Author: Sylvain Renard
Date: 17:01:16 08/26/00
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On August 26, 2000 at 05:22:00, Joshua Lee wrote:
>For some strange reason it doesn't mate like it says it will in a Krp VS Kr.
>The position is W: Kg8, Rf3, Pg7
>B: Ke7,Rh1 Black to move this is what happens.......
>
>1...Rh2#21 2.Rf4 #21 Rh3 #20
>3. Re4+ #20 Kd6 #19 4. Kf7 #19 Rf3+#18
>5. Kg6 #18 Rc3 #17 6. Rg4 #17 Rc8 #16
>7. Kf6 #16 Rg8 #15 8. Rg5 #15 Re8 #14
>9. Rg6 #16 Kd5 #15 10. Rg4+ #16 Kc4
>11. Rg4+ #16 Kc5 #15 12. Rg5+ Kc4 #15
>13. Rg4+#16 Kc5 #15 14. Rg5+ #16 Kc4 0.00 1/2-1/2
>
>even with the small tbs file it still does the same thing....Thankyou
Hello,
You had an excellent answer from Uri.
It is a well known problem. Most of the time, the files kqrvkr
will be sufficient. But in some rare positions, an underpromotion
is the only move get closer of mate.
So the only way to avoid theses problems is to have _all_ 5 pieces
files!
Best regards,
Sylvain
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