Author: Drexel,Michael
Date: 04:51:25 12/29/02
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On December 29, 2002 at 05:45:00, John Lowe wrote: >On December 29, 2002 at 00:26:50, Les Fernandez wrote: > >>[D]4k3/8/8/8/8/2P5/1PPP4/4K3 w - - >> >>The above pawn structure to the best of my knowledge can't ever be reached since >>the c3 pawn would have had to come from either b2-c2-d2. Are there alot of >>these type of positions or are there a handful of pawn structures that we know >>can't happen? Perhaps someone knows of a link that discusses this or can shed >>"some" light as to what types of structures I can be made aware of. I am >>working on an idea to increase our data in the C.A.P project for which an >>understanding on reachable pawn positions is important. Any input that you can >>provide me with would be deeply appreciated. It may be that there are so many >>various scenario's that I might just have to leave out this portion of what I am >>trying to do and just work with the other entities but I would prefer to work >>pawns into my idea if possible. >> >>Thanks, >> >It is possible to get, within the rules - not the sensible game - a white pawn >on a2,a3,a4,a5,a6 and a7 > >This will "cost" 15 captures leaving no capturable pieces for the g2 and h2 >pawns. It will involve making king-side black pawns available for capture by >sacrificing white pieces to them - it will take some analysis to discover how >but my guess is that it can be done. > >Migrations bigger than this will be outside the rules. > >Does this help > >>Les ? > >Regards > >John Sorry John but this can not be done: [D] k7/P7/P7/P7/P7/P7/P7/K7 w - - 0 1 This pawn structure can not be reached within the rules. The problem is: you have not enough white pieces available in order to sacrifice them to make all black king-side pawns available.
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