Bitcoin Puzzle Box
In 2019 there was a Kickstarter project launched to design a Bitcoin puzzle box for playing cards. It's not really a Bitcoin puzzle, but an artistic rendition of something resembling one.
The Bitcoin playing card puzzle box was presented by the author himself (Andrei Jikh) on Reddit and elsewhere. Again, this isn't really a Bitcoin puzzle in the cryptographic sense
Links to access bitcoin puzzles
Classic Bitcointalk Thread on Bitcoin Puzzles
Crack This Crypto Puzzle to Win 2.1 BTC
/r/bitcoinpuzzles - Bitcoin Puzzles on Reddit
Designing Proof of Transaction Puzzles for Cryptocurrencies
BitCrack Tool to Brute Force Private Keys
Sample Bitcoin Puzzle TX
A well known Bitcoin Puzzle TX
There’s $70,000 worth of Bitcoin hidden inside this image
310 Bitcoin Challenge Solutions [Bitcoin Puzzle]
Introducing the 310 BTC Bitcoin Challenge
Bitcoin 310 Challenge [Bitcoin Puzzle]
Armchair Detectives Have Another Bitcoin Puzzle to Solve
Over $1 million in bitcoin was hidden in a picture – and there’s still some left to be found.
Bitcoin Puzzle's $1.9M Prize Purportedly Won in a Week
Alternative Cryptocurrency Mining Puzzles
Bitcoin Puzzle Games Are Growing in Popularity
https://crypto.bi/bitcoin-puzzle/More findings related here.