4096 Number puzzle game

Details

The goal is to get a single square to be 4096.
Get two of the same number next to each other to add them together.

2+2=4　
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4+4=8
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8+8=16
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16+16=32
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32+32=64
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64+64=128
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128+128=256
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256+256=612
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612+612=1024
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1024+1024=2048
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2048+2048=4096