Number Chain
number · every day
Land exactly on the target in exactly the number of moves given. Getting there is the floor, and the score rewards the more elegant route.
You start on one number and have to finish on another, using a small palette of arithmetic buttons and no more moves than you are given. Arriving is the easy part. The stars go to the route that used the fewest different operations, the smallest numbers, and never wandered away from the target to get there.
When you will see it
Number Chain is one of the three puzzles that appear every day, so it is on the page whenever you are.
The rules, in one line
Land exactly on the target in exactly the number of moves given. Getting there is the floor, and the score rewards the more elegant route.
This is the same sentence the app shows above the board, so nothing here is a paraphrase of the real rule.