The train should pass through the mountains.
Hint
Answer
Drag the tunnel entrance in front of the train. Then push the red button to move the train.
Level Not Matching? Please Check :
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1Verify Level Number
Make sure your game shows Level 521 - the same as shown above.
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2Check Game Version:
Brain Test has 8 different versions. Please select the correct version above that matches your game.
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3Still Not Matching?
Game updates may shuffle level order. Try browsing all levels by cover image to find your exact puzzle.
Switch Game Version:
Play Brain Test 1
