r1bqkr2/1ppp4/p1n4p/2b1pppP/3Pn3/PNP1BN1R/1P2PPP1/1QR1KB2 b q - 2 16
FEN state: r1bqkr2/1ppp4/p1n4p/2b1pppP/3Pn3/PNP1BN1R/1P2PPP1/1QR1KB2 b q - 2 16 ; Best move: c5a7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at f8. Black pawn at b7, black pawn at c7 and black pawn at d7. Black pawn at a6, black knight at c6 and black pawn at h6. Black bishop at c5, black pawn at e5, black pawn at f5, black pawn at g5 and white pawn at h5. White pawn at d4 and black knight at e4. White pawn at a3, white knight at b3, white pawn at c3, white bishop at e3, white knight at f3 and white rook at h3. White pawn at b2, white pawn at e2, white pawn at f2 and white pawn at g2. White queen at b1, white rook at c1, white king at e1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 2. Full move number is 16. Black to move.