Author: James T. Walker
Date: 04:58:09 10/29/99
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On October 28, 1999 at 21:13:18, Robert Hyatt wrote: >On October 28, 1999 at 15:49:14, James T. Walker wrote: > >>On October 27, 1999 at 14:43:10, Robert Hyatt wrote: >> >>>On October 27, 1999 at 11:36:25, Andrew Williams wrote: >>> >>>>On October 27, 1999 at 11:07:43, Robert Hyatt wrote: >>>> >>>>>On October 27, 1999 at 06:25:31, Andrew Williams wrote: >>>>> >>>>>>On October 27, 1999 at 02:59:52, James Robertson wrote: >>>>>> >><snip> >>>that was an obvious one for explanation. try white pawns at d2/e2, black pawns >>>at a7 and c7. This is a classic zug problem, because black will blockade the >>>white pawns, and white finds himself strangely unable to capture either of the >>>black pawns because of something like pa5/c5, and if white plays Ka3, c4 makes >>>the king retreat (kxa5 c3 and it is over). The further apart the pawns are, >>>the easier it is to win. But even separated by 1 file as above it is a trivial >>>exercise. >>> >>>Roman watched "cptnbluebear" win several games with this theme, and pointed out >>>the error. I fixed it and it hasn't lost like that yet. >> >>Hello Bob, >>Can you explain this further? I'm confused and I'm too interested to let this >>pass. With pawns on d2/e2 and black on a7/c7 it would seem white can ignore the >>c7 pawn because of the pawn on d2 and just attack the a7 pawn. Can you give me >>a real position and variation to explain what you meant? >>Thanks, >>Jim Walker > > >Sorry... the danger of posting when my head is full of flu. > >black: pawns at a7/c7 >white pawns at e2/f2 > >now you get the idea. White has a problem with the two pawns. Black can >easily blockade the two white pawns and stop them both. And black can't >get zugged because he slides diagonally between the two blockade squares for >the white pawns. > >It was obvious after he mentioned it, but I had not thought to code this. > >The problem crafty had was it thought white was _better_. After all, white >had two connected passers. Thanks Bob, Hope you get better soon. My wife has the flu and it's seems to be the worst type of flu I've ever seen. Jim Walker
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