DietersMistakesIn2022/solution35

Moves 118 to 118  

In this case, the proverb holds: extending at is best.

Moves 118 to 118  

The point is that Black can take a lot of profit here while the group on the right side is actually not as weak (as I thought)

Moves 118 to 118  

In the game I played this way which was far inferior although a is still available and Black still has the upper hand.