Author: Sune Larsson
Date: 22:47:34 12/28/02
Go up one level in this thread
On December 28, 2002 at 18:10:52, Joachim Rang wrote:
>On December 28, 2002 at 13:16:49, Sune Larsson wrote:
>
>>
>> [D]1R6/6k1/1P3p2/6p1/6Pp/1r5P/5PK1/8 b - - 0 1
>>
>> This position happened in GM Serper-GM Ivanov, New York 1996.
>> Black has one way to draw it - by playing 1.-Rb2!. King moves
>> loses since the white king then can sneak to the queenside.
>> By the way, if white pushes the b-pawn too early to b7, it's drawn.
>> The premature push takes away a vitale hiding square for the white
>> king, and leaves him open to checks from behind. Game with comments
>> below:
>>
>>
>> Test: Find and play 1.-Rb2!
>>
>>
>>[Event "New York"]
>>[Site "New York"]
>>[Date "1996.??.??"]
>>[Round "?"]
>>[White "Serper, Grigory"]
>>[Black "Ivanov, Alexander"]
>>[Result "1-0"]
>>[WhiteElo "2535"]
>>[BlackElo "2525"]
>>[SetUp "1"]
>>[FEN "1R6/6k1/1P3p2/6p1/6Pp/1r5P/5PK1/8 b - - 0 1"]
>>[PlyCount "32"]
>>[EventDate "2002.12.27"]
>>
>>1... Kh7 $4 {It's easy to see that the weak kingside pawns don't leave white
>>many chances to win, but amazingly this move loses. After the correct} (1...
>>Rb2 $1 2. Kf1 Rb3 $1 {white wouldn't be able to make any progress without
>>losing his h3 pawn on the spot.}) 2. f3 $1 {Now the white king is ready to
>>sneak (f2-e2-de-c2) to the queenside. The loss of the f3 pawn shouldn't bother
>>him, because black doesn't get a passed pawn.} 2... Kg7 {If} (2... Rb2+ {then}
>>3. Kf1 {and the white king still gets to the queenside.}) 3. Kf2 Kh7 4. Ke2 Kg7
>>5. Kd2 $1 Rxf3 {A desperate attempt to create counterplay didn't work:} (5...
>>f5 6. gxf5 Rxf3 7. b7 Rb3 8. f6+ {and wins.}) 6. Kc2 $1 {
>>Now black has no time to steal the h3 pawn because of 7.b7.} 6... Rf2+ 7. Kc3
>>Rf1 8. Rd8 $1 Rb1 9. Rd6 Kf7 (9... f5 10. gxf5 g4 11. hxg4 h3 12. Rg6+ Kh7 13.
>>g5 {again didn't help.}) 10. Kc4 Ke7 11. Rc6 Rb2 12. Kc5 $1 Rb3 13. Rd6 $1 {
>>The threat Rd6-d4-b4 finishes the game.} 13... Rxh3 {The pawn ending after} (
>>13... Rc3+ 14. Kb4 Kxd6 (14... Rc1 15. Rd3 $18) 15. Kxc3 f5 16. gxf5 g4 17. f6
>>gxh3 18. b7 Kc7 19. b8=Q+ Kxb8 20. f7 {would be lost for black anyway.}) 14. b7
>>Rc3+ 15. Kb4 Kxd6 16. b8=Q+ Rc7 17. Qd8+ 1-0
>>
>>
>>/s
>
>
>are you sure with your analysis? I did a quick look and found some interesting
>variations: what about 1...Kf7? Does this draw also?
The comments were from Serper. 1.-Kf7!? looks interesting. White could
end up in a rook ending 3-2 pawns on the kingside. At least he cannot
enter the variation you mentioned below. Right now I'm not sure white
can win it after 1.-Kf7!? - but rook endings are tricky...
/s PS Check out Rilton Cup http://www.schackcentralen.com/
some interesting chess going on right now.
>
>A possible line could be:
>
>1...Kf7 2.f3 Rb2+ 3.Kf1 Ke6 4.Ke1 Ke5 5.Kd1 Kf4 -+
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