Samurai sudoku

For fans of Killer Sudoku, Samurai Sudoku and other variants

Samurai sudoku

Postby urhegyi » Wed Nov 25, 2020 10:51 pm

2020-11-25 (7).jpg
2020-11-25 (7).jpg (115.06 KiB) Viewed 111 times
Can each of these 5 variant grids be solved separately?
I hope to find out in a couple of days. I already found the jigsaw is solvable as separate puzzle.
urhegyi
 
Posts: 218
Joined: 13 April 2020

Re: Samurai sudoku

Postby urhegyi » Thu Nov 26, 2020 1:05 am

solution:
Hidden Text: Show
Code: Select all
316758924954312678728649351279435186831267549465981237642893715587126493193574862

Code: Select all
951768423127493865394156287265849371483621759678215934836574192512937648749382516

Code: Select all
715429836493678512862513749984362157231957684576841923647135298128794365359286471

Code: Select all
235918647974563128618742359456829731127635984893471562581296473342157896769384215

Code: Select all
298637541365491782471258396137982465684573129529164837946815273813729654752346918
urhegyi
 
Posts: 218
Joined: 13 April 2020

Re: Samurai sudoku

Postby m_b_metcalf » Thu Nov 26, 2020 10:58 am

urhegyi wrote:Can each of these 5 variant grids be solved separately?

You can't expect many responses when you fail to post text versions of the puzzles that can be easily copied. M
User avatar
m_b_metcalf
2017 Supporter
 
Posts: 11445
Joined: 15 May 2006
Location: Berlin

Re: Samurai sudoku

Postby urhegyi » Thu Nov 26, 2020 11:36 am

It was late at night.
Here they come:

Code: Select all
.1.7.8.2.9.4...6.8.2.....5.2...3...6...2.7...4...8.2.7.4...3...5.7.......9.5.4...

Code: Select all
.5.7.8.2.1.7...8.5.9.....8.2...4...1...6.1...6.8.1...4...5...9.......6.8...3.2.1.

Code: Select all
...4.9.......7........1....9.4.6...7.319.768.5...4.9.3....3........9.......2.6...

Code: Select all
.3.9.8...9.4.......1...2...4...2.7.1...6.5...8...7...2.8.....7.3.2...8.6.6.3.4.1.

Code: Select all
...6.7.4.......7.2...2...9.1.7.8...5...5.3...5...6...7.4.....7.8.3...6.4.5.3.6.1.
urhegyi
 
Posts: 218
Joined: 13 April 2020

Re: Samurai sudoku

Postby 1to9only » Thu Nov 26, 2020 11:48 am

Grid 1 on its own has multiple solutions, but once eliminations are done in box 9 from clues in grid 3, it solves easily, ED=2.8

Grid 2 solves on its own (as noted in OP), ED=1.7
Code: Select all
.5.7.8.2.1.7...8.5.9.....8.2...4...1...6.1...6.8.1...4...5...9.......6.8...3.2.1. 112334444122233344123335354122665554112655774112665777888665797888669797888999999 JS

SumoCueV1=0J0=5J0=0J1=7J2=0J2=8J3=0J3=2J3=0J3=1J0=0J1=7J1=0J1=0J2=0J2=8J2=0J3=5J3=0J0=9J1=0J2=0J2=0J2=0J4=0J2=8J4=0J3=2J0=0J1=0J1=0J5=4J5=0J4=0J4=0J4=1J3=0J0=0J0=0J1=6J5=0J4=1J4=0J6=0J6=0J3=6J0=0J0=8J1=0J5=1J5=0J4=0J6=0J6=4J6=0J7=0J7=0J7=5J5=0J5=0J4=0J6=9J8=0J6=0J7=0J7=0J7=0J5=0J5=0J8=6J6=0J8=8J6=0J7=0J7=0J7=3J8=0J8=2J8=0J8=1J8=0J8

Grid 3 on its own has multiple solutions, but after filling boxes 1 and 3, and eliminating candidates in box 7 from clues in grid 4, it solves with singles only, ED=1.2

I've not done grids 4 and 5, but I'm assuming they'll solve with singles!
1to9only
 
Posts: 2257
Joined: 04 April 2018

Re: Samurai sudoku

Postby urhegyi » Thu Nov 26, 2020 11:50 am

m_b_metcalf wrote:
urhegyi wrote:Can each of these 5 variant grids be solved separately?

You can't expect many responses when you fail to post text versions of the puzzles that can be easily copied. M

It was late at night. I needed 2,5 hours to solve them manually with pencilmarks on paper.
The Jigsaw is a good starting point, because it is a separate puzzle.
I will add the text version now.
urhegyi
 
Posts: 218
Joined: 13 April 2020

Re: Samurai sudoku

Postby m_b_metcalf » Thu Nov 26, 2020 1:44 pm

If I treat TL as X, fill in the full solution for TR (as I don't have jigsaw code), and treat M, BL and BR as standard sudokus, then I get this partial solution (where BL fails on just a UA4):
Code: Select all

  3  1  6  7  5  8  9  2  4           9  5  1  7  6  8  4  2  3
  9  5  4  3  1  2  6  7  8           1  2  7  4  9  3  8  6  5
  7  2  8  6  4  9  3  5  1           3  9  4  1  5  6  2  8  7
  2  7  9  4  3  5  1  8  6           2  6  5  8  4  9  3  7  1
  8  3  1  2  6  7  5  4  9           4  8  3  6  2  1  7  5  9
  4  6  5  9  8  1  2  3  7           6  7  8  2  1  5  9  3  4
  6  4  2  8  9  3  7  1  5  4  2  9  8  3  6  5  7  4  1  9  2
  5  8  7  1  2  6  4  9  3  6  7  8  5  1  2  9  3  7  6  4  8
  1  9  3  5  7  4  8  6  2  5  1  3  7  4  9  3  8  2  5  1  6
                    9  8  4  3  6  2  1  5  7                 
                    2  3  1  9  5  7  6  8  4                 
                    5  7  6  8  4  1  9  2  3                 
  2  3  5  9  1  8  6  4  7  1  3  5  2  9  8  6 **  7 **  4 **
  9  7  4  5  6  3  1  2  8  7  9  4  3  6  5 **  9 **  7  8  2
  6  1  8  7  4  2  3  5  9  2  8  6  4  7  1  2 **  8 **  9  6
  4  5 **  8  2  9  7 **  1           1  3  7 **  8  2 **  6  5
  1  2  7  6  3  5  9  8  4          **  8 **  5  7  3 **  2 **
  8  9 **  4  7  1  5 **  2           5  2 ** **  6 **  8  3  7
  5  8  1  2  9  6  4  7  3          **  4 **  8  1  5 **  7 **
  3  4  2  1  5  7  8  9  6           8  1  3  7  2  9  6  5  4
  7  6  9  3  8  4  2  1  5           7  5 **  3  4  6 **  1  8

User avatar
m_b_metcalf
2017 Supporter
 
Posts: 11445
Joined: 15 May 2006
Location: Berlin

Re: Samurai sudoku

Postby 1to9only » Thu Nov 26, 2020 5:12 pm

1to9only wrote:I've not done grids 4 and 5, but I'm assuming they'll solve with singles!

Grids 4 and 5 on their own have multiple solutions, but after copying givens from grid 3 solution, they solve easily, ED=1.2 and ED=1.5 respectively.
1to9only
 
Posts: 2257
Joined: 04 April 2018


Return to Sudoku variants