SHADING: Cells containing values exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded. All the shaded cells are given.
ANTI-KNIGHT: Cells a knight's move apart cannot contain the same digit.
ALGEBRA: Each letter, along with "THE", represents a different digit.
MAGIC SQUARE: The central cells of each box form a classic 3 by 3 magic square, containing the digits 1 to 9, each row, column and diagonal summing to 15.
Otherwise standard Sudoku rules apply.
Solution code: Row 1
on 21. August 2024, 04:24 by Shuhua Milk
Nice!
on 27. December 2023, 00:23 by Virux
WOW. i found this one to be very hard. But damn, once it started flowing it went by fast. Amazing. I think i'll have to solve it once more to fully understand what I did :)
on 11. November 2023, 03:25 by Abbott Abbott
It's always fun to see how your variant combines with new rules. I hope your other puzzles enjoy the dedication from this lovely puzzle
---I'm glad you enjoyed it, thanks for the comment.---ATK
on 9. November 2023, 19:42 by vitaminz
Great puzzle! I had a lot of fun solving it.
If anyone out there is stuck at a point or would like to watch a solve of this puzzle, I've posted one here: https://youtu.be/NvNBhJiB__w
Fair warning: I've been told by the highest authority that my path was not the intended one at at least one point :)
---I think your video contains some excellent moments of concise explanation. Thanks for the solve and covering my puzzle, good luck with your channel.---ATK
on 9. November 2023, 12:15 by ozgaz
Thanks atk - as always a pleasure to solve. The magic square was a nice idea.
---Thanks, I thought that the magic square would make it stupid easy, but no, somehow the puzzle hangs on. I have a couple more with exactly the same ruleset hanging around. See you next time. ---ATK
on 7. November 2023, 22:22 by frankpujo
Lovely puzzle as always!
---Thanks for the solve and the generous comment.---ATK