4k2r/2p2ppp/2r2n1B/2qpp3/p2Pb1Q1/b5PP/PPPn1P1N/2R1K1R1 b k - 4 18
FEN state: 4k2r/2p2ppp/2r2n1B/2qpp3/p2Pb1Q1/b5PP/PPPn1P1N/2R1K1R1 b k - 4 18 ; Best move: f6g4
The current state of the chess board is: Black king at e8 and black rook at h8. Black pawn at c7, black pawn at f7, black pawn at g7 and black pawn at h7. Black rook at c6, black knight at f6 and white bishop at h6. Black queen at c5, black pawn at d5 and black pawn at e5. Black pawn at a4, white pawn at d4, black bishop at e4 and white queen at g4. Black bishop at a3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, black knight at d2, white pawn at f2 and white knight at h2. White rook at c1, white king at e1 and white rook at g1. Black kingside is the only castle move available. Half move number is 4. Full move number is 18. Black to move.