1rb1kb1r/p1p1np2/1p2q2p/2Ppp1p1/1n2PPP1/N1N4P/PP1P4/1RB1KBR1 b k - 2 15
FEN state: 1rb1kb1r/p1p1np2/1p2q2p/2Ppp1p1/1n2PPP1/N1N4P/PP1P4/1RB1KBR1 b k - 2 15 ; Best move: e5f4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black knight at e7 and black pawn at f7. Black pawn at b6, black queen at e6 and black pawn at h6. White pawn at c5, black pawn at d5, black pawn at e5 and black pawn at g5. Black knight at b4, white pawn at e4, white pawn at f4 and white pawn at g4. White knight at a3, white knight at c3 and white pawn at h3. White pawn at a2, white pawn at b2 and white pawn at d2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 2. Full move number is 15. Black to move.