rn3br1/p1p1np2/2kqb1pp/Pp1pp3/R1N2B1P/2PPRP2/1PQKP1P1/5BN1 b - - 4 16
FEN state: rn3br1/p1p1np2/2kqb1pp/Pp1pp3/R1N2B1P/2PPRP2/1PQKP1P1/5BN1 b - - 4 16 ; Best move: d5c4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at c7, black knight at e7 and black pawn at f7. Black king at c6, black queen at d6, black bishop at e6, black pawn at g6 and black pawn at h6. White pawn at a5, black pawn at b5, black pawn at d5 and black pawn at e5. White rook at a4, white knight at c4, white bishop at f4 and white pawn at h4. White pawn at c3, white pawn at d3, white rook at e3 and white pawn at f3. White pawn at b2, white queen at c2, white king at d2, white pawn at e2 and white pawn at g2. 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.