Brain Out 2 Level 233

Overview

A sad girl stands at a desk with an envelope, a postbox visible outside the window. The solved frame shows the desk drawer opened with a stamped envelope inside, and the girl happy, and the message "A letter must be stamped to be successfully mailed".

• Difficulty: Easy
• Estimated moves: 1–2

Step-by-Step Solution

1. Look at the envelope. The envelope on the desk has no stamp, so it cannot be mailed yet.

1. Find the stamp. The stamp is not on the desk; open the desk drawer.

1. Stamp the letter. Take the stamp from the drawer and apply it to the envelope.

1. It is ready to mail. The stamped envelope can now be posted. The "A letter must be stamped to be successfully mailed" result appears.

Strategy & Reasoning

A letter needs a stamp to be mailed. The stamp is hidden in the desk drawer. Opening the drawer and stamping the letter lets it be mailed.

The postbox outside the window looks like the destination, but you cannot just mail an unstamped envelope. The stamp is not lying on the desk; it is stored inside the desk drawer. Opening that drawer reveals the stamp, and applying it to the envelope satisfies postal requirements. The result message spells out that postage is mandatory.

Why stamp the letter first? The postbox is visible outside the window, but an envelope with no stamp cannot actually be mailed. The stamp is not lying on the desk; it is stored inside the desk drawer. Opening the drawer reveals the stamp, and applying it to the envelope satisfies the postal requirement. Only then can the letter be sent to the pen pal. Trying to mail the bare envelope directly fails, because postage is mandatory — which is exactly what the result message spells out.

The postbox outside the window is the destination, but an envelope with no stamp cannot actually be mailed. The stamp is not lying on the desk, so the first thing to do is open the desk drawer. Inside is the stamp, which you then apply to the envelope. Only once the envelope is stamped does it become a valid piece of mail that can be sent to the pen pal. Trying to mail the bare envelope directly fails, because postage is mandatory, which is exactly what the closing message spells out.

Open the desk drawer for the stamp and apply it to the envelope before it can be mailed.

Stamping the envelope lets it be posted to the pen pal.

The stamp was not on the desk but hidden in the drawer, which is why the first instinct to mail the bare envelope directly is always rejected.

Tips & Common Mistakes

• Step 1: Open the desk drawer to find the stamp.
• Step 2: Apply the stamp to the envelope.
• Mistake: Do not try to mail the bare unstamped envelope.
• Result: Once stamped, the letter can be mailed.

Key Frames