Watch “K3 – Plan your climb carefully,” a board game video for K3 from HELVETIQ on BoardGameVideo.
Description provided by HELVETIQ on YouTube:

2021Philippe Proux
Mainly reviews and how-to-play. K3 is covered on BoardGameVideo.com by 4 reviews, 4 how-to-play guides, 3 recorded sessions, and 2 other videos.
About K3, from BoardGameGeek:
Designer
Philippe Proux
Artist
Felix Kindelan
Publisher
Helvetiq
Categories
Mechanics