2b1k1nr/1p1p4/nrp1ppp1/P1b1q2Q/B2BPP1P/N7/P1PP1KP1/5RNR b k - 4 13
FEN state: 2b1k1nr/1p1p4/nrp1ppp1/P1b1q2Q/B2BPP1P/N7/P1PP1KP1/5RNR b k - 4 13 ; Best move: e5d4
The current state of the chess board is: Black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7 and black pawn at d7. Black knight at a6, black rook at b6, black pawn at c6, black pawn at e6, black pawn at f6 and black pawn at g6. White pawn at a5, black bishop at c5, black queen at e5 and white queen at h5. White bishop at a4, white bishop at d4, white pawn at e4, white pawn at f4 and white pawn at h4. White knight at a3. White pawn at a2, white pawn at c2, white pawn at d2, white king at f2 and white pawn at g2. White rook at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 13. Black to move.