rn1k3r/1b1pb2p/pp2P2n/1Np4P/4P1P1/1P1B2R1/PBPP4/RQ2K3 w Q - 0 23
FEN state: rn1k3r/1b1pb2p/pp2P2n/1Np4P/4P1P1/1P1B2R1/PBPP4/RQ2K3 w Q - 0 23 ; Best move: b2h8
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8 and black rook at h8. Black bishop at b7, black pawn at d7, black bishop at e7 and black pawn at h7. Black pawn at a6, black pawn at b6, white pawn at e6 and black knight at h6. White knight at b5, black pawn at c5 and white pawn at h5. White pawn at e4 and white pawn at g4. White pawn at b3, white bishop at d3 and white rook at g3. White pawn at a2, white bishop at b2, white pawn at c2 and white pawn at d2. White rook at a1, white queen at b1 and white king at e1. White queenside is the only castle move available. Half move number is 0. Full move number is 23. White to move.