Anyone interested in starting a Sudoko Help/Advice thread?

Forums › Off topic › Anyone interested in starting a Sudoko Help/Advice thread?

1 | 2 | 3

3646 posts

Uber Geek
+1 received by user: 4554

ID Verified

#2702255 5-May-2021 13:52

duckDecoy:

I'm stuck on this one.

..

Can anyone help get me going again?

I haven't finished it yet, but to get the next digit

there's a hidden triple in box 8

that forces a pair in R1C5, R3C5

that in turn forces a digit into R2C5, R2C6, which forces it into R1C2 and that frees things up somewhat.

Sometimes I use big words I don't always fully understand in an effort to make myself sound more photosynthesis.

duckDecoy

946 posts

Ultimate Geek
+1 received by user: 432

Subscriber

#2702309 5-May-2021 14:04

floydbloke:

there's a hidden triple in box 8

Not sure if there is standard naming for the boxes in Sudoku, but which is box 8? And which is box 1?

frankv

5705 posts

Uber Geek
+1 received by user: 3666

Lifetime subscriber

#2702312 5-May-2021 14:08

floydbloke:

there's a hidden triple in box 8

What's a hidden triple?

duckDecoy

946 posts

Ultimate Geek
+1 received by user: 432

Subscriber

#2702323 5-May-2021 14:15

floydbloke:

there's a hidden triple in box 8

Is the hidden triple the bottom row center box, and its 5-3-6? The R9C6 cannot contain 3, but that still counts as part of a hidden triple? I.e. if we have 3 and only 3 squares in a box where the numbers from the triple appear in, its a triple. If that's the case then this is a new technique I didn't know about, so thanks! I have only ever looked for where all of the 3 squares contained ALL of the three numbers.

floydbloke

3646 posts

Uber Geek
+1 received by user: 4554

ID Verified

#2702348 5-May-2021 14:42

duckDecoy:

floydbloke:

there's a hidden triple in box 8

Is the hidden triple the bottom row center box, and its 5-3-6? The R9C6 cannot contain 3, but that still counts as part of a hidden triple? I.e. if we have 3 and only 3 squares in a box where the numbers from the triple appear in, its a triple. If that's the case then this is a new technique I didn't know about, so thanks! I have only ever looked for where all of the 3 squares contained ALL of the three numbers.

Spot on. that 'hidden triple', the 5-3-6 must occupy those 3 cells so it's blocked for any other numbers. So then think where the 1 needs to go in box 8, and the effect that has on box 2.

Re numbering, not sure if there is an official format but this is starting top-left then left to right working your way down is how CrackingThe Cryptic refer to them so I have adopted that.

Sometimes I use big words I don't always fully understand in an effort to make myself sound more photosynthesis.

Brunzy

2019 posts

Uber Geek
+1 received by user: 241

Trusted

#2702542 5-May-2021 19:05

Top row after the 9 is a 7( courtesy of the hidden triple.
That solves the next top box ( 1/7)

Mighty Ape

Shop now at Mighty Ape (affiliate link).

SJB

2945 posts

Uber Geek
+1 received by user: 2287
Inactive user

#2702841 6-May-2021 10:23

I always try to do it without writing the possible combinations in. I did that when I started but it seems a bit like it's against the spirit of the game. Same as writing out letter combinations for cryptic crosswords.

duckDecoy

946 posts

Ultimate Geek
+1 received by user: 432

Subscriber

#2708384 17-May-2021 12:54

Can anyone get me going again on this one?

Thanks

floydbloke

3646 posts

Uber Geek
+1 received by user: 4554

ID Verified

#2708468 17-May-2021 15:00

duckDecoy:

Can anyone get me going again on this one?

..

Thanks

That's a tough one alright, look for a hidden triple in column 6

Sometimes I use big words I don't always fully understand in an effort to make myself sound more photosynthesis.

frankv

5705 posts

Uber Geek
+1 received by user: 3666

Lifetime subscriber

#2708482 17-May-2021 15:20

Row 1: (1 or 6) in col 1,

Row 2: col 1 & 3 are (2 or 4) and col 8 & 9 are (1 or 7)

Row 3: (1 or 7) in col 2, (6 or 7 in col 3), (1 or 6) in col 6

duckDecoy

946 posts

Ultimate Geek
+1 received by user: 432

Subscriber

#2709600 19-May-2021 12:33

I still haven't made any progress on this despite the replies I got. I've added my tick marks in now (not sure if that helps anyone, but i didnt want to have to do them again) Anyone able to give me some ideas on how to find the next number?

HP

Shop now for HP laptops and other devices (affiliate link).

frankv

5705 posts

Uber Geek
+1 received by user: 3666

Lifetime subscriber

#2709609 19-May-2021 12:58

Col 5, one of row 6,7,8 must be a 1 (because there's no 1s possible in the other cells).

So no other 1s in the bottom centre box.

So row 8, col 4 must be a 4.

duckDecoy

946 posts

Ultimate Geek
+1 received by user: 432

Subscriber

#2709624 19-May-2021 13:45

frankv:

Col 5, one of row 6,7,8 must be a 1 (because there's no 1s possible in the other cells).

So no other 1s in the bottom centre box.

So row 8, col 4 must be a 4.

Boom, thanks.