Brain Test 5 Level 124

Overview

Level 124 is a building-descending puzzle under the prompt "He wants to go down the ground floor." An elderly man stands on the upper landing beside a zigzag staircase that runs down two floors, and an elevator with closed doors sits on the right side of the building. The second state shows the elevator doors open at the ground level and the man standing beside it, which confirms the elevator is the intended way down rather than the stairs. The task is to call or enter the lift and bring him to the ground floor safely.

• Difficulty: Easy
• Estimated moves: 3

Step-by-Step Solution

1. Read "He wants to go down the ground floor." Look at the man on the upper landing and check the two ways down: the zigzag stairs on the left and the elevator on the right.
2. Survey the staircase before using it. The zigzag steps split between floors and may be uneven or unsuitable for the elderly man, so the safer route is the elevator shaft on the right.
3. Call the elevator by pressing its control or touching the closed doors. Wait for the doors to open and the lift car to arrive at the upper landing.
4. Step the man into the elevator once the doors are open, then select or confirm the ground floor so the car descends.
5. Ride the lift down to the ground level. Do not guide him down the staircase while the elevator is available.
6. When the elevator reaches the ground floor and the doors open, let him step out beside the lift car. The completion screen appears once he has safely reached the ground floor.

Strategy & Reasoning

The prompt focuses on getting an elderly person down one level safely, which points away from a winding staircase. The zigzag stairs cross two floors in sharp turns, and an older man on those steps would be an awkward and risky descent. The elevator, already built into the right side of the building, is the purpose-built transport for this job.

The elevator doors in the starting state are closed over a dark shaft, which means the first action is bringing the car to the landing rather than walking straight in. Once the doors open, the descent happens inside the lift, so there is no need to rearrange the staircase steps or build any ramp.

Checking the building layout first confirms that the ground floor exit sits beside the elevator doors. The stairs and the lift both reach the lower level, but the elevator delivers him directly to the door position shown in the finished state, which makes it the accepted route.

Tips & Common Mistakes

• Do not send him down the zigzag stairs; the elevator is the intended safe way to the ground floor.
• Do not try to walk him into the closed elevator doors; call the lift first and wait for the doors to open.
• Do not assume the stairs are broken because they look uneven; the elevator is simply the quicker and safer route the level provides.