In Puzzle 9, you need to exchange keeping AE. The pool is very light on vowels, and you are going to need to draw a blank to win the game. Keeping AE allows you potential scoring and bingo options, but the consonant heavy pool and bingo lines that requires vowels dictate that keeping both vowels is a necessity. Although it’s tempting to try to prevent bingos and outscore your opponent, at this score your opponent won’t need a bingo to win. Keeping AE maximizes your bingo and scoring chances on future turns.