r2q1b1r/pppkp1p1/2n4n/1B1p1p2/6Pp/BPN1PN2/P1PP1P1P/1R1QKbR1 b - - 5 12
FEN state: r2q1b1r/pppkp1p1/2n4n/1B1p1p2/6Pp/BPN1PN2/P1PP1P1P/1R1QKbR1 b - - 5 12 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black king at d7, black pawn at e7 and black pawn at g7. Black knight at c6 and black knight at h6. White bishop at b5, black pawn at d5 and black pawn at f5. White pawn at g4 and black pawn at h4. White bishop at a3, white pawn at b3, white knight at c3, white pawn at e3 and white knight at f3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at b1, white queen at d1, white king at e1, black bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 5. Full move number is 12. Black to move.