rn2kb1r/3qn2p/bp6/1Qp1PPpP/pP2PP2/N2B1N2/P2P4/1RB1K2R b K - 0 20
FEN state: rn2kb1r/3qn2p/bp6/1Qp1PPpP/pP2PP2/N2B1N2/P2P4/1RB1K2R b K - 0 20 ; Best move: b8c6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black queen at d7, black knight at e7 and black pawn at h7. Black bishop at a6 and black pawn at b6. White queen at b5, black pawn at c5, white pawn at e5, white pawn at f5, black pawn at g5 and white pawn at h5. Black pawn at a4, white pawn at b4, white pawn at e4 and white pawn at f4. White knight at a3, white bishop at d3 and white knight at f3. White pawn at a2 and white pawn at d2. White rook at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.