1r1qkbnr/pb1npp2/7p/Pp1p2p1/2P2P2/5KPN/1P1PP2P/R1BQ1BR1 w k - 0 12
FEN state: 1r1qkbnr/pb1npp2/7p/Pp1p2p1/2P2P2/5KPN/1P1PP2P/R1BQ1BR1 w k - 0 12 ; Best move: c4b5
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, black knight at d7, black pawn at e7 and black pawn at f7. Black pawn at h6. White pawn at a5, black pawn at b5, black pawn at d5 and black pawn at g5. White pawn at c4 and white pawn at f4. White king at f3, white pawn at g3 and white knight at h3. White pawn at b2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 12. White to move.