chessu.cash
Solve chess puzzles to get free ecash
(Built in the pre-conference e-cash hackday)
Discussion
I did one and It said 410 sats reward, I solve it correctly, it only gave a 10 sat reward, but when I tried to get it, it said token already claimed.
The 'puzzle pot' is just the total amount available currently. It doesn't say that there is a 410 sats reward
"Congratulations! You earned 10 sats!"
But thanks for the feedback! Maybe there is a race condition somewhere. I see that there were quite a few solved within minutes of my post - and the reposts:
chessu-1 | 2025-10-04T12:45:55.119145860Z [PUZZLE SOLVED] Puzzle: 001wr | Amount: 10 sats
chessu-1 | 2025-10-04T12:46:33.210367674Z [PUZZLE SOLVED] Puzzle: 00Gt0 | Amount: 10 sats
chessu-1 | 2025-10-04T12:47:21.973853902Z [PUZZLE SOLVED] Puzzle: 004mT | Amount: 10 sats
chessu-1 | 2025-10-04T12:47:59.254236167Z [PUZZLE SOLVED] Puzzle: 006GK | Amount: 10 sats
chessu-1 | 2025-10-04T12:49:07.052747174Z [PUZZLE SOLVED] Puzzle: 00EbJ | Amount: 10 sats
chessu-1 | 2025-10-04T12:49:39.066441517Z [PUZZLE SOLVED] Puzzle: 009eX | Amount: 10 sats
Is it possible that a bot is claiming it because no matter how many I solve, the tokens are always claimed already
I've noticed problems with copy-and-paste.
Are you using the QR code to get the token, or copy-pasting the text?
(both should work, I'm just curious)
I copied the text twice, buy I'll try one with QR!
The qr code just gives me "invalid data"
Interesting. Works fine for me 😀
The QR code should just be a 'cashuB...' token
Which QR code reader are you using? The QR code is NOT a lightning payment, it's just a cashu token
Is the QR reader refusing to read anything? Or is it "successfully" reading the QR code as "invalid data"?
It succesfully reads and says invalid data. I use Enuts, maybe it is outdated. Any recommendations on what to use instead?
I just use https://cashu.me
If I remember correctly, eNuts is a bit older yes. Maybe it supports only v1 tokens (cashuA....), but this chess faucets generates v2 tokens (cashuB...)
However, I think some people are trying to revive eNuts
Thanks again for checking. I'll do a little research on eNuts now
This is cool! I keep getting a “slow down” error and never seem to get any sats for a solve though.
Each IP address can only solve every 30 seconds, so maybe you're too smart and fast 😀.
Thanks for the feedback and interest!
I wish! Happens even after waiting 30 seconds so not sure what weird config I have!
Oh yes. I see it now too! Sometimes, it works, but sometimes the clock just seems to go back to 30 seconds again
Claude Code wrote the code, and is now telling me that it found a bug and fix. Shouldn't take too long, I think
nostr:npub1ekcqvy33wcnegde7kz42cshg4e4rd0yryzw737clq387w296mn8s3932yy
I think it's fixed now
(While fixing it, I also broke another thing with the wallet, but I think the balance is restored now)
nostr:npub1ekcqvy33wcnegde7kz42cshg4e4rd0yryzw737clq387w296mn8s3932yy
Yeah, looking good now! Won a few sats and dropped them back in!