ChessPub Forum - Opposite colored bishops endgame

Matemax God Member Offline Chesspub gives you strength! Posts: 1302 Joined: 11/04/07	Re: Opposite colored bishops endgame Reply #12 - 04/25/11 at 18:27:12	Post Tools	Print Post
	Smyslov_Fan wrote on 04/25/11 at 18:20:11: Matemax wrote on 04/02/11 at 10:27:35: Quote: I don't know how to play this game, No problem, introduction offer here for 100 Euros - you can pay via paypal - just send me a personal message sincerly Matemax I deleted the original post because it contained advertisements. ~SF I knew this guy was just spamming and therefore made an offer he could not refuse...


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Smyslov_Fan God Member Correspondence fan Offline Progress depends on the unreasonable man. ~GBS Posts: 6902 Joined: 06/15/05	Re: Opposite colored bishops endgame Reply #11 - 04/25/11 at 18:20:11	Post Tools	Print Post
	Matemax wrote on 04/02/11 at 10:27:35: Quote: I don't know how to play this game, No problem, introduction offer here for 100 Euros - you can pay via paypal - just send me a personal message sincerly Matemax I deleted the original post because it contained advertisements. ~SF


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chessy Full Member Offline I love ChessPublishing.com! Posts: 189 Location: Europe Joined: 12/17/04	Re: Opposite colored bishops endgame Reply #10 - 04/25/11 at 16:44:35	Post Tools	Print Post
	i am wondering about the book and couldnt find any review on the net. Secrets of Opposite-Coloured Bishop-Endings by Andras Meszaros Has anyone read it and can recommend it? thx 4 helping


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Matemax God Member Offline Chesspub gives you strength! Posts: 1302 Joined: 11/04/07	Re: Opposite colored bishops endgame Reply #9 - 04/02/11 at 10:27:35	Post Tools	Print Post
	Quote: I don't know how to play this game, No problem, introduction offer here for 100 Euros - you can pay via paypal - just send me a personal message sincerly Matemax


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gzt YaBB Newbies Offline I am a patzer. Posts: 39 Location: America Joined: 03/24/11 Gender:	Re: Opposite colored bishops endgame Reply #8 - 03/31/11 at 21:14:25	Post Tools	Print Post
	AlanG wrote on 03/31/11 at 17:17:28: gzt wrote on 03/31/11 at 17:00:47: This specific position doesn't look terribly pleasant because 1. ...Bd6 2.Kd5 and Black has to leave the diagonal and White can continue his plan But Kd5 doesn't threaten anything, so Black can move the bishop anywhere and then back to d6 next move. You're right, thank you. I thought that was the case but hadn't yet verified there weren't enough tempi to take advantage of the departure from the diagonal. Well, I suppose the position goes back into my hall of shame because I'm sure I could have steered the game to something like this position rather than the first (losing) position - I don't remember any of the prior positions exactly, though.


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AlanG Full Member Offline Posts: 159 Joined: 10/16/08	Re: Opposite colored bishops endgame Reply #7 - 03/31/11 at 17:17:28	Post Tools	Print Post
	gzt wrote on 03/31/11 at 17:00:47: This specific position doesn't look terribly pleasant because 1. ...Bd6 2.Kd5 and Black has to leave the diagonal and White can continue his plan But Kd5 doesn't threaten anything, so Black can move the bishop anywhere and then back to d6 next move.


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Re: Opposite colored bishops endgame
Reply #6 - 03/31/11 at 17:00:47

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So if the bishop is on the a3-c1 or a3-f8 diagonal, is it drawn? In the first case, Black plays ...Ba3 and White can't dislodge Black. In the second case, White's idea of pushing the a-pawn doesn't work as well because the bishop protects the black pawn on a3 after bxa3. I suppose it would help to be concrete. Say we start with the bishop on c5 rather than c3 as a worst case...

