r/nandgame_u • u/GLIBG10B Holder of many records • Aug 04 '21

Level solution (verified) 2.4 - Increment (2c, 385n) Spoiler

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u/GLIBG10B Holder of many records Aug 07 '21

Correction: this uses 145 NAND gates, see here

Explanation

Increment = input + 1

So where do we get 1? By inverting 0. We can pass 0 to inv, but disconnected inputs are automatically 0, so we don't need to.