rn1qkbr1/pb1pp3/1pp5/N5Pp/3Nn3/PP3p2/2PPBPPR/1RBQK3 w q - 8 16
FEN state: rn1qkbr1/pb1pp3/1pp5/N5Pp/3Nn3/PP3p2/2PPBPPR/1RBQK3 w q - 8 16 ; Best move: a5b7
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black bishop at b7, black pawn at d7 and black pawn at e7. Black pawn at b6 and black pawn at c6. White knight at a5, white pawn at g5 and black pawn at h5. White knight at d4 and black knight at e4. White pawn at a3, white pawn at b3 and black pawn at f3. White pawn at c2, white pawn at d2, white bishop at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at b1, white bishop at c1, white queen at d1 and white king at e1. Black queenside is the only castle move available. Half move number is 8. Full move number is 16. White to move.