r1b2bnr/1B1pk2p/1pn2p2/p1p3P1/4p2P/1PN1P3/PBPPN3/R2Q1K2 b - - 4 15
FEN state: r1b2bnr/1B1pk2p/1pn2p2/p1p3P1/4p2P/1PN1P3/PBPPN3/R2Q1K2 b - - 4 15 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. White bishop at b7, black pawn at d7, black king at e7 and black pawn at h7. Black pawn at b6, black knight at c6 and black pawn at f6. Black pawn at a5, black pawn at c5 and white pawn at g5. Black pawn at e4 and white pawn at h4. White pawn at b3, white knight at c3 and white pawn at e3. White pawn at a2, white bishop at b2, white pawn at c2, white pawn at d2 and white knight at e2. White rook at a1, white queen at d1 and white king at f1. Both players have exhausted their castles. Half move number is 4. Full move number is 15. Black to move.