rn1qkb2/p3ppQr/2pp2p1/1pnP3p/1P2P3/2P4b/P2K2PP/RN3BNR b q - 3 18
FEN state: rn1qkb2/p3ppQr/2pp2p1/1pnP3p/1P2P3/2P4b/P2K2PP/RN3BNR b q - 3 18 ; Best move: c5e4
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 bishop at f8. Black pawn at a7, black pawn at e7, black pawn at f7, white queen at g7 and black rook at h7. Black pawn at c6, black pawn at d6 and black pawn at g6. Black pawn at b5, black knight at c5, white pawn at d5 and black pawn at h5. White pawn at b4 and white pawn at e4. White pawn at c3 and black bishop at h3. White pawn at a2, white king at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 18. Black to move.