rqb1k3/1p3pbn/p1p1p2r/3p3P/2P3BP/BP2P3/n2P1P2/RN2NK1R b q - 1 20
FEN state: rqb1k3/1p3pbn/p1p1p2r/3p3P/2P3BP/BP2P3/n2P1P2/RN2NK1R b q - 1 20 ; Best move: g7a1
The current state of the chess board is: Black rook at a8, black queen at b8, black bishop at c8 and black king at e8. Black pawn at b7, black pawn at f7, black bishop at g7 and black knight at h7. Black pawn at a6, black pawn at c6, black pawn at e6 and black rook at h6. Black pawn at d5 and white pawn at h5. White pawn at c4, white bishop at g4 and white pawn at h4. White bishop at a3, white pawn at b3 and white pawn at e3. Black knight at a2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white knight at e1, white king at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.