4qrkb/p2b3p/np2p1pn/1Nr2p2/3p1Q2/2BP1BP1/PPP2P1P/R3K1NR w Q - 0 23
FEN state: 4qrkb/p2b3p/np2p1pn/1Nr2p2/3p1Q2/2BP1BP1/PPP2P1P/R3K1NR w Q - 0 23 ; Best move: b5d6
The current state of the chess board is: Black queen at e8, black rook at f8, black king at g8 and black bishop at h8. Black pawn at a7, black bishop at d7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at e6, black pawn at g6 and black knight at h6. White knight at b5, black rook at c5 and black pawn at f5. Black pawn at d4 and white queen at f4. White bishop at c3, white pawn at d3, white bishop at f3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white king at e1, white knight at g1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 23. White to move.