This is a challenging puzzle game in which the player creates a mathematical equation that achieves a target value using four given numbers and four arithmetic operations. Players must use their logical thinking and creativity to reach a different target value each time.

■ Rules
* Use all numbers: All four numbers provided must be used one at a time.
* Four arithmetic operations and parentheses: Add, subtract, multiply, divide, and use parentheses as many times as you like.
* Target value achievement: Try to make the formula match the target value, which changes each time.

■ Operation
* Tap a panel: Tap the bottom panel to add it to the end of the formula.
* Drag a panel: Drag a panel to add it anywhere in the formula.
* Drag & Drop: Added panels can be dragged and dropped to any desired location.
* Delete panel: Added panels can be deleted by double tapping on them.

■ Game Modes
* Basic Mode: The target value and the four numbers to be used are determined at random.
* Custom Mode: You decide the target value and the four numbers to be used.

■ Features
* Intuitive operation: Simple and easy-to-use controls allow anyone to enjoy the game immediately.
* Different challenges each time: The target value changes each time, so there is always a fresh challenge awaiting you.
* Promotes logical thinking: Solving puzzles develops your logical thinking and problem-solving skills.

Test your computational and logical thinking skills and hone your skills while having fun. Let's give it a try!