Let's Do Some Hard Sudoku Sums!

▶SUPPORT US + ACCESS EXCLUSIVE "CRACKING THE CRYPTIC" PUZZLES/VIDEOS◀

▶SEND US PUZZLES TO SOLVE/CONTACT US◀

▶FOLLOW US◀
Twitter: #crypticcracking

▶SOFTWARE◀

▶ABOUT US◀
Hi! We're Simon Anthony and Mark Goodliffe, two of the UK's most enthusiastic puzzle solvers. We have both represented the UK at the World Sudoku Championships and the World Puzzle Championships. We're also "cryptic crossword" aficionados. Mark is the eleven-time winner of The Times championship and Simon is the former record holder for most consecutive correct solutions to The Listener crossword. We hope we can help your puzzle solving while also introducing you to some of the world's best puzzles.

Thank you for watching!
Simon and Mark

[chadrknight]

Very impressive solving! I'll just be pleased that I noticed something while you were thinking we were yelling at the screen (from 21:00): in the middle left box, you had the vertical cage in column 1 equal to a cage which totaled 6, and you already knew one cell was a 5. Not sure if that would've accelerated your finish, but I got to feel perceptive :)

[teleportingbiscuit]

Puzzle: is rated 10/10 and has an average solve time of almost 50 minutes

Simon: Completes in under half that

These guys are absolute beasts

[lynnrinzz]

I got lost on how you cracked the 1 in r3c3 😅 but nonetheless it was fascinating to watch how your brain works! Thanks for the video!

[PickledWhispers]

I used the same logic to crack this as you, (using extremities to isolate the 6 in R7C5) but I tried the 1 in the top-left first instead of the 9, which made me quicker by sheer luck!
Final time 23m37s. First time I've beaten one of your solve times on these. Full credit for my improvement goes to your videos!

[Pilotdave]

I’m no where near logically advanced as you and others in the comment section but I love all your videos! Keep up the great work

[juneguts]

i'll be honest, what fascinates me more than the puzzle itself is the software used to solve it, very neat stuff!

[orNICOrynque]

I tried it and arrived at the same point at 9:00 but I couldn’t see how to continue so I went back to the video to see how you did and then ??? I would never have thought of it well done !

[Loptr__]

I tried this as all puzzles I get from your channel. Took me 2 hours and 21 minutes, but I powered through and got there at the end

[Pyromonkey]

Holy moly. That middle set logic was absolutely brutal. I bashed my face on it for a good 40 minutes before I gave up and allowed your giant brain to solve it for me. Once you gave me the 1 in r3c3 I was able to solve it out from there, but that was absolutely brilliant. Thanks for the insane logic step (and I'm even more impressed you did it in your head. I had 12 pieces of paper scattered about with random math equations scribbled and crossed out all over).

[minikretz]

The only time I scream at my screen is when you do amazing logic

[tone]

Aw, man... I was pretty immediately drawn to that equality pair in box 2, but I wasn't quite able to think it through far enough to crack it. Good to know I was at least on the right path. Great solve!

[Tehom]

There was a way to place a 6 in c1r9 fairly early. You have ruled it out from the other two bottom boxes, so it can only go in c1r9 or in the 8 cage. But the 2 for row 9 has already got to be in the middle bottom box, so the 8 cage can't be {2, 6}, so 6 goes in c1r9.

[sdrawkcab]

Yeah these are way over my head. I think the biggest thing I'm missing is checking the edge cases (the min and maxes) which is what helped you solve this puzzle.

I couldn't even finish the normal killer sudoku from that day.

[jenncardona]

Your thought process to get that 1 at r3c3 completely lost me


im not big brained enough 😶

[juneguts]

20:58 at this point you could tell that the box with a 5 & (1 or 7) had to equal 6, because it's equal to a box that is only (2 & 4).

[jkid]

Nice maths! 👍🏻 Really wowed me, this one

[marksearle]

first view and comment? always enjoy watching killer sudoku on cracking the cryptic, please keep them coming! cheers

[nrrutube]

I saw that one and quickly got scared away, I look forward to seeing what insights I missed!

[nicokuhne]

incredible solve. that chain at the beginning was too much for me.

[bachgammon]

Lovely stuff! I wonder how much I would have to subscribe on Patreon for you both to only solve "greater than" Sudoku puzzles and barred crosswords? :)