r1b1k1r1/pp2bn1p/n2pppp1/2p1P3/PqN3P1/2P2N1P/1P1PQP2/R1B1KB1R b q - 0 16
FEN state: r1b1k1r1/pp2bn1p/n2pppp1/2p1P3/PqN3P1/2P2N1P/1P1PQP2/R1B1KB1R b q - 0 16 ; Best move: b4b3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at b7, black bishop at e7, black knight at f7 and black pawn at h7. Black knight at a6, black pawn at d6, black pawn at e6, black pawn at f6 and black pawn at g6. Black pawn at c5 and white pawn at e5. White pawn at a4, black queen at b4, white knight at c4 and white pawn at g4. White pawn at c3, white knight at f3 and white pawn at h3. White pawn at b2, white pawn at d2, white queen at e2 and white pawn at f2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.