 Kg5 2. Rxb6 Ra7 3. Rb5+ Kf6 4. Ra5 Ke6 5. Kh4 Kd6 6. Kh5 Ra8 7. Rxa4 Rg8 8. a7 jm
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