Well, you can always try to solve some easier puzzle, which requires less grinding, at least for now: https://mempool.space/tx/aba3c2ae442aa20150996ee68f9aa4da83b57a4312891078be0c2e68c50b2801

For example, this address: https://mempool.space/address/bc1qzsjnew5qcn75e4cqdsc6r9v8fjy5ensancqmv2l2n82p0q5f5tlsfu3slz

You need to check only 256 transaction hashes on average, to solve it.

Proof of being spendable in testnet4: https://mempool.space/testnet4/address/tb1qzsjnew5qcn75e4cqdsc6r9v8fjy5ensancqmv2l2n82p0q5f5tls758l9d

Of course, rewards from my puzzle are smaller, because I am not that wealthy. But they are also easier to get, at least at the beginning, when nobody is trying to do that yet.