Practice mode Big Brain medals:
Get a score higher than the indicated number of grams to get the corresponding medal.


Bronze Medal: 50 grams 
Silver Medal: 150 grams 
Gold Medal: 250 grams 
Platinum Medal: 350 to 400 grams 

Ranks:
Get the indicated number of grams to earn the corresponding rank.

Ace: 2,000 to 2,299 grams 
King: 2,300 grams or more