pull down to refresh

Solved the first puzzle and it said generating reward but I didn't get anything.
Tried again and solved a puzzle it again said generating reward but also said "slow down you can only solve one puzzle at a time"
reply
Hmm that seems bad. @calle posted it on X, but I don't know who made it.
reply
Oh well. Seems like a fun idea.
reply
Pretty cool. Worked for me
reply
I tried solving this on an android device and I seemed lost
It's like it had 3 shades of colors for the pieces. White, grey and black
reply
Nice one, thanks for sharing
reply