Author: John Lowe
Date: 02:45:00 12/29/02
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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
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