r1b1kbn1/p2p1q1r/nN4pp/BPp1p3/5pP1/3P1K1P/1PP1PP2/R3QBNR w q - 0 15
FEN state: r1b1kbn1/p2p1q1r/nN4pp/BPp1p3/5pP1/3P1K1P/1PP1PP2/R3QBNR w q - 0 15 ; Best move: b6c8
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at d7, black queen at f7 and black rook at h7. Black knight at a6, white knight at b6, black pawn at g6 and black pawn at h6. White bishop at a5, white pawn at b5, black pawn at c5 and black pawn at e5. Black pawn at f4 and white pawn at g4. White pawn at d3, white king at f3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at a1, white queen at e1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 15. White to move.