Rubinstein Open: Missed Opportunities in the Penultimate Round

Chess Tournaments

Round four was characterized by unforgiving fighting chess—or lucky escapes. You decide for yourself.
Here are the games:

The current standings and pairings for next round can be found here:

The top three players, overall and rated under 1800, win $50, $30, and $20 respectively. 

As usual, the Friday after the final round a 2h blitz arena will serve as a tie breaker.