10 perfect clears in 40 lines, but cheesed (tetr.io)

cheese strats:
1. do two 4-line PCs and force extra O
2. hope for IJLOO 2-line PC (1/7 chance)
3. do TSZ 7th PC
4. PC-PC-DPC
5. PC-PC-DPC with either a triple or tetris finish

Among the DPCs that finish with a tetris, the extra-O OJ/OL setup can almost always be built (if you have extra O at all, that is) and has a high tetris rate (81%), so go for this if you can. Even better if you can get another 2-line PC, of course.

You still have to learn a bunch of 2nd PC setups to pull this off without resetting a million times, so it's not completely cheesed. Here I just got lucky with exactly the same 2nd PC setups on all three loops.

0:00 start
0:03 PC #1 (lines 1-4)
0:09 PC #2 (lines 5-8)
0:19 PC #3 (lines 9-10)
0:22 PC #4 (lines 11-14)
0:32 PC #5 (lines 15-18)
0:39 PC #6 (lines 19-22)
0:48 PC #7 (lines 23-28)
0:55 PC #8 (lines 29-32)
1:06 PC #9 (lines 33-36)
1:17 PC #10 (lines 37-42)

(PS: This isn't even my 10 PC in 40L PB, which is like 1:12.x with freestyle. That was also before I even knew that DPC was a thing, lol.)