Solution code: The contents of the top right 4x4 set of cells in row-major order (starting from r1c6 and ending with r4c9), followed by the contents of row 9.
on 7. September 2024, 07:53 by Nagesh
The requirement of solution code is quite stupid. You might have as well asked for all 81 digits to be entered twice once starting from r1c1 and once from r9c9
on 4. September 2024, 13:34 by kporadzinski
It's defenitely not **-stars puzzle. For me it was stront three stars. The solution code could be also less complicated. Bud it's a very nice puzzle.
on 3. September 2024, 22:36 by Partario
Very nice setting!
But there's really no need for a 25-digit solution code. Almost more likely to err when filling it in...
on 3. September 2024, 21:15 by abadx
25 digits solution code…not even worth trying
on 3. September 2024, 20:09 by cybers
Pure class, as I've come to expect! Particularly adored box 4 and the use of the knight's move throughout the puzzle, especially during the final resolution. (Only note: a 25-digit solution code? We're verging on the sadistic...)
on 3. September 2024, 08:34 by Fizz
A very nice and fun puzzle!
on 3. September 2024, 07:18 by Fisherman
Silence is golden, so is this puzzle.