Author: Stuart Cracraft
Date: 11:33:30 03/01/06
Go up one level in this thread
On February 28, 2006 at 14:33:53, Robert Hyatt wrote: >On February 28, 2006 at 13:12:58, Stuart Cracraft wrote: > >>Weak pawns >> >>1. cannot advance without the destination square being >> attacked by enemy pawns moreso than friendly pawns >> >>2. if pawn attacks outnumber pawn defenses by 1, it is lightly weak. >> >>3. if pawn attacks outnumber pawn defenses by >1, it is heavily weak. >> >>4. current defended/undefended status of pawn in consideration does not matter. >> > >I would not do that one. If a pawn is currently undefended by another pawn, and >it can't safely advance to where it is defended by more pawns than it is >attacked by, then it is weak. Classic example is black pawn at c5, white pawns >at c4 and b3. b3 pawn is often called "backward" but it is just a case of a >pawn not defended by a pawn, and can't advance safely to where it is defended by >another pawn. It's weak and can easily be lost. > > > > >>5. current half-open-file or not status of pawn does not matter. > >Depends. If the pawn is weak, and on a half-open file (no enemy pawns in front >of it) and the opponent has a rook, then that pawn is weaker than if there was >an enemy pawn in front of it blocking the rook attack. > > > > >> >>Anything you wish to add or change to the above? >> >>What kind of penalty would you put on this kind of weak pawn? >> >>Does it have any tie-in to game-stage or other modifiers (such as >>undefended further defining it as a backward and additionally also >>on half-open then as dangerously backward.) >> >>Thanks, >> >>Stuart > >The game stage is tough to analyze. As the game progresses, weak pawns become >more of an issue, until the king and pawn endgame when they are often decisive >and are lost... > >The "value" is very subjective and depends on the rest of the evaluation. The >rule of thumb is to make it big enough to not create them, but not so big that >you will wreck your position even worse while avoiding creating them.... Great stuff - reimplementing per now. Thanks - Stuart
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