One Of The Very Best Fog Sudokus

Loved that the fog being revealed barely helped the solver and it was almost entirely logic of the rest of the rules.

41:20 "if forced to i can do sudoku" he says, ignoring the placable 9 in box 7

I have to admit that it was only until a few videos ago that I realized Maverick was an airplane, not a bird or house cat.

Simon: "I'm almost tempted to colour it..." Me "What a relief, thankyou!!"

I can't imagine not enjoying a FoW puzzle, or down rating it as Simon said. Absolutely one of my favorite types of sudoku. If anything, the fog helps follow the logic.

This has to be one of the most wholesome YouTube channels ever. Love it.

Thank you so much for the shoutout Simon! I'm so glad you enjoyed my nail art!

I actually paused and figured it out when he said to and I felt so proud!

@53:30, you haven't ruled out the possibility that the snake goes around r5c9 by using 5 cells in box 6, and then also takes r2c9 & r3c9. It turned out to be a lucky error, and it meant you skipped one extra bit of elegant setting. It took me a little while staring at that before realising that the important bit was that every possible configuration meant 5 digits in box 6, and therefore the 16 cage must be 1249. Now the 1249 quad in r1 means that r1c9 has one of the 5 digits in the largest cage, so the rest of c9 can only have 4 of those digits. And that is what prevents the snake taking r3c9, and forces it to take r4c7. An amazingly good FoW puzzle.

Simon at 41:22: "if forced to, I can do sudoku", removing a 9 pencilmark in r9c2... Also Simon: forgets to place the 9 straightaway in r8c2 for the next 26 minutes 😀

I got 111 minutes. Realizing the break-in after being lost for 30 minutes was very satisfying and the rest of the puzzle felt very nice. Fog of Wars are always my favorite and this one was fantastic!

the 9 in box 7 was literally my second digit of the solve, but I loved seeing Simon solve the puzzle in a very different but entertaining way! Also I somehow misread the 46 cage as a 45 cage and panicked the same way

I never thought these two worlds of mine would collide, but I am so excited for it! Roller Derby is a full contact sport played on quad roller skates. It is played on either a flat track or curved track with a complex set of rules, but the best analogy I have found that works is to describe it as a Rugby Scrum on wheels. I highly recommend looking a few matches up on YouTube to gain a full appreciation for the sport. Greetings from another CTC Roller Derby player.

That was hard! But very rewarding. The way the cage size constraint and the adjacent cages can't share digits constraint interacted produced very original logic.

Thank you so much for the birthday wishes!

I had an epiphany about triangular numbers watching this video. 15 is the triangular number for 5, 5x3, but for 9 it's 45, 9x5. Following the pattern, 7's is 7x4, which is correct. The thing that just clicked as I paused the video and mulled it over is that there are 3 lots of 5 you can make with 1,2,3,4, and 5, {1,4}, {2,3}, and {5}, summing to 15. There are 4 ways to make 7, and 5 ways to make 9. 🤯 I think this will greatly help me with a lot of variant sudokus

1:31:23 - What a beautiful construction. Well done @AstralSky - I loved it.

Hey Simon! I was just wondering if you'd find it interesting to have an eye tracker on during your solves. I thought that it could be annoying for you to see the actual grid, but maybe it can be toggled just on the video. I'm not sure if that's a great idea but it could be nice!

Puzzle idea: A ship going through the grid with the fog revealing ‘uncharted territory’ by making the blue sea lighter colour , sea monsters appear, etc.

Dear Simon, at 52:15 you made the deduction that the snake couldn't go through R2C9 too quickly. The orange region could have gone up in C9 via R6C9, R6C8, R5C8, R4C8, R4C4, R3C9, R2C9, R2C8 with there being only 5 digits in column 9 and cage 6.