dailysudoku.com :: View topic

dailysudoku.com
Discussion of Daily Sudoku puzzles

FAQ

Memberlist

Usergroups

Profile

very hard VI

dailysudoku.com Forum Index -> Other puzzles

View previous topic :: View next topic

Author

Message

Ajò Dimonios

Joined: 01 May 2017
Posts: 339
Location: Sassari Italy

Posted: Mon Aug 21, 2017 4:52 pm Post subject: very hard VI

Hi everyone

Code:

+-------+-------+-------+
| 2 . . | 7 . . | . . . |
| . 1 4 | . . 6 | 2 5 . |
| 3 . . | . 4 2 | . . . |
+-------+-------+-------+
| . 7 2 | 9 . . | 6 . . |
| . . . | . . . | . . . |
| . . 6 | . . 8 | 7 1 . |
+-------+-------+-------+
| . . . | 2 8 . | . . 3 |
| . 2 5 | 6 . . | 4 9 . |
| . . . | . . 4 | . . 6 |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

Ciao a Tutti
Paolo

JC Van Hay

Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

Posted: Mon Aug 21, 2017 8:30 pm Post subject:

8 singles; exclusions by the solutions of the 3s, the 5s and C2

Code:

+-------------------------+-------------------+-------------------+
| 2 56 89 | 7 159 159 | 1389 3468 1489 |
| 789 1 4 | 38 39 6 | 2 5 789 |
| 3 56 789 | 158 4 2 | 189 68 1789 |
+-------------------------+-------------------+-------------------+
| 1458 7 2 | 9 135 135 | 6 348 458 |
| 14589 39(8) 189(3) | 135(4) 6 7 | 389 (348) 2 |
| 459 9(3) 6 | 5(34) 2 8 | 7 1 459 |
+-------------------------+-------------------+-------------------+
| 6 4 19 | 2 8 159 | 15 7 3 |
| 178 2 5 | 6 137 13 | 4 9 18 |
| 1789 9-3(8) 179-8(3) | 15 1579 4 | 158 2 6 |
+-------------------------+-------------------+-------------------+
3r9c3 3r5c3
3r6c2 3r6c4
4r6c4 4r5c4
3r5c8 4r5c8 8r5c8
8r5c2 8r9c2 -> 3r9c3==8r9c2 => -{3r9c2, 8r9c3}; 3 singles

Code:

+-----------------------+-----------------------+--------------------+
| 2 56 9(8) | 7 159 159 | 1389 3468 1489 |
| (89) 1 4 | 8-3 (39) 6 | 2 5 7 |
| 3 56 7 | 158 4 2 | 189 68 189 |
+-----------------------+-----------------------+--------------------+
| 1458 7 2 | 9 15-3 135 | 6 348 458 |
| 1489(5) (389) 19(8) | 134(5) 6 7 | 38(9) 348 2 |
| 49(5) 9(3) 6 | 4(35) 2 8 | 7 1 4(59) |
+-----------------------+-----------------------+--------------------+
| 6 4 (19) | 2 8 1(59) | 15 7 3 |
| (178) 2 5 | 6 13(7) 13 | 4 9 18 |
| 1789 89 3 | 1(5) 1(579) 4 | 158 2 6 |
+-----------------------+-----------------------+--------------------+

Kraken Cell (389)r5c2 -> 3r6c4==3r2c5 => -{3r2c4, 3r4c5}; 5 singles; exclusion by the solutions of R4; stte
3r5c2-3r6c2=3r6c4
||
8r5c2-8r5c3=8r1c3-(8=93)r2c14
||
9r5c2-9r5c7=(9-5)r6c9=XWing(5r56c14)-5r9c4=HP(59-7)r7c6.r9c5=7r8c5-7r8c1=*[(9=*81)r28c1-(1=9)r7c3-9r7c6=9r9c5]-(9=3)r2c5

Ajò Dimonios

Joined: 01 May 2017
Posts: 339
Location: Sassari Italy

Posted: Mon Aug 21, 2017 10:01 pm Post subject:

Hi everyone

Code:

+------------------+---------------+----------------+
| 2 5689 89 | 7 159 159 | 1389 3468 1489 |
| 789 1 4 | 38 39 6 | 2 5 789 |
| 3 5689 789 | 158 4 2 | 189 68 1789 |
+------------------+---------------+----------------+
| 1458 7 2 | 9 135 135 | 6 348 458 |
| 14589 389 1389 | 1345 6 7 | 389 348 2 |
| 459 39 6 | 345 2 8 | 7 1 459 |
+------------------+---------------+----------------+
| 6 4 19 | 2 8 159 | 15 7 3 |
| 178 2 5 | 6 137 13 | 4 9 18 |
| 1789 389 13789 | 15 1579 4 | 158 2 6 |
+------------------+---------------+----------------+

Play this puzzle online at the Daily Sudoku site

R4C1=1 => singles and locked candidates to the error =>-1R4C1
R4C6=3 => singles and locked candidates to the error =>-3R4C6
R4C5=5 => singles and locked candidates to the error =>-5R4C5
R4C8=4 => singles and locked candidates to the error =>-4R4C8
R5C1=1 => singles and locked candidates to the error =>-1R5C1=>stte.

Ciao a Tutti
Paolo

Display posts from previous:

	dailysudoku.com Forum Index -> Other puzzles	All times are GMT
Page 1 of 1

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum