PGN4:
[StartFen4 "Y-0,1,0,1-0,0,0,0-0,0,0,0-9,0,9,0-1-{'wb':true,'dim':'8x8'}-x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,x,x,yI,x,yS,x,yK,x,yG,x,x,x/x,x,x,1,x,1,x,1,x,1,x,x,x,x/x,x,x,x,1,x,1,x,1,x,yγ,x,x,x/x,x,x,1,x,1,x,yI,x,1,x,x,x,x/x,x,x,x,yC,x,1,x,1,x,1,x,x,x/x,x,x,1,x,1,x,1,x,1,x,x,x,x/x,x,x,x,rK,x,rS,x,rI,x,rC,x,x,x/x,x,x,rG,x,1,x,rS,x,rI,x,x,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x"][Variant "FFA"][RuleVariants "CaptureTheKing EnPassant PromoteTo=BCFGIS"][CurrentMove "0"]
Difficulty: 1850.
Themes: Zwischenzug, Pin
Black/yellow to play and get a material edge.