1 pearl among 4 diamands

Post puzzles for others to solve here.

1 pearl among 4 diamands

Postby Hajime » Sat May 09, 2026 1:32 pm

A multi-symmetric puzzle of 4 diamonds and SE=5.2/5.2/2.6, a pearl
Code: Select all
 . . 4 . . . 8 . .
 . 8 . 7 . 1 . 3 .
 7 . . . 4 . . . 9
 . 9 . 1 . 7 . 4 .
 . . 5 . . . 1 . .
 . 2 . 6 . 4 . 8 .
 2 . . . 6 . . . 8
 . 6 . 4 . 9 . 2 .
 . . 3 . . . 6 . . 
User avatar
Hajime
 
Posts: 1449
Joined: 20 April 2018
Location: Fryslân

Re: 1 pearl among 4 diamands

Postby pjb » Sat May 09, 2026 11:33 pm

Code: Select all
 1369-5 f135     4      | 2359   239    2356   | 8     c1567   1267-5 
a569     8       269    | 7      29     1      |b245    3     b2456   
 7      f135     126    | 2358   4      23568  | 2-5   c156    9     
------------------------+----------------------+---------------------
 368     9       68     | 1      2358   7      | 235    4      2356   
 3468    347     5      | 239    2389   23     | 1      679    2367   
 13      2       17     | 6      359    4      | 3579   8      357   
------------------------+----------------------+---------------------
 2       147     179    | 35     6      35     | 479    179    8     
 158     6       178    | 4      17     9      | 357    2      1357   
 149-5  e1457    3      | 28     17     28     | 6     d1579   147-5   

(5)r2c1 = r2c79 - r13c8 = r9c8 - r9c2 = r13c2 - loop => -5 r3c7, r9c19, r1c19; stte

Alternatively, jellyfish (r2468\c1579) has same eliminations

Phil
pjb
2014 Supporter
 
Posts: 2758
Joined: 11 September 2011
Location: Sydney, Australia

Re: 1 pearl among 4 diamands

Postby urhegyi » Tue May 12, 2026 4:32 pm

All the 5.2/5.2/2.6 with this pattern found at this moment: the first is found by HAJIME the second by myself.
Code: Select all
..4...8...8.7.1.3.7...4...9.9.1.7.4...5...1...2.6.4.8.2...6...8.6.4.9.2...3...6.. ED=5.2/5.2/2.6
..1...3...4.9.2.1.2...1...4.8.2.5.4...9...5...5.6.1.7.8...2...5.7.8.6.9...6...8.. ED=5.2/5.2/2.6
urhegyi
 
Posts: 766
Joined: 13 April 2020


Return to Puzzles