[CrossOnLeft] 2017-06-14 - Berlin Summer Cube Days 2017 - reconstruction by Brest
U2 B D2 B U2 B' F2 U2 F' U' R2 U R D L2 D2 B' L U L2
y x // inspection
L' U l U l2' d r // cross
x x R U R2' U' x' R U' R' U // 1st pair
x' x' R U' R2 U R' U' R U // 2nd pair
x' U' U R2' U' R2 U x2' U' R' u // 3rd pair
x' f' F R' U l' R' B' R D' D z' R' U R // 4th pair / EOLS
U R' U R R' U' R x' y' R U2' R' U' R U' R' L' U U L U L' U L R2 // ZBLL
