Use your spare time to move your brainUse your spare time to move your brain

By sliding the screen to select the number and match in the grid, the interval together to complete an equation, very interesting, you can follow the plan, you can pour down, you can from left to right, you can also from right to left, if you think 3x3 Relatively simple, you can challenge about 4x4 or 5x5, each have three difficulty, the higher the difficulty, may need more digital symbol combination, how to decide by you, the answer is not unique, as long as the calculation results can be the same, the use of leisure Debris time to move the brain it