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Use the numbers in the puzzle to reach the target 750 amazing puzzles getting harder and harder Gain 1 abacus for each puzzle Tired of gaining abacuses one by one? Then play rocket mode :) Play time mode and show that you are the fastest in the world Gain abacuses and take your place among the smartest players in the world Grow as you gain abacuses Baby -> Child -> Player -> Expert -> Genius -> Einstein PLAY 2x3x4 and KEEP YOUR BRAIN FIT Protect yourself from Alzheimer's if you are aged Show how you are smart if you are middle-aged Make your brain sharper if you are young Anyone from the age of 7 to 70 can play 2x3x4 What are you waiting for?