Jigsaw irregular sudoku: advice on next step

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Jigsaw irregular sudoku: advice on next step

Postby urhegyi » Tue Oct 13, 2020 3:19 pm

MapJ-1.jpg
MapJ-1.jpg (67.14 KiB) Viewed 36 times
Can someone help me to start again?
urhegyi
 
Posts: 44
Joined: 13 April 2020

Re: Jigsaw irregular sudoku: advice on next step

Postby creint » Tue Oct 13, 2020 3:41 pm

Code: Select all
. . 3 . . . 4 . 5
. . 9 . . . . . .
. . . . . 1 . . .
4 . . . . . 2 3 .
. 9 . . 7 . . . 4
9 . 4 . . . . . .
. . . . . . . . 8
6 . 2 . 8 . . 1 9
. 8 . 5 9 . . 4 .


Next step is at least one locked single.
For example 3b6 -> -3r6c29 -> 3r9c9
After all possible locked singles at that step you can place 3r3c2,9r4c4,3r5c6,3r9c9.
creint
 
Posts: 216
Joined: 20 January 2018

Re: Jigsaw irregular sudoku: advice on next step

Postby 1to9only » Tue Oct 13, 2020 3:50 pm

Have you tried my very excellent SudokuJigsawExplainer?
Download it here: https://github.com/1to9only/SudokuJigsawExplainer/releases
Run it:
Code: Select all
java.exe -jar SudokuJigsawExplainer.jar

Copy & Paste the following (it is one line, sudoku + jigsaw definition):
Code: Select all
..3...4.5..9..43.1....41...4.....23..9..7...49.4.........4....8642.8..19.8.59..4. 111233333111222333144442223114555522444456666775555688977766668999777888999997888

The pencilmarks (if you not want try above program!):
Code: Select all
+--------------------------+--------+--------------------------------------------+
| 1278     1267     3      | 26789  | 26       26789    4        26789    5      |
|                          |        +-----------------+                          |
| 2578     2567     9      | 2678     256      4      | 3        2678     1      |
|        +-----------------+-----------------+        +-----------------+        |
| 2578   | 23567    5678     23678    4      | 1        56789    256789 | 267    |
|        +--------+        +-----------------+-----------------+        +--------+
| 4        1567   | 15678  | 1689     156      5689     2      | 3        67     |
+-----------------+        +--------+        +-----------------+-----------------+
| 12358    9        1568     12368  | 7      | 23568    1568     2568     4      |
+-----------------+-----------------+        +--------+        +-----------------+
| 9        123567 | 4        1368     1356     3568   | 15678  | 2567     2367   |
+--------+        +-----------------+-----------------+        +--------+        |
| 137    | 123567   1567     4      | 12356    235679   15679    25679  | 8      |
|        +-----------------+        +-----------------+-----------------+        |
| 6        4        2      | 37       8        357    | 57       1        9      |
|                          +-----------------+        |                          |
| 137      8        17       5        9      | 2367   | 67       4        2367   |
+--------------------------------------------+--------+--------------------------+
1to9only
 
Posts: 2069
Joined: 04 April 2018


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