Qn2kb2/5pnr/bpppp3/3P1P1p/2P2BpR/N7/PP2P1P1/R3KBN1 w Q - 3 15
FEN state: Qn2kb2/5pnr/bpppp3/3P1P1p/2P2BpR/N7/PP2P1P1/R3KBN1 w Q - 3 15 ; Best move: a8b8
The current state of the chess board is: White queen at a8, black knight at b8, black king at e8 and black bishop at f8. Black pawn at f7, black knight at g7 and black rook at h7. Black bishop at a6, black pawn at b6, black pawn at c6, black pawn at d6 and black pawn at e6. White pawn at d5, white pawn at f5 and black pawn at h5. White pawn at c4, white bishop at f4, black pawn at g4 and white rook at h4. White knight at a3. White pawn at a2, white pawn at b2, white pawn at e2 and white pawn at g2. White rook at a1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 3. Full move number is 15. White to move.