This specific position doesn't look terribly pleasant because 1. ...Bd6 2.Kd5 and Black has to leave the diagonal and White can continue his plan. However, with the bishop starting on d6 or f8, I think 1. ...Kf6 should hold, right? With the bishop starting on d6 after 1. ...Kf6:

I'll fiddle around with this some more, I guess...

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gzt YaBB Newbies Offline I am a patzer. Posts: 39 Location: America Joined: 03/24/11 Gender:	Re: Opposite colored bishops endgame Reply #5 - 03/30/11 at 17:50:36	Post Tools	Print Post
	Stefan Buecker wrote on 03/30/11 at 17:21:04: Looks like an easy win for White, no? 1...Bd2 2.Kb5 Kf6 3.Ka4 Ke5 4.a3 bxa3 5.Kxa3 +- (Nalimov). 2. ... Kd6 3.Ka4 Kc5 4.a3 looks better but still loses "easily". I looked at it earlier but for some reason dismissed it. I think I should look into why I dismissed it. Quite educational. Now I don't feel so bad. So many mood swings in one day...


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Klick God Member Offline Posts: 528 Joined: 01/31/03	Re: Opposite colored bishops endgame Reply #4 - 03/30/11 at 17:33:54	Post Tools	Print Post
	Hard to argue with that idea Stefan. Black never gets to blockade. White wins.

	There just isn't enough televised chess - DAVID LETTERMAN
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Stefan Buecker God Member Offline Posts: 1386 Location: Germany Joined: 02/11/09 Gender:	Re: Opposite colored bishops endgame Reply #3 - 03/30/11 at 17:21:04	Post Tools	Print Post
	Looks like an easy win for White, no? 1...Bd2 2.Kb5 Kf6 3.Ka4 Ke5 4.a3 bxa3 5.Kxa3 +- (Nalimov).


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gzt YaBB Newbies Offline I am a patzer. Posts: 39 Location: America Joined: 03/24/11 Gender:	Re: Opposite colored bishops endgame Reply #2 - 03/30/11 at 16:52:00	Post Tools	Print Post
	Klick wrote on 03/30/11 at 16:27:03: You can play Bd2-Kf6-Bc1(if allowed)-Ba3, blocking everything. Theres nothing white can do to progress from this blockade except push a4 at some point but this should be drawn as seen from 1..Bd2 2.Kb5 Kf6 3. a4 bxa3 4. b4 a2 getting the f6-pawn when the draw is trivial. Yeah, I played around with this a bit more and came across a lot of similar lines and came to a similar conclusion. Thanks! Now I can just put this in my hall of shame to guarantee I never miss this kind of half point again.


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Klick God Member Offline Posts: 528 Joined: 01/31/03	Re: Opposite colored bishops endgame Reply #1 - 03/30/11 at 16:27:03	Post Tools	Print Post
	You can play Bd2-Kf6-Bc1(if allowed)-Ba3, blocking everything. Theres nothing white can do to progress from this blockade except push a4 at some point but this should be drawn as seen from 1..Bd2 2.Kb5 Kf6 3. a4 bxa3 4. b4 a2 getting the f5-pawn when the draw is trivial.

	There just isn't enough televised chess - DAVID LETTERMAN
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Opposite colored bishops endgame
03/30/11 at 15:10:34

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I played a 10 minute game over lunch and ended up in the following opposite-colored bishops endgame. I was Black and down two pawns. I lost and think it's probably a loss, but am at a loss for "proving" it either way. I know there were probably drawing resources, being a BOC endgame.

After ...Bd2 or ...Be1, my thoughts were that White wants to get to b1 and push the a-pawn, but Black could either plan on being in a position to do bxa3 and Bb4, which causes some annoying problems, or (if Black did Bd2) sneak around to a3. So I think what is really needed is getting to king around to the kingside and the bishop onto the b1-h7 diagonal and then pushing the a-pawn. I really don't quite know where to begin rigorously analyzing this. I plan on spending a couple hours playing this ending against the computer from both sides this weekend. It's rather obvious that it's all over when White gets two passed pawns, but it's hard to get there. Any recommendations for strategies or further readings?

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