if u will c Tabs, i made little mistake. i shoud touch only corner. so as u c, if i took last red flag such perfect like u did, and then did not make unneeded move after i used corner to go down - it would be about 16.20-16.30.
it's hard to (only touch corner) but it's possible, i did it in my 17.30 game (pity i was slow at the other parts of the map)