rn1qk1r1/1bppp3/p4b2/1p3ppp/PP2P1N1/3P1P2/R2QK1PP/1NB2B1R b q - 4 18
FEN state: rn1qk1r1/1bppp3/p4b2/1p3ppp/PP2P1N1/3P1P2/R2QK1PP/1NB2B1R b q - 4 18 ; Best move: h5g4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black rook at g8. Black bishop at b7, black pawn at c7, black pawn at d7 and black pawn at e7. Black pawn at a6 and black bishop at f6. Black pawn at b5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at a4, white pawn at b4, white pawn at e4 and white knight at g4. White pawn at d3 and white pawn at f3. White rook at a2, white queen at d2, white king at e2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 18. Black to move.