r1q1kb1r/p1p1p2p/np3pb1/3p2p1/P2P4/RPK1nP1P/2P1P1PB/1N1Q1BNR b kq - 4 16
FEN state: r1q1kb1r/p1p1p2p/np3pb1/3p2p1/P2P4/RPK1nP1P/2P1P1PB/1N1Q1BNR b kq - 4 16 ; Best move: e3d1
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at f6 and black bishop at g6. Black pawn at d5 and black pawn at g5. White pawn at a4 and white pawn at d4. White rook at a3, white pawn at b3, white king at c3, black knight at e3, white pawn at f3 and white pawn at h3. White pawn at c2, white pawn at e2, white pawn at g2 and white bishop at h2. White knight at b1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 16. Black to move.