Brain Find Level 29

Overview

Level 29, subtitled "Which glass has lemon in it?", looks like a memory or guessing game but is actually a lateral-thinking puzzle about how an object is hidden. On screen there are two identical glasses standing side by side, both drawn upside down and filled with light-blue water. The question at the top simply asks you to pick the one glass that contains a lemon. Below the glasses sits a yellow circular replay button, and near the bottom of the screen a single lemon is shown inside a small circle as the item you ultimately need to reveal. The core mechanic is that the glasses are inverted, so you cannot see what is inside them from the outside; guessing by appearance is a trap, and the intended solution is to physically overturn the glasses so their contents are poured out and the lemon becomes visible.

• Difficulty: Easy
• Estimated moves: 2

Step-by-Step Solution

1. Survey the scene before touching anything. At the top, read the question "Which glass has lemon in it?". In the middle of the screen, note that the two glasses are drawn upside down — their open rims face downward and their flat bases face upward — and both are filled with the same amount of blue water. There is no visible difference between them at all.

1. Do not waste time tapping or swapping the two glasses hoping to guess the right one. From the outside, both cups are perfectly identical: same size, same water level, same position. The game deliberately gives you no visual clue to choose between them, so a pure guess has no logical basis and will not be accepted.

1. Realize that because the glasses are upside down, the only way to see what is inside is to overturn them. Lift or flip one glass over so it turns right-side up; when it tips, the blue water pours out and whatever was hidden inside falls out onto the screen. Repeat this for the second glass as well, since you cannot know in advance which cup conceals the fruit.

1. Once a glass is overturned and its contents are emptied, the hidden lemon drops into view. The game immediately recognizes that you have found the lemon and presents the success state: a large ribbon reading "Good," the word "Genius!" underneath, and a single lemon displayed inside a big yellow circle in the center of the screen. At this point the level is complete.

1. If overturning the first glass only pours out plain water, do not be discouraged — that is expected. The point of the puzzle is that you must empty the glasses rather than guess; the lemon will appear from whichever cup actually held it, and the "Good / Genius!" screen confirms you have found it.

Strategy & Reasoning

The design of this level relies on the visual fact that the glasses are drawn inverted. A player who treats the scene as a "guess which cup" game will tap the left glass, then the right glass, trying to deduce the answer from hints that simply do not exist. This is the first trap: the two cups are symmetric on purpose, so no amount of staring at them reveals which one contains the lemon. Brain Find puzzles almost never ask you to make an uninformed guess, which is the first hint that the intended action is not choosing but revealing.

The second key observation is the orientation of the glasses. Because each cup is upside down with its rim facing the floor, anything inside it — water and, in one case, a lemon — is being held in place only while the cup remains inverted. The moment the cup is flipped over, gravity takes over and the contents spill out. This turns the puzzle from an information problem ("which glass?") into a physical problem ("empty them and look"). It matches the series' habit of asking you to act on the scene rather than over-analyze it.

Alternative approaches fail for concrete reasons. Tapping a single glass without overturning it leaves the lemon sealed inside, so nothing changes. Swapping the two glasses around only rearranges identical cups and reveals nothing about their contents. Trying to use the small lemon icon at the bottom as a draggable object also does not help, because that icon is merely a display of the goal, not a tool. The only gesture that changes the state of the scene is overturning the cups, which is why the success screen appears only after the contents have been poured out. The puzzle is therefore solved by action, not by deduction: empty the glasses, let the lemon fall out, and the game confirms the answer.

Tips & Common Mistakes

• Common mistake: tapping or swapping the two identical glasses to "guess" the right one. The cups are deliberately indistinguishable, so guessing never works. The correct approach is to overturn the glasses and pour them out instead of choosing between them.
• Common mistake: assuming you only need to touch one glass. Because you cannot tell which cup holds the lemon before emptying it, be prepared to overturn both; the lemon appears from whichever one actually contained it.
• Common mistake: treating the small lemon icon at the bottom as something to drag into a glass. That icon is only a picture of the target. Do not drag it — instead, flip the inverted cups so the hidden lemon falls out on its own.

Note: solution steps are based on visible frames only