Dokebi Sudoku

Each vertical line and each horizontal line can contain only one number from 1 to 9.
Each block can contain only one number from 1 to 9.
Puzzles must be solved within a set time.
You can use the hammer to fill in the numbers in the blank spaces.
Using notes will help you solve the puzzle.
Coins are recharged once every 30 minutes, and you can also recharge them by watching advertisements.
You need coins to play the game, and even when you run out of hearts or hammers, you can use coins to add more.