r1b1k1n1/1p1p1pp1/2p1p2r/7p/pbPnP1P1/q1N4P/1P2BPK1/R1B1Q1NR b q - 3 16
FEN state: r1b1k1n1/1p1p1pp1/2p1p2r/7p/pbPnP1P1/q1N4P/1P2BPK1/R1B1Q1NR b q - 3 16 ; Best move: a3a1
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black knight at g8. Black pawn at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at c6, black pawn at e6 and black rook at h6. Black pawn at h5. Black pawn at a4, black bishop at b4, white pawn at c4, black knight at d4, white pawn at e4 and white pawn at g4. Black queen at a3, white knight at c3 and white pawn at h3. White pawn at b2, white bishop at e2, white pawn at f2 and white king at g2. White rook at a1, white bishop at c1, white queen at e1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 16. Black to move.