rn2kbr1/p1pppppp/8/8/q1bNP2P/1P1p2PR/P2N4/R1B1K3 b q - 0 16
FEN state: rn2kbr1/p1pppppp/8/8/q1bNP2P/1P1p2PR/P2N4/R1B1K3 b q - 0 16 ; Best move: a4a5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black queen at a4, black bishop at c4, white knight at d4, white pawn at e4 and white pawn at h4. White pawn at b3, black pawn at d3, white pawn at g3 and white rook at h3. White pawn at a2 and white knight at d2. White rook at a1, white bishop at c1 and white king at e1. Black queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.