Leap Frog of War by Four
(Published on 20. May 2026, 23:52 by Jrosas)
Normal Sudoku rules.
Fog of war: fog covers the grid. Correctly placing a digit removes fog from the surrounding cells. No guessing is required.
Leap frog rule: frogs cover the grid. Adjacent digits across frogs leap in value and differ by exactly 4. All possible frogs are given.
FIREFOX USERS:
https://sudokupad.app/sko5fihf1n
An “F” is a frog.
Thank you StevenS for the comment.
VIDEO:
Before posting a comment about having to guess, please consider viewing my solution video:
https://youtu.be/ts7B1DCCrW8?si=5ad6HJ6rnXfWgE9f
PUZZLE LINK:
Solution code: Row 8 left to right
Comments
today, 09:27 by Flinty
Cute ending, brutal in a few places.
on 23. May 2026, 06:48 by TheJRMY
Very fun puzzle. I was going to rate 2*, but then that last step took me quite a while.
on 22. May 2026, 16:23 by firespire
The one with pictures works fine in my Firefox "Disable Emoji Replacement: Off" is the selected setting in my Sudokupad.
on 21. May 2026, 21:38 by Myfyr MJ
Very nice but difficult. That negative constraint is brutal! ????
Took me 79 minutes.
on 21. May 2026, 21:31 by TheJRMY
Very fun puzzle. I was going to rate 2*, but then that last step took me quite a while.
on 21. May 2026, 18:58 by Jrosas
Added Firefox version
on 21. May 2026, 17:36 by Martina
Truly great fun, thank you. Rating 3* ok for me because of that one cliff.
on 21. May 2026, 16:02 by CitrusGremlin
Lovely puzzle. The final disambiguation was incredibly clever.
on 21. May 2026, 07:20 by Justalilguy
Pretty nice, although the difficulty hike was bit sudden after a lot of easy steps
on 21. May 2026, 03:13 by MonsieurTRISTE
Frogtastic!
on 21. May 2026, 01:46 by StevenS
Something's wrong with Firefox: I don't see any frogs, although they show properly in Chrome.
Reply: I read that Safari emojis do not translate to Firefox. Here is a version with an F in place of every frog.
https://sudokupad.app/sko5fihf1n
