1r2kb1r/pq2ppp1/b1pp4/nN1P3n/1P4RP/4B2N/P1P1PP2/2RQKB2 b k - 6 15
FEN state: 1r2kb1r/pq2ppp1/b1pp4/nN1P3n/1P4RP/4B2N/P1P1PP2/2RQKB2 b k - 6 15 ; Best move: h5f6
The current state of the chess board is: Black rook at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black queen at b7, black pawn at e7, black pawn at f7 and black pawn at g7. Black bishop at a6, black pawn at c6 and black pawn at d6. Black knight at a5, white knight at b5, white pawn at d5 and black knight at h5. White pawn at b4, white rook at g4 and white pawn at h4. White bishop at e3 and white knight at h3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at c1, white queen at d1, white king at e1 and white bishop at f1. Black kingside is the only castle move available. Half move number is 6. Full move number is 15. Black to move.