Definition of run length encoding

SOLVED: How are the encodings the same or different from run-length encodings?Why wouldn't a game using just run-length encodings be challenging?Why do you think fax machines use RLE?

Eldrew Yulo celebrates junior world championships run with brother Carlos Eldrew Yulo hugs older brother Carlos after a successful run in the Junior World Artistic Gymnastics Championships, where he won bronzes in floor exercise and horizontal bar. The younger Yulo, 17, also shares a sweet moment with his partner. | via Delfin Dioquino/Rappler | Rappler

Eldrew Yulo beams with pride after junior world championships WATCH: Eldrew Yulo looks forward to a well-deserved break after wrapping up his run in the Junior World Artistic Gymnastics Championships with two bronze medals. Yulo also shares the lessons he learned from his campaign. | via Delfin Dioquino/Rappler | Rappler