23 d - American beer cut short? Sure, txt you numbers in boxes. I suppose it must be "sudoku", but what bothers me is the "american beer" bit - surely that must be Bud (Budweiser), making "budoku". Is budoku a variation of sudoku? - or how do you get "sud"?
If it had of been BUD then the clue would probably have read ' American beer - no head' ,or some such indicator that it was the last, rather than the first letter, that needed removing.