Rise and solve — today's is up. Calcudoku, free. Cage arithmetic — +, −, ×, ÷. One unique solution.

No words, no mid-puzzle ads — just numbers and a friendly ghost. 👻

https://gridjoy.app/calcudoku-daily?utm_source=mastodon&utm_medium=social&utm_campaign=daily

#Calcudoku #Puzzle #DailyGame

Did you know? Calcudoku (a.k.a. KenKen) was invented in 2004 by Japanese maths teacher Tetsuya Miyamoto — designed purely as a brain-training puzzle, with no instruction needed. It's one of GridJoy's 18 types.

https://gridjoy.app/calcudoku-info?utm_source=mastodon&utm_medium=social&utm_campaign=content

#KenKen #Calcudoku