r4bnr/1Qpb2kp/4P3/p7/1q3pPP/P1P5/4NR2/RNB1KB2 b Q - 0 18
FEN state: r4bnr/1Qpb2kp/4P3/p7/1q3pPP/P1P5/4NR2/RNB1KB2 b Q - 0 18 ; Best move: b4b7
The current state of the chess board is: Black rook at a8, black bishop at f8, black knight at g8 and black rook at h8. White queen at b7, black pawn at c7, black bishop at d7, black king at g7 and black pawn at h7. White pawn at e6. Black pawn at a5. Black queen at b4, black pawn at f4, white pawn at g4 and white pawn at h4. White pawn at a3 and white pawn at c3. White knight at e2 and white rook at f2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.