TDF Odd Mountain Stage
(Published on 5. July 2025, 11:10 by palpot)
The 2025 Tour de France sets off today (Saturday), and this puzzle is my tribute to the grand départ.
Grab your helmet, settle into the saddle, and enjoy the ride!
Special thanks to Flinty for test-solving and helping refine the puzzle’s aesthetics. And a big shoutout to Phil the Hat - his line tool made those curvy lines possible.
Solve online: SudokuPad
Rules:
Normal sudoku rules apply. Place the digits 1 to 9 in each Row, Column, and 3X3 box.
Stage Rules:
Each line in the grid represents the path of a different rider. Riders earn 1 point for every odd digit on their path.
Digit in a cell with a rider indicates the amount of points earned by that rider. The Red rider (R4C5) doesn't share a cell with its line.
Stage Results:
The Yellow rider scored more than the Green rider, who scored more than the Red rider, who scored more than the Teal rider.
Dutch Whisper: Two cells connected by a Yellow line must have a difference of at least 4.
German Whisper: Two cells connected by a Green line must have a difference of at least 5.
Parity Line: Adjacent digits along the Red line have a different odd/even parity.
Modular Line: Any set of three sequential cells along a dashed teal modular line contains one digit from (1,4,7), (2,5,8), and (3,6,9).
Solution code: Row 1 digits from left to right.
Comments
on 11. July 2025, 12:26 by LNOMISL
I love this puzzle ! Such a fun ruleset. Had a hard time due to a wrong pencilmark but had fun all the way
47min for me
on 9. July 2025, 22:08 by QuiltyAsCharged
Very nice puzzle! The riders showed correctly for me on android Firefox, fwiw
on 9. July 2025, 18:34 by sujoyku
Lovely puzzle! Thank you, palpot!
on 9. July 2025, 01:28 by Kawkaz
Very fun solve, thank you palpot
on 8. July 2025, 01:31 by Exigus
Very cool idea. Thanks!
on 7. July 2025, 11:34 by AutoNick
Lovely, very fun to solve. :)
on 6. July 2025, 17:23 by dkfan9
Great ride! I really liked how the rider values were used along with the variety of constraints. Only problem for me was the riders themselves don't show on sudokupad--at least in android Firefox. No biggie, I lettered the spots until solving them.
