The New Sudoku Players' Forum

[kakuroatk]

Here is a simple sudoku variation that I created which encompasses 4 mini 6x6 sudokus:



This puzzle can be playable online here: https://www.atksolutions.com/games/sudoku.html
and the puzzle # is E10011 which can be entered by clicking the pencil/paper icon on the main screen.

The numbers used for this puzzle is 1 - 6 and this is listed as an easy.

Any good feedback is welcome.

[creint]

Only singles required, should be very easy because of large bottlenecks. 11 steps for 93 placements, you probably could find on average 9 placements at any point during solving.

[urhegyi]

A computer generated hard full 9X9 Quad Sudoku

Code: Select all

#4//B4,N/J4,N/B20,N/J20,N
.6...258...4.......9..........8...3.1.83..9..34....8....9.8.42.4...7.............
.279...1.......2.........5..3...7.....9..54.1..4....26.13.4.5......7...2.........
.........9...8......4.1.72.14....6..3.89..1.....5...3..7.........3.......2...357.
.............7...8.17.4.2....3....51..4..97.3.6...5..........1.......4...281...7.

[kakuroatk]

Here is a hard puzzle:



It is puzzle #H60008.

Do you find it difficult even though only digits 1 through 6 are being used?

[Hajime]

A computer generated hard full 9X9 Quad Sudoku

To get such a nice symmetric layout like the first Mini Quad, you can change the symmetry type from T to X in Gen_Params of SiSeSuSo.

[Hajime]

Here is a simple sudoku variation that I created which encompasses 4 mini 6x6 sudokus:
....
Any good feedback is welcome.

But it is not that easy... I tried the first (E10011) manually on the website 3 times and all went wrong.
It would be nice that all possible pencil marks can be added or that you can go back (now limited to 5 steps)

[kakuroatk]

Hi Hajime. Thank you for the feedback. I am still trying to figure out the best way to do an auto-fill feature.
Right now there is a nice copy and paste feature "C-copy cell / V - paste cell" which can fill the boxes pretty quickly.
Lets say you want to fill a constraint: just type the pencil-marks, press C, move to the next cell and press V, move to another cell and press V again, etc...
Because of the overlapping mini-sudokus, I find it best to come up with a system to reduce the chance of error from the overlap.
I usually fill the boxes first and then work on the rows and columns. In the end, E10011 should unravel pretty quickly.

[urhegyi]

Solving the first easy one(E10011) was a question to find the right pencilmark technique.
Once you have solved the first and third 6x6 the other 2 ones solve rather easily.

[urhegyi]

After finding out how the easy ones can be solved, i will attack now your hard example(H60008) to find out if it's hard because of a lot of bookkeeping or if there are special techniques involved.

[1to9only]

i will attack now your hard example(H60008)

It is Diabolical...

Code: Select all

1........6..5....6.4.1.....2........ ED=3.2/3.2/2.6
...4.....2.36.4..............5...... ED=8.2/8.2/2.6
......5..............1.44.6.....3... ED=8.9/8.9/2.6
........2.....5.4.4....5..6........1 ED=8.4/1.5/1.5
ED=8.9/1.5/1.5


Solution: Show

165342432615513426246153351264624531
236451541263614532325146462315153624
624531531426145362362154456213213645
153624642513235146461235316452524361

Edit: revised ratings.