r1b2b1r/1p1pn3/4pkpp/p1B3n1/P2q1p1P/1P1P1PP1/1RPNP2R/3QKBN1 b - - 4 16
FEN state: r1b2b1r/1p1pn3/4pkpp/p1B3n1/P2q1p1P/1P1P1PP1/1RPNP2R/3QKBN1 b - - 4 16 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at d7 and black knight at e7. Black pawn at e6, black king at f6, black pawn at g6 and black pawn at h6. Black pawn at a5, white bishop at c5 and black knight at g5. White pawn at a4, black queen at d4, black pawn at f4 and white pawn at h4. White pawn at b3, white pawn at d3, white pawn at f3 and white pawn at g3. White rook at b2, white pawn at c2, white knight at d2, white pawn at e2 and white rook at h2. White queen at d1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 16. Black to move.