When is All In Not All in?
Level 17
: 5,000/10,000, 10,000 ante
The answer? When it's not all in. Artem Vezhenkov opened in early position and Elvin Sarkarov called, when everyone else had folded, Sarkarov mistakenly thought he'd called Vezhenkov's all in, when in fact it was just a raise, and turned over his cards.
With 
on show and a board reading 
, Vezhenkov had plenty of information to decide what to do and he checked. Sarkarov went all in and Vezhenkov open folded 
.