[porkynator]

I am still doing DR-only practice, but I will go back to "normal" solves soon.

1.
Scramble: R' U' F L2 R2 B F2 R2 U2 F2 L2 D L' B2 L' D' R' F' D2 B' L' F2 R' U' F
Solution: U2 L' F' D L2 U2 F2 B2 D L' D B2 D2 B2 D B2 D' L2 B2 D2 B2 D2 B2 D' B2 F2 L2 (27)

Spoiler (Click to View)

U2 L' F' //EO (3/3)
D L2 U' @ R' //CO (4/7)
@ = U' S2 U //DR (4-1/10)

Rewrite:
U2 L' F' D L2 U2 F2 B2 D L' //DR (10/10)
(L2 F2 D' L2 B2 D2 B2 D') //3c2e2e (8/18)

Skeleton:
U2 L' F' D L2 U2 F2 B2 D L' D B2 D2 B2 [c] L2 D F2 L2

[c] = D B2 D' L2 [e] D B2 D' L2 //Reduce to 2e2e (8-4/22)
[e] = B2 D2 B2 D2 B2 D2 (6-1/27)

I thoght my 2e2e insertion at the end was not optimal, but I was short on time. Turns out it was

Other stuff:

1.
U2 L' F' //EO (3/3)
D L2 U' R' //CO (4/7)
(R2 U2 R2 D' F2) //Blocks (5/12)
(L2 D L2 D L2 U) //2e2e (6/18)

I couldn't find good insertions for this, IF gives 24 inserting a 2e2e (6-2) and then a 3e (8-6)

2.
U2 L' F' D L2 U2 F2 B2 D L //DR, almost the same as before (10/10)
(L2 F2 D2 B2 U B2 U') //2e2e3e (7/17)

I tried this after the time limit, with no success. Also IF has troubles with this one, it gets 28.

3.
With the previous skeleton, one can get a 2e2e3e with one less move (but no DR):
U2 L' F' D L2 U2 [-] F2 B2 D L
(L2 F2 D2 B2 U B2 U')

[-] = U2 F2 B2 D2 F2 B2 (6-7/16)

And IF gets another 28.

2.
Scramble: R' U' F R2 U2 L2 D L2 U' R2 D2 L' D2 R' D' R U' B' L' R F' D2 F' R' U' F
Solution: F B2 R' U2 L B2 L2 R U2 R' U' R2 L2 D R U' R2 L' B F D2 B' F L' F L U (27)

Spoiler (Click to View)

F (U' L' F) //EO (4/4)
B2 R' U2 L B2 L2 R [2] D //DR (8/12)
L [1] U2 L F2 //3e7e4x (4-1/15)

[1] = L R' F2 [3] L' R U2 //7e4x (6-5/16)
[2] = E2 //2e4e4x (2-1/17)
[3] = [S, R2] //2e2e4x (6-2/21)

Rewrite:
F B2 R' U2 L B2 L2 R U2 [4] D' R2 L' B F U2 B F' L' B L D

[4] = [R' U': M2]

So much effort for a 27...

3.
Scramble: R' U' F R2 B2 L2 D2 B2 F' U2 F R F' L U R' B' L2 D' R' B F2 R' U' F
Solution: D F2 D' F2 D F2 D' L2 D2 L2 D' L2 U' B2 U2 R2 F' U F2 L2 R2 D' F' L' D B U' L' (28)

Spoiler (Click to View)

(L U B' D' L) //EO (5/5)
(F) //Simplify 4-2 (1/6)
(D R2 L2 F2 U' F) //DR (6/12)
(R2 U2 B2) //321 + pairs (3/15)
(U L2 D L2 D2 L2) //Almost done (6/21)
(D F2 D' F2 D F2 D') //Done (7/28)

27, 27, 28 = 27.3

1. mit und ohne Limit:

U2 L' F' //EO
R D L2 U L F2 L //DR
D L2 F2 R2 U' R2 * U2 //2E2E

* = R2 U D B2 D' U' R2 U2

Solution: U2 L' F' R D L2 U L F2 L D L2 F2 R2 D B2 D' U' R2

19 moves.

Incredible solve Sébastien! I have completely missed the single R move semplification after EO, it lead to such a nice DR!