## Bored with no pencil marks

Everything about Sudoku that doesn't fit in one of the other sections

### Bored with no pencil marks

Has anyone tried making Sudoku harder? I've been solving them one 3x3 grid at a time. No pencil marks. Once you put a number in a 3x3, you have complete that 3x3 1-9 before proceeding to the next 3x3. Would love to know if there are more challenging rules to play by.
Turtle

Posts: 2
Joined: 27 October 2013

### Re: Bored with no pencil marks

I don't like being told what techniques I am or am not allowed to use when solving a puzzle.

I'm the same way at work. Please don't tell me how to do my job. Tell me the end result you want, and let me decide what is the best way to get there.

Bill Smythe
Smythe Dakota

Posts: 546
Joined: 11 February 2006

### Re: Bored with no pencil marks

Are you familiar with the more difficult puzzles common on this forum, but almost unheard of elsewhere?

JasonLion
2017 Supporter

Posts: 640
Joined: 25 October 2007
Location: Silver Spring, MD, USA

### Re: Bored with no pencil marks

More difficult puzzles? No.
Turtle

Posts: 2
Joined: 27 October 2013

### Re: Bored with no pencil marks

Sudoku puzzles vary in difficulty over a surprisingly large range. Consider this puzzle, submitted to the Patterns Game by blue:
Code: Select all
`4 1 . 8 . . . . .8 . 9 . . . 4 . .. 2 6 . . . . 8 .6 . . 4 . . . 2 .. . . . 3 . 1 . .. . . . . 5 . . 7. 6 . . 1 . 3 . .. . 2 9 . . . 6 .. . . . . 7 . . 5   ED=10.5/10.5/10.5`

In addition to the Patterns Game, you can look at the daily puzzles in the Puzzles area, where people try to solve the puzzle with a single non-trivial move.

JasonLion
2017 Supporter

Posts: 640
Joined: 25 October 2007
Location: Silver Spring, MD, USA

### Re: Bored with no pencil marks

where people try to solve the puzzle with a single non-trivial move.

Never heard that "non-trivial" term before. Is it the same as what people call advanced moves, aka non-basic?
Marty R.

Posts: 1508
Joined: 23 October 2012
Location: Rochester, New York, USA

### Re: Bored with no pencil marks

Correct, my casual use of "non=trivial" means anything that isn't one of the basic techniques.

JasonLion
2017 Supporter

Posts: 640
Joined: 25 October 2007
Location: Silver Spring, MD, USA