Brain Test 5 Level 24

Overview

A car sits unable to run because its engine needs repair and power. The task is to connect or install the battery and use the tools kept on the shelf to fix the engine, so the car starts working again. The level finishes once the repaired engine runs and the checkmark appears.

• Difficulty: Regular
• Estimated moves: 3

Step-by-Step Solution

1. Inspect the car and its engine to locate what is missing or disconnected. The battery supply has to be put in place before any tool work can energize the engine.
2. Connect or install the battery, seating its contacts so the engine has a power source rather than sitting dead on the chassis.
3. Turn to the tools on the shelf and pick the ones that match the engine repair, such as the spanner or screwdriver needed to tighten or reattach the engine parts.
4. Apply those tools to the engine until the damaged or loose components are fixed and the engine can turn over.
5. Once the repaired engine runs with the battery connected, the checkmark appears and the car is ready to move again.
6. Seat the battery contacts firmly and check that nothing blocks the connection before you reach for the shelf tools; an unpowered engine will not respond to mechanical tightening.
7. After applying the tools, try to turn over the engine; if it stays dead, re-check the battery connection before assuming a part was missed, since the running engine state is what releases the checkmark.
8. After the engine turns over, leave the shelf tools in place once the repair holds; the checkmark confirms the running engine, and there is no further assembly step once the car works again.

Strategy & Reasoning

The level separates the repair into two jobs: supplying power and fixing the mechanical engine. The battery is the electrical side, and the shelf tools are the mechanical side; neither alone finishes the car. Installing a battery into an engine that still has loose or broken parts will not make it run, and tightening parts without a connected battery leaves the engine dead, which is why both stages appear in the solution.
The shelf holds more than one tool, and the useful ones are those that directly service the engine; any prop that does not touch the motor is scenery. The car itself does not start by tapping its body, because the level checks the connected battery and the repaired components underneath. Working power first, then tools, mirrors how a real dead engine would be diagnosed: confirm the supply, then service the mechanics. The finished running state is what releases the checkmark.

Tips & Common Mistakes

• Fit or connect the battery before you expect the engine to respond; an unpowered engine will not turn over.
• Use the shelf tools on the engine parts themselves; do not tap the car body or windows trying to start it.
• Make sure the battery contacts are seated properly; a loose connection reads as a dead engine even after the repair.