# doubled

The`doubledpawns`

filter has a value equal to the set of squares on which there are doubled pawns in the position:
doubledpawns

The `doubledpawns`

filter is equivalent to

notransform flipcolor{ P&vertical P}

`doubledpawns`

filter has a value equal to the set of squares on which there are doubled pawns in the position:
doubledpawns

The `doubledpawns`

filter is equivalent to

notransform flipcolor{ P&vertical P}