My first Killer Sudoku puzzle, inspired by watching Cracking the Cryptic videos. It may help you to know Mark and Simon's "secret".
Normal sudoku rules apply: insert the digits 1 to 9 in each row, column and box without any digit repeating. Digits in killer cages sum to the total given. Digits may not repeat in a cage. The grey shaded cell contains an even number.
Solve online: SudokoPad
Solution code: The 9 digits in row 4.
yesterday, 09:06 by abw
Changed solution code to 9 digits, based on feedback received.
yesterday, 08:46 by abadx
Great introduction to variant sudoku. Apart from the secret, a bit of dominoes and parity makes solving experience great. Only drawback: the loooong solution code. 18 digits were used in the past, but now nobody uses it (and it will low your ratings)
yesterday, 07:25 by etoler
Lovely debut! The early stages are super straightforward, but then things break open a bit and the deductions require a little more cleverness. Can't wait to see your next one!
yesterday, 06:43 by fallean
Code is toooooo long :O
yesterday, 03:40 by gamlesvarten
Great debut! Just a tip, a 9 digit solution code is enough :)
on 8. October 2025, 23:49 by Ragna
Fun puzzle! Thank you. :-)
on 8. October 2025, 21:26 by Myfyr MJ
Very nice puzzle, chasing itself round the grid! More of a 1* difficulty in my opinion.
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