rn2k1n1/pb4br/q2pp2p/5Pp1/4p3/1P1P4/PB1Q2PP/RN2KBNR w q - 2 18
FEN state: rn2k1n1/pb4br/q2pp2p/5Pp1/4p3/1P1P4/PB1Q2PP/RN2KBNR w q - 2 18 ; Best move: b2g7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black knight at g8. Black pawn at a7, black bishop at b7, black bishop at g7 and black rook at h7. Black queen at a6, black pawn at d6, black pawn at e6 and black pawn at h6. White pawn at f5 and black pawn at g5. Black pawn at e4. White pawn at b3 and white pawn at d3. White pawn at a2, white bishop at b2, white queen at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 18. White to move.