First, I divide the 12 coins equally and weigh them. I will again divide to equal numbers whichever half is heavier and weigh them. Now, I'll isolate the 3 remaining coins that are heavier. I'll label them 1, 2, and 3. I'll choose two coins to weigh. If I weigh 1 and 2, and one is heavier, then that'll be the fake coin. If 1 and 2 are equal in weight and are balanced, then the 3rd coin is the fake coin.
It was a fun puzzle game. Thanks @nafion.
Nice answer!
Your post was opened in my laptop for a while. I was constructing my solution and simultaneously typing about it. I didn't realized too many people answered already. Hahaha.
Hahaha, ready to tackle the harder version?
https://steemit.com/puzzle/@nafion/puzzle-can-you-figure-out-which-steem-coin-is-fake-part-2-hard
Oooh. That's intense. Gonna check it out, now. Sorry for being late.