These are Blanker Hans socks by Monika Eckert. This is the third pair of socks that I have knit that she has designed. They are often mirrored on the front, with a different pattern on the back. A bit challenging, but I like that.
I used Top Cat in Peony from Wandering Cat Yarns
I knit on two size 2.5 mm circular needles.
I love how the back pattern is different from the front, a checkerboard and stripes. Also the fronts are mirrored, which keeps me on my toes. (Pun intended!)