It is a game that reasoning the digital numbers 0-9 hidden in the cover.
[How To Play]
Number of 0-9 is hidden one by one.
Open one cover, input by reasoning numbers.
It is also possible to open the cover of nine randomly immediately after the start.
Determined by the "SUBMIT" button After entering all the numbers.
-- High score enough cover to open less.
-- The 10-point deduction in the case of an incorrect answer.
-- Full cover 10 points bonus.