Author: Paulo Soares
Date: 04:30:19 07/01/00
Go up one level in this thread
On June 30, 2000 at 19:47:36, Simon Finn wrote:
(sniped)
>Black's King gets driven back to d5, so it's simplest for Black
>to answer 1. Rc4+ with 1.. Kd5, giving the following position:
>
>[D]8/8/8/p2k4/2R5/1P6/1K6/3q4 w - - 0 1
>
>Now Black's winning chances consist of either
>
>(1) Exchanging pawns to reach a winning QvR ending, or
>(2) Sacrificing the a-pawn to reach a winning QvR+P ending.
>
>To prevent plan (1), White should leave his Rook on c4, to anwer a4 with Rxa4.
>This allows Black to try plan (2).
>
>2. Ka2 Qd2+ 3. Kb1 Qf2 4. Ka1 Qe2 5. Kb1 Qd2 6. Ka1
>
>[D]8/8/8/p2k4/2R5/1P6/3q4/K7 b - - 0 1
(sniped)
>
>Simon
I think that 6. Ka1 is a mistake, because after 6 ...a4 7. Rxa4 Qc2!(instead
7...Qc3+) should win.
I didn't analyze other possibilities for the sixth white move, maybe
there are some better move.
Original Position:
8/8/8/p7/4k3/1P6/1KR5/3q4 w - - 0 1
1. Rc4+ Kd5 2. Ka2 Qd2+ 3. Kb1 Qf2 4. Ka1 Qe2 5. Kb1 Qd2 6. Ka1 a4 7. Rxa4 Qc2!
8. Ra5+ Kc6 9. Ra6+ Kb7 10. Ra3 Kc7 11. Ra7+ (11. b4 Kb6 12. Ra5 Qc3+ 13. Ka2
Qxb4 {-#16/9}) 11... Kb8 12. Ra3 Kb7 13. b4 Kb6 14. Ra5 (14. b5 Qc1+ 15. Ka2
Kxb5 {-#18/10}) (14. Rg3 Kb5) 14... Qc3+ 15. Ka2 Qxb4 {-#16/10}
Paulo Soares, from Brazil
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