r3kb2/1b5Q/2n3pn/2qpP3/pP4Pp/P1N1P3/R1P2P1P/2B1K2R w K - 0 21
FEN state: r3kb2/1b5Q/2n3pn/2qpP3/pP4Pp/P1N1P3/R1P2P1P/2B1K2R w K - 0 21 ; Best move: b4c5
The current state of the chess board is: Black rook at a8, black king at e8 and black bishop at f8. Black bishop at b7 and white queen at h7. Black knight at c6, black pawn at g6 and black knight at h6. Black queen at c5, black pawn at d5 and white pawn at e5. Black pawn at a4, white pawn at b4, white pawn at g4 and black pawn at h4. White pawn at a3, white knight at c3 and white pawn at e3. White rook at a2, white pawn at c2, white pawn at f2 and white pawn at h2. 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 21. White to move.