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Saturday, August 27, 2011

Rook endings Part 1.

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The Cut-off King.





{White wins easily, even though Black is to move and the white king is as
offside as possible.}  1... Kb6 (1... b4 2. Kg7 b3 3. Rh3 b2 4.
Rb3 {Black loses the pawn.}) 2. Kg7 Ka5 3. Kf6 Kb4 4. Ke5 Kc4 5. Rh4+ Kc5 6.
Ke4 Kc4 7. Rh8 b4 8. Rc8+ Kb5 9. Kd5 { If the defender's king is behind
his pawn, then the rook wins if it cuts off the king on its fourth rank}





1. Kb6
(1. Rf1 f3 2. Kb7 Kg3 3. Rg1+ Kh2 4. Rb1 Kg2 5. Kc7 f2 6. Kd6 f1=Q 7.
Rxf1 Kxf1 8. Ke7 Ke2)

(1. Rg1+ Kh3 2. Rf1 Kg3 3. Kb6 f3 4. Rg1+ Kh2 5. Rg7 f2
6. Rf7 Kg2 7. Rg7+ Kf3)

(1. Ra4 Kg3 2. Ra5 f3 3. Rg5+ Kh3 4. Rf5 Kg3 5. Kb7 f2
6. Kc7 Kg2 7. Rg5+ Kf3 8. Rf5+ Kg2)


1... Kf3 2. Kc5 Ke4 3. Kd6 f3 4. Rf1 Ke3 5.
Re1+ Kd2 6. Rb1 Ke3 7. Rb3+ Ke2 8. Ke5 






1. d7 {This will lead to draw, insufficient pieces.}
(1. Kd7 Kf6 2. Kc6 Ke6 3.d7 Ke7 4. d8=Q+ Kxd8 5. Kd6 Rf5 6. Ke6 )
1... Rg6+ 2. Ke7 Rg2 3. d8=Q Re2+
4. Kd7 Rd2+ 5. Ke8 Rxd8+ 6. Kxd8 Kf6 7. Kc7 Ke6 8. Kb6