After having discussing with some cubers at the WC, I understood
that my multislotting file wasn't clear enough, so I propose a new
exercise here : The F2L Fewest move challenge:D

How proceed : Just scramble your cube as usual an try to build
your F2L with the Fridrich method (Cross + 4 Pairs). The only rule is
that the first step of your method who matches one of fridrich one's
must be the cross ( No extended cross allowed).

You can : Solve the cross while solving ONE piece from a F2L pair
Solve the cross while preparing ONE F2L pair

The idea is to work on pair during the transition times, that was
the goal of multislotting.

I offer here a few example of what it could be.

Scramble 1 : L' R' F2 U2 L2 B2 U' B' F D2 L2 F' U' B' L' U2 D2 L2 D L
B' R D B F2

Solve :

L' F D R' D : Solve DF, DL and DR edges + adjust D layer for the
DB edge
U : Prepare FL pair
L' D' : Solve cross ( 8 moves )
L' U' L : Solve FL pair ( 11 moves )
R U' R' U2 : Prepare FR pair considering BL pair
R U2 R2 U R : Solve FR pair and prepare BL pair ( 20 moves )
U2 L U L' : Solve BL pair and prepare BR pair ( 24 moves )
U2 B U B' : Solve F2L ( 28 moves )

5 moves/pair

Scramble 2: D L2 D2 L2 B L2 U' L' U' L2 R2 B2 L D2 L' R2 F2 U R2 L' U2
L' B2 U' F

Solve :

L' D L' B' : Solve DB, DR and DL edges
U' : Prepare BL pair
B' D2 : Solve cross ( 7 moves )
U B' U' B : Solve BL pair ( 11 moves )
U' L' B U B' L : Solve BR pair ( 16 moves )
D F' U2 F D' : Solve FR pair and break FL pair ( 21 moves )
L' U L U L' U' L: Solve F2L ( 28 moves )

5.25 moves/pair

Scramble 3 : D' L' F2 B L' F2 L' B2 R2 F D' F2 D2 L2 B' R U L' D B2 U
D' L2 U' L'

Solve:

F' B D2 L' : Solve DL, DF and DR edges
U' : Prepare FR pair
L' D' : Solve cross ( 7 moves )
U' R U R' : Solve FR Pair ( 11 moves )
L U R' U2 L' U R: Solve BL pair considering BR pair ( 18 moves )
D2 U2 F U2 F' D2: Solve FL pair and prepare BR pair ( 24 moves )
U B U B' : Solve F2L ( 28 moves )

5.25 moves/pair

Does someone has any other idea for those scrambles or for new ones?

Thats is what I've called multislotting a few years ago, but I saw
that my multislotting file on this forum wasn't clear enough. Thanks
to dennis Nilsson, we now have a clear website explaining the basic
ideas
www.cubeloop.com/php/cube/expert.php?chapter=f2l&subchapter=multislot

Let's multislot guys!!!