r3kbn1/pb2pppr/1p5p/1q6/P1pP4/4P1P1/1PP1NP1P/RNB1K2R w KQq - 1 10
FEN state: r3kbn1/pb2pppr/1p5p/1q6/P1pP4/4P1P1/1PP1NP1P/RNB1K2R w KQq - 1 10 ; Best move: a4b5
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black bishop at b7, black pawn at e7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at b6 and black pawn at h6. Black queen at b5. White pawn at a4, black pawn at c4 and white pawn at d4. White pawn at e3 and white pawn at g3. White pawn at b2, white pawn at c2, white knight at e2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 1. Full move number is 10. White to move.