Summary
Keep your brain sharp in just 30 seconds. Start on the left with the number given and follow the instructions as you go across. Within the 30-second time limit, beginners have to complete their challenge, intermediates have to complete their own challenge AND beginners' challenge, and advanced players have to complete their own AND the intermediate. You can try to improve on your times each day.
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30-Second Challenge [Edition 2]
30-SE...
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