R' U' F L2 U D2 R2 F' L2 F R2 B2 U2 L B D F R' B U F U R' U' F
R U' F' U2 D2 B' R' F R2 B L2 F2 D2 R2 B D2 F D2 F' U2
R U' // EO F' U2 D2 B' R' // DR 7+5 4c2e F R2 F (U2 F D2 F' D2 F') // HTR (U2 R2 B2 U2) // leave slice in 20 sk: R U' F' U2 D2 B' R' F R2 [F U2 B2 R2 U2 F] D2 F D2 F' U2 [ ] = B L2 F2 D2 R2 B // solve slice (+0) DR is 20 optimal and it's my 4b5 PB. Only reasonable 19 on a scramble is: R2 D2 R' U' // EO (F2 R2 B D2 L2 F2 R') // DR 11+2 (F L2 R2 B') // HTR (D2 F2 U2 F2) // finish The scramble is full of good stuff and with nobody finding this I can't be mad about not getting the 19 here.
R' U' F U L' F' U' R2 U R U' F' U2 F2 D2 R2 U2 B2 U2 B' R' D R' U' F
F B' U B U R2 L2 D R' L' B2 L2 U' B2 U D L2 F2 L2 F2
F B' U B // EO U R2 L2 D L' R' // DR 10+1 4c4e B2 L2 [D' // HTR R2 D2] L2 F2 L2 F2 // leave slice in 19 [ ] = U' B2 U D //solve slice (+1) First EO I checked and a crazy variation hell 10+1. Took me fairly long to check everything but it just looked so good that I wanted to be 100% sure I'm not missing anything obvious and prioritised it over looking at 5-movers and stuff. 20 is optimal for EO, with nothing on a scramble giving reasonable sub20s.
R' U' F R' F2 D' R2 B2 F2 R2 F D L2 U' R B2 R' U2 B2 R' U' F
D F2 D L2 F2 B L2 D2 B2 U' F B L2 F B' L2 U2 D L' B2 L2 U'
(U L2 B2 L) // EO D F2 D L2 B // DR 9+2 4c2e ([D R2 B' F R2 F' B' U) //HTR (F2 U2] L2 F2) // leave slice in 21 [ ] = D' U2 L2 F' B L2 F' B' U B2 D2 // solve slice (+1) Having 28 EOs in 4 and a big pressure with 20,20 start I decided to only check 4 movers and it almost backfired badly, as I was late into the solve with nothing promising written down. (Obviously there was good stuff on the EOs I checked, but I just kept missing stuff.) This 9+2 was more or less the only good thing I had and I am very self aware about how bad my 4q on 4a2 is, so I was very nervous. Thankfully 2q just worked and I wrote down the 22 with my hands shaking so badly that I made a ~30s pause to make sure I don't get DNFed for bad handwriting. Scramble has 20s and 21s to offer but they are tricky in my opinion and just getting the 22 that is optimal for this DR and for all DRs that i wrote down is good enough for me.
R' U' F R' D R2 F2 U' F2 D2 B2 L F2 L2 U L2 B2 F L' U' B2 R' U' F
R2 F' R F' R' D2 R L U2 B R2 L2 B' D2 F B2 D' L2 F' D'
(D F L2 D) // EO R2 F' R F' L // DR 9+1 4c2e ([B L2 B U2 D2 F']) // HTR (U2 R' L' D2 R L) // leave slice in 19 [ ] = B2 F' D2 B L2 R2 B' // solve slice (+1) 20 is optimal for this EO and getting a 19 on the scramble requires a 5 move extension of (F L' F) EO. Nobody else getting 20 on this one surprised me, but there was once again a lot of stuff to check on the scramble. Nice result to boost that ao5, but was too tired to keep up the pace into R2A2 & R2A3.
R' U' F D' F2 U' D2 L2 F' U' B' U' R L' B2 D2 L2 U' R2 U' R2 D R' U' F
D2 R2 U2 D2 F2 R2 D2 F' L2 U2 F' B2 U2 R' B L' B2 R2 L2 D2 B D L U F2
(F2 U' L' D') // EO (B' D2 L2 R2 B2 L B' R) // DR 12+2 4c4e (U2 [B' L2 D2 B) // HTR (U2 L2 B2] D2 U2 R2 D2) // leave slice [ ] = B2 F U2 L2 F D2 R2 F2 // solve slice (+1)
R' U' F D' R2 L B D' R' U D' L2 B' R2 B2 U2 L B2 U2 R B2 F' R' U' F
D' F R L B R2 L2 D2 B L2 U2 B L2 B R2 B2 R2 B2 U' F2 D F' L2 F2
D' F R L // EO (F2 L2 F D' F2 U') // DR 10+4 2c8e B R2 L2 D2 B L2 U2 B L2 B // HTR R2 B2 R2 B2 // finish DR is 22 optimal