r1b1k2r/3q2b1/pp1pp2p/1Qp2pp1/5PPP/1NP4B/PPN5/R1B2KnR w k - 0 23
FEN state: r1b1k2r/3q2b1/pp1pp2p/1Qp2pp1/5PPP/1NP4B/PPN5/R1B2KnR w k - 0 23 ; Best move: b5d7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black queen at d7 and black bishop at g7. Black pawn at a6, black pawn at b6, black pawn at d6, black pawn at e6 and black pawn at h6. White queen at b5, black pawn at c5, black pawn at f5 and black pawn at g5. White pawn at f4, white pawn at g4 and white pawn at h4. White knight at b3, white pawn at c3 and white bishop at h3. White pawn at a2, white pawn at b2 and white knight at c2. White rook at a1, white bishop at c1, white king at f1, black knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 23. White to move.