Which Cup Will Fill First? The Puzzle Explained

Visual puzzles like this one often look simple at first glance, but they’re designed to test how carefully you observe details. In this puzzle, coffee is being poured into a series of connected pipes leading to seven cups, labeled 1 through 7. The challenge: figure out which cup will fill first.

Step-by-Step Reasoning

  1. Start from the source: The coffee is poured into the top pipe, which then branches out into multiple smaller paths.
  2. Check for blockages: Many of the connecting pipes are blocked, preventing coffee from flowing through them.
    • The path leading to cup 1 is blocked at the entrance.
    • The path leading to cup 2 is also blocked.
    • The path toward cup 3 is blocked before reaching the cup.
    • The path toward cup 5 is blocked too.
    • The path toward cup 6 is also closed.
  3. Look for the open path: When tracing the flow carefully, you’ll see that the only open route for the liquid is the one leading directly to cup 4.

The Correct Answer

👉 Cup 4 will fill first.

Why This Puzzle Is Tricky

The puzzle is designed to mislead you into thinking multiple cups might fill at the same time. However, by observing carefully, you notice that most pipes are intentionally blocked off, leaving only one true path open. It’s a clever way to remind us that details matter—and that things aren’t always as straightforward as they seem.

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