A larger version of the mini forest:
FEN4:
R-0,1,0,1-1,1,1,1-1,1,1,1-0,0,0,0-0-{'pawnBaseRank':0,'wb':true,'dim':'12x12','noCorners':true}-x,x,x,x,x,x,x,x,x,x,x,x,x,x/x,x,yC,x,yY,x,yZ,x,yY,x,yC,x,yK,x/x,yS,x,yI,x,yY,x,yZ,x,yY,x,yB,x,x/x,x,yS,x,yS,x,yG,x,yI,x,yG,x,yI,x/x,yγ,x,yγ,x,yγ,x,yγ,x,yγ,x,yγ,x,x/x,x,1,x,1,x,1,x,1,x,1,x,1,x/x,1,x,1,x,1,x,1,x,1,x,1,x,x/x,x,1,x,1,x,1,x,1,x,1,x,1,x/x,1,x,1,x,1,x,1,x,1,x,1,x,x/x,x,rγ,x,rγ,x,rγ,x,rγ,x,rγ,x,rγ,x/x,rI,x,rG,x,rI,x,rG,x,rS,x,rS,x,x/x,x,rB,x,rY,x,rZ,x,rY,x,rI,x,rS,x/x,rK,x,rC,x,rY,x,rZ,x,rY,x,rC,x,x/x,x,x,x,x,x,x,x,x,x,x,x,x,x
Rules:
Capture the king: "True"
Pawns promote to: BCGISYZ
Promotion Rank: "13th"
N+ Check: Disabled
Setup Material: None
Stalemate: "Stalemated player loses"