Place the digits 1-9 once each in each row, column, and irregular region.
Digits in white circles must appear in the four cells surrounding it (if a digit appears twice in a white circle, it must appear at least twice in four surrounding cells).
Solution code: Row 3
on 24. April 2023, 11:01 by Rollo
Sehr schön! 4* für mich. Meine Lösung Nr. 4500 :-). Die ID DEG ist lustig, aber wohl Zufall, oder ;-)?
on 11. April 2023, 20:15 by mathpesto
Lovely interactions! And just the right amount of challenging :)
on 31. March 2023, 21:43 by slowbiex
loved it, even if it took me longer than anticipated. Thanks,