Determined Romans (fog of war, XV, determinants)
(Published on 24. February 2023, 22:23 by alhobj)
The Romans are determined to expand north and west from Rome. Hidden in the fog of war are the Germanic tribes and the Celts.
Normal sudoku rules apply.
Fog of war: More of the grid will reveal itself when correct digits are entered. It is ok to enter digits in the fog.
XV: Digits on each side of a V has to sum to 5 and digits on each side of a X has to sum to 10. All Vs and Xs are given.
Determinants: Dots give the determinant of the 2x2 matrix surrounding that dot. Dots are colour coded:
- Roman red = -79
- Roman bronze = 3
- Germanic black = 0
- Celtic blue = 54
- Celtic green = -39
CTC Link: https://www.tinyurl.com/mtfpmtxm
Solution code: Row 1 and row 3. 18 digits no spaces
Comments
on 17. October 2024, 04:04 by DiMono
Did not use the negative constraint. Still a 1 star difficulty.
on 29. June 2024, 02:02 by ostio456
A new set rule set for me! being partially colourblind i almost skipped this, but with the help of my sister to decipher between the blue and green it proved to be a great puzzle. Thank you!
on 10. January 2024, 00:33 by ave
Scary ruleset, but I'm glad I've tried it. Really not that hard after the 2nd determinant.
Thanks for the puzzle, alhobj! :)
on 17. August 2023, 09:31 by DonQuichopp
Awesome! Like so many others at the beginning I thought, nah, that's a pass for me. But then I re-read the rules, thought I'd give it a go and enjoyed it very much /-))
Thanks!
on 20. July 2023, 10:24 by vorash00
brilliant
on 8. July 2023, 03:44 by lapazhu
great idea for a variant, would love to see more determinant based puzzles
on 27. June 2023, 23:29 by Aeneryss
Very nice sudoku :) I got a bit scared by the rules but it was actually quite easy to use them while solving
I had a bit of a pause on a brown dot - it looks very yellow on my screen so I got a bit confused, but I assumed that it was brown and it worked!
on 6. March 2023, 00:28 by patolucatis
I think the puzzle's broken for me, nothing appears at all when I open it, not even the fog of war.
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Weird. I just tried it on mac, pc and my phone with three different browsers and it worked for all of them.
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Okay, it was an issue with my browser. Changed it and it's solved, hats off for making such a fun fog of war sudoku!
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Great that you fixed it and tried my puzzle again! Thank you for the kind words!
on 27. February 2023, 23:11 by ImMitchell
Super cool solve. Linear algebra shows up when you least expect it!
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Thank you! As a math teacher I am happy to hear that!
on 26. February 2023, 01:02 by Ragna
I love FOW!
Thank you for this wonderful puzzle! That was fun!
The ruleset is unusual. But once you understand the rules, whitch is not soo heavy, it flows trough the hole puzzle. :-))
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Me too! And for a newbie puzzle-setter like me I think it is easier to make a puzzle when only parts of the puzzle are visible.
Thank you so much for your kind comment, it makes me want to try and make more puzzles!
on 25. February 2023, 21:52 by sacklunch
Straightforward and fun! I agree with ThibautV that the negative constraint isn't needed, but it was a unique and enjoyable ruleset. Thanks for sharing!
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Thank you! You are correct, see my answer to ThibautV :)
on 25. February 2023, 19:12 by ThibautV
Very nice puzzle!
(I didn't use the negative constraint for the V and X, maybe I took an illegal shortcut?)
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Thank you! I used the negative contraint a few times per puzzle version while builing this. I missed that it was not needed for the final version until I saw wenchangs solve. But this is only the second puzzle I have made and I am not very good at solving yet ;)
on 25. February 2023, 15:50 by LoverOfPi
Wow, a masterclass of puzzle!
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Thank you! If you are a lover of Pi maybe you will enjoy my puzzle Pi e Prime Phi Py https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000CPO where you place digits of Pi?
on 25. February 2023, 15:16 by kommandoking
Really nice puzzle, thanks!
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Thank you for your kind comment!
on 25. February 2023, 13:25 by heliosfant
Same here, first I thought I will not bother with such complex rules, but then tried it anyways and it was super nice and fun.
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Thank you!
on 25. February 2023, 11:45 by Lorff
Really liked this constraint (to my own surprise). Thank you for this nice puzzle!
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Thank you!
on 25. February 2023, 08:00 by DarrenBurnett
When I read the rule set I was about to skip it. However, I took the plunge and gave it a go. Far smoother than I had expected. Thanks for putting this together.
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Thank you for the kind feedback!
on 25. February 2023, 05:57 by wenchang
NICE and Smooth! Spoiler alert!
https://youtu.be/vSDIYeMuDQQ
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Thank you! It was very fun to watch you solve my puzzle. I am having my friend who has lived in China watch your video and translate some of it for me :)
on 24. February 2023, 23:02 by WithIceCream
Fun puzzle; I was pleasantly surprised by how smooth the determinant logic was. Thanks!
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Thank you! So was I!
