1rbqkbnr/ppppp3/n6p/5p2/1P1B1p2/3P3N/P1PKP1PP/RN1Q1B1R w k - 0 10
FEN state: 1rbqkbnr/ppppp3/n6p/5p2/1P1B1p2/3P3N/P1PKP1PP/RN1Q1B1R w k - 0 10 ; Best move: d4h8
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at e7. Black knight at a6 and black pawn at h6. Black pawn at f5. White pawn at b4, white bishop at d4 and black pawn at f4. White pawn at d3 and white knight at h3. White pawn at a2, white pawn at c2, white king at d2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 10. White to move.