1rbqk1n1/6br/pp1pp2p/4Npp1/1P1N2P1/P2P1P2/2PBP1BP/R2QK2R b Q - 1 18
FEN state: 1rbqk1n1/6br/pp1pp2p/4Npp1/1P1N2P1/P2P1P2/2PBP1BP/R2QK2R b Q - 1 18 ; Best move: g7e5
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black bishop at g7 and black rook at h7. Black pawn at a6, black pawn at b6, black pawn at d6, black pawn at e6 and black pawn at h6. White knight at e5, black pawn at f5 and black pawn at g5. White pawn at b4, white knight at d4 and white pawn at g4. White pawn at a3, white pawn at d3 and white pawn at f3. White pawn at c2, white bishop at d2, white pawn at e2, white bishop at g2 and white pawn at h2. White rook at a1, white queen at d1, white king at e1 and white rook at h1. White queenside is the only castle move available. Half move number is 1. Full move number is 18. Black to move.