As others know, this is the most difficult of 9 x 9 patterns seen on Tues difficult 9 x 9.
The reason I started counting them was because in 2019, I believe this pattern appeared 5 times.
It appeared on the worse possible day for me in July 2019.
In 2020, the pattern appeared 4 times.
Fuzzy, and Paul, it took me far longer than 30 mins to do, probably closer to 90 mins which is long for the Tues 9 x 9.
But at least I got it.