🧩 Level Information

• Level Number: 217
• Objective: Open the shelf and washing machine
• Difficulty: Normal

🎯 Objective

Open the door of the shelf and the door of the washing machine (laundry machine) on the screen at the same time.

📝 Steps to Solve

1. Tap the shelf door several times to confirm the reaction, and verify that opening just the shelf or just the washing machine does not clear the level.
2. Once you realize that doing one at a time doesn't work, prepare two fingers on the screen.
3. Swipe open the shelf door (at the handle part) with the first finger, but do not lift the finger from the screen and maintain it in the held position.
4. With the other finger, swipe open the washing machine door (at the handle part).
5. Once both the shelf and washing machine doors are open simultaneously, the level will be cleared. You can release your fingers after confirming both are open.

💡 Hints

• Simply opening the shelf, or just the washing machine, will not clear this level. Consider how you can create a state where both are open simultaneously.
• Unlike usual puzzles, this is a type of problem where 'simultaneous operation' is necessary. Recall the multi-touch feature on your smartphone or tablet.
• Use two fingers to open each door at the same time. The trick is to hold one door while opening the other.

🧠 Analysis and Key Points

This level tests whether you can notice 'simultaneous operation' and 'multi-touch (two-finger operation)'. Players may initially think that opening either the shelf or washing machine is sufficient and may repeatedly tap or swipe, but that won’t clear the level. Therefore, shifting the perspective to 'Is it necessary to open both at the same time?' is required.\n\nIn Brain Test, problems occasionally appear that assume placing two or more fingers on the screen simultaneously. This level is a typical trick that utilizes the multi-touch feature of the device. By opening the shelf door and holding it while using another finger to open the washing machine door, both doors are simultaneously open, meeting the condition for clearing the level.\n\nThe logic itself is simple, but identifying the implicit rule that 'it won’t clear unless both are open at the same time' and 'it’s okay to operate with two fingers' is key. It challenges players to break free from the reflexive pattern of trying to open only one side at a time, making it a good question.

🔍 Common Mistakes

• Continuously tapping or swiping only on the shelf and failing to realize the requirement is to 'open both at the same time.'
• Trying to open just the washing machine, seeing the door opening animation but getting confused as it doesn’t clear the level.
• After opening one door, releasing the finger and then trying to open the other, failing to meet the simultaneous operation criterion and never clearing it.
• Searching around the shelf or washing machine for keys or tools, seeking other items (no items are needed for this level).
• Assuming that the device can only be operated with one finger, without arriving at the idea of using two or more fingers simultaneously.

🎉 Advice After Clearing

Congratulations on successfully opening the shelf and washing machine at the same time. By this point, you should have become quite accustomed to the 'multi-touch tricks' commonly used in Brain Test. In the future, by keeping the idea of 'holding simultaneously' or 'using two or more fingers to grab' in mind, you should be able to solve similar problems smoothly.

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