2b1kb1r/1p1ppppn/nq5p/r1p2P2/1QP3P1/N3K3/PP1PP2P/R1B2BNR w k - 1 10
FEN state: 2b1kb1r/1p1ppppn/nq5p/r1p2P2/1QP3P1/N3K3/PP1PP2P/R1B2BNR w k - 1 10 ; Best move: b4b6
The current state of the chess board is: Black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black knight at h7. Black knight at a6, black queen at b6 and black pawn at h6. Black rook at a5, black pawn at c5 and white pawn at f5. White queen at b4, white pawn at c4 and white pawn at g4. White knight at a3 and white king at e3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 10. White to move.