My first puzzle with the Doppelgänger constraint by Kafkapharnaum. According to testers (thanks everyone), it should be around 3* for difficulty. Enjoy!
A 4x4 grid with the same rules. The highlighted cells show how the digit missing in the row (3), column (1) and box (4) are different. Play the example.
Lösungscode: The row missing the 1, left to right (6 digits)
am 15. August 2026, 07:17 Uhr von EvanB
Good puzle
am 14. Dezember 2025, 02:55 Uhr von darkgently
Most interesting and fun 6x6 sudoku I've ever done!
am 4. Dezember 2025, 18:36 Uhr von Gnubeutel
Loved this. Keep up the good work, gdc.
am 2. Dezember 2025, 17:01 Uhr von ChinStrap
Really enjoyed this one. Clear and approachable while staying interesting throughout
am 2. Dezember 2025, 16:41 Uhr von Playmaker6174
A very fun and interesting puzzle that played around the missing digit theme throughout the solve, the way it resolved at the end was pretty neat there :)
am 2. Dezember 2025, 15:46 Uhr von The Book Wyrm
Fun lil puzzle. Smooth puzzle and a lot of fun.