Help for this position

Discussion about development of draughts in the time of computer and Internet.
ildjarn
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Real name: Joost de Heer

Re: Help for this position

Post by ildjarn » Sat Apr 17, 2010 18:39

Ed Gilbert wrote:The position is a white win.

[FEN "W:W15,31,32,33,38,44,45:B4,9,10,17,19,22,34."]
1. 44-40 34-39 2. 33x44 9-13 3. 32-27 13-18 4. 44-39 ...

If you post the analysis that is suggesting a draw I can show where kingsrow deviates.

-- Ed
Analysis by Adri Geurts: 44-40 (34-39, 10-14) 32-27 (22-28) 44-39 (28-32) 27-22, 22x11 (34-39) 40-34, 11-07 (30-34) 07-02 (09-13) 02-11 (19-24) 31-27 (14-19) 11-50 (19-23) 27-22 (24-30) 22-17 (30-35) 17-11 (23-28, 04x13) 15-10 (34-39) 10-04 (13-19) 04-10 (19-24)=
Lasst die Maschinen verhungern, Ihr Narren...
Lasst sie verrecken!
Schlagt sie tot -- die Maschinen!

TAILLE
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Location: FRANCE

Re: Help for this position

Post by TAILLE » Sat Apr 17, 2010 19:47

Hi Ed.

Game Kalmakov-Georgiev (Russian Championship 2010)
Image
Black to play

In the above position Georgiev (black) played
45...25-30 46.34x14 03-09 47.14x03 11-16 48.03x21 16x38
reaching the following position
Image
white to play

My question is the following. Is it possible for white to obtain the draw ?

The real game continued by :
49.26-21 38-43?? (I think it is a mistake; the only chance in order to win is 38-42) 50.21-16 43-48 51.31-27?? (a blunder. the correct move is 40-34=).

In the above diagram the best move is perhaps 31-27 but the result is rather uncertain for Damy.
Gérard

Ed Gilbert
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Re: Help for this position

Post by Ed Gilbert » Sat Apr 17, 2010 21:56

ildjarn wrote:Analysis by Adri Geurts: 44-40 (34-39, 10-14) 32-27 (22-28) 44-39 (28-32) 27-22, 22x11 (34-39) 40-34, 11-07 (30-34) 07-02 (09-13) 02-11 (19-24) 31-27 (14-19) 11-50 (19-23) 27-22 (24-30) 22-17 (30-35) 17-11 (23-28, 04x13) 15-10 (34-39) 10-04 (13-19) 04-10 (19-24)=
After 44-40 34-29 33x44 10-14 now 32-27 only draws. White must play 44-39 to win.

[FEN "W:W15,31,32,33,38,44,45:B4,9,10,17,19,22,34."]
1. 44-40 34-39 2. 33x44 10-14 3. 44-39 17-21(A) 4. 31-26 22-27 5. 26x17 27-31 6. 17-11 31-36 WW

(A) 9-13 4. 38-33 19-24 (B,C) 5. 32-27 WW

(B) 19-23 5. 32-27 WW

(C) 4-9 5. 31-26 WW

-- Ed

Ed Gilbert
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Re: Help for this position

Post by Ed Gilbert » Sat Apr 17, 2010 22:35

TAILLE wrote:My question is the following. Is it possible for white to obtain the draw ?
Gerard, yes 31-27 certainly draws. 31-27 38-42 35-30 42-48 30-25 ... draw.

-- Ed

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steenslag
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Re: Help for this position

Post by steenslag » Sun Apr 18, 2010 13:41

Ed Gilbert wrote:
ildjarn wrote:Analysis by Adri Geurts: 44-40 (34-39, 10-14) 32-27 (22-28) 44-39 (28-32) 27-22, 22x11 (34-39) 40-34, 11-07 (30-34) 07-02 (09-13) 02-11 (19-24) 31-27 (14-19) 11-50 (19-23) 27-22 (24-30) 22-17 (30-35) 17-11 (23-28, 04x13) 15-10 (34-39) 10-04 (13-19) 04-10 (19-24)=
After 44-40 34-29 33x44 10-14 now 32-27 only draws. White must play 44-39 to win.

[FEN "W:W15,31,32,33,38,44,45:B4,9,10,17,19,22,34."]
1. 44-40 34-39 2. 33x44 10-14 3. 44-39 17-21(A) 4. 31-26 22-27 5. 26x17 27-31 6. 17-11 31-36 WW

(A) 9-13 4. 38-33 19-24 (B,C) 5. 32-27 WW

(B) 19-23 5. 32-27 WW

(C) 4-9 5. 31-26 WW

-- Ed
Thank you, you saved Arjen Timmer's problem.

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