🧩 Level Information

• Level Number: 72
• Problem Statement: Think three-dimensionally, also consider the blocks on the left and input 10
• Difficulty: Moderate to Slightly Difficult

🎯 Objective

Count all the 3D blocks lined up on the screen, including the blocks on the hidden left side, enter the total number "10" to get it correct.

📝 Steps to Solve

1. First, count the blocks visible on the screen. Check the number of blocks visible from the top, front, and right side.
2. Realize that the number visible is clearly not 10. Here, pay attention to the phrase "think three-dimensionally" written in the problem statement.
3. Imagine the blocks as a "3D building block," and consider that the same number of blocks that are visible on the right side are hidden on the left side.
4. From the arrangement of blocks visible on the front or top, mentally complement that 'blocks are extending similarly on the left side,' and add the invisible blocks to the count.
5. The design is such that the sum of the visible block count plus the number you think are hidden on the left should equal "10," so judge the total to be 10.
6. Tap the number input field (or keypad) at the bottom of the screen, press "1" and then "0" in order to enter "10."
7. After entering, if there is an "OK" button or a confirmation button, tap it to finalize the answer. This clears the stage.

💡 Hints

• The instruction "think three-dimensionally" in the problem statement is the biggest hint. Counting only the numbers seen directly in front will always be wrong.
• The screen only shows 'a part of the three-dimensional side.' Imagine that blocks are continuing on the invisible left side.
• Using the rows or columns of blocks visible on the right side as a clue, assuming 'there is symmetry on the left side as well' makes it easier to guess the number.
• If you end up with 9 or 11 or another odd number when counting, consider that there are 1-2 missing blocks in the unseen area.
• The final answer to enter is the number '10.'

🧠 Analysis & Points

This level is a three-dimensional recognition puzzle that utilizes the habit of counting only the 'visible numbers' as if reading a flat plan. The problem statement already indicates the approach with 'think three-dimensionally, also consider the blocks on the left and input 10,' but many players still reflexively count only the visible blocks and get the wrong answer. The key is to perceive the blocks as 3D objects and deduce from the appearance on the right or top side that 'the same arrangement should be stacked on the back side.' By mentally completing the visually missing elements (blocks on the left), and adding that to the total, you can finally arrive at the correct answer of 10. The screen does not perfectly depict a three-dimensional structure, so it is more like an intuition puzzle that expands the imagination rather than a precise geometric problem.

🔍 Common Mistakes

• Only counting the visible blocks and entering a number like 5-7.
• Skimming over the phrase 'also consider the blocks on the left' in the problem statement, and trying to solve it with the same approach as a usual counting puzzle.
• Only imagining the 'back side' or 'depth direction' instead of the left side, leading to answering with a different number.
• Not arriving exactly at 10, leading to repeatedly trying random numbers (8, 9, 11, etc.).
• Trying to swipe the screen to rotate the blocks or dragging to move them (you need to think with the fixed display in this stage).

🎉 Advice After Clearing

Once you get used to looking at things three-dimensionally, you will have an advantage in future puzzles of the 'imagine the unseen parts' type. Proceed to the next level and continue to challenge problems that require a change of perspective.

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