1rb4r/pp1k1pb1/8/2npp2P/P1pNPPp1/2P2RP1/3P2B1/RNB1K3 w Q - 2 20
FEN state: 1rb4r/pp1k1pb1/8/2npp2P/P1pNPPp1/2P2RP1/3P2B1/RNB1K3 w Q - 2 20 ; Best move: f3f1
The current state of the chess board is: Black rook at b8, black bishop at c8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at d7, black pawn at f7 and black bishop at g7. Black knight at c5, black pawn at d5, black pawn at e5 and white pawn at h5. White pawn at a4, black pawn at c4, white knight at d4, white pawn at e4, white pawn at f4 and black pawn at g4. White pawn at c3, white rook at f3 and white pawn at g3. White pawn at d2 and white bishop at g2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 2. Full move number is 20. White to move.