1n2kbnr/r1p1p1pp/p1b5/1B1p1p2/3P1q1P/4PN2/PPPB1KPR/RN1Q4 w k - 0 10
FEN state: 1n2kbnr/r1p1p1pp/p1b5/1B1p1p2/3P1q1P/4PN2/PPPB1KPR/RN1Q4 w k - 0 10 ; Best move: b5c6
The current state of the chess board is: Black knight at b8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black rook at a7, black pawn at c7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at a6 and black bishop at c6. White bishop at b5, black pawn at d5 and black pawn at f5. White pawn at d4, black queen at f4 and white pawn at h4. White pawn at e3 and white knight at f3. White pawn at a2, white pawn at b2, white pawn at c2, white bishop at d2, white king at f2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1 and white queen at d1. Black kingside is the only castle move available. Half move number is 0. Full move number is 10. White to move.