The rarest achievement in chess.com!?


bullet 3500 is a stackable achievement, not unlockable... i solved 10,000 puzzles for the achievement, which certainly takes more time & effort than the others; not sure what you mean by 'script'. 🤔

So, I was just adopting my guy @ShadowCellen(not my alt, and sry). And in one of the game he just freak out and just give up lol, so I ended up checkmating him with long castle, and got this achievement.
The legit first ever time I have done this achievement. There is another achievement which is to checkmate with a king move(discover check with king and mate).
I believe over 80% of chess.com don't have this achievement xD
i got the king checkmate

what abt the the achievement for winning with only 0.1 seconds left?
everyone who plays bullet pr blitz gets this