- Code: Select all
*-----------*
|...|43.|..8|
|1..|...|42.|
|4.2|5..|7.3|
|---+---+---|
|...|.9.|.7.|
|..7|6.3|2..|
|.4.|.5.|...|
|---+---+---|
|7.8|..5|1.9|
|.35|...|..7|
|6..|.87|...|
*-----------*
Play/Print this puzzle online
February 10, 2014
9 posts
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February 10, 2014
by ArkieTech » Mon Feb 10, 2014 12:00 am
Play/Print this puzzle online
dan
-
ArkieTech - Posts: 3355
- Joined: 29 May 2006
- Location: NW Arkansas USA
Re: February 10, 2014
by pjb » Mon Feb 10, 2014 12:53 am
- Code: Select all
5 7 69 | 4 3 2 | 9-6 1 8
1 69 3 | 8 7 69 | 4 2 5
4 8 2 | 5 16 169 | 7 a69 3
---------------------+----------------------+---------------------
3 56 16 | 2 9 148 |c58 7 146
8 59 7 | 6 14 3 | 2 b59 14
2 4 169 | 7 5 18 | 389 389 16
---------------------+----------------------+---------------------
7 2 8 | 3 46 5 | 1 4-6 9
9 3 5 | 1 2 46 |d68 48-6 7
6 1 4 | 9 8 7 | 35 35 2
(6=9) r3c8 - (9=5) r5c8 - (5=8) r4c7 - (8=6) r8c7 => -6 r1c7, r78c8; stte
Phil
- pjb
- 2014 Supporter
- Posts: 2568
- Joined: 11 September 2011
- Location: Sydney, Australia
Re: February 10, 2014
by tlanglet » Mon Feb 10, 2014 2:31 am
- Code: Select all
*--------------------------------------------------*
| 5 7 69 | 4 3 2 |a69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 6-9 3 |
|----------------+----------------+----------------|
| 3 56 16 | 2 9 148 |b58 7 146 |
| 8 59 7 | 6 14 3 | 2 c59 14 |
| 2 4 169 | 7 5 18 | 38-9 389 16 |
|----------------+----------------+----------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 |b68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
*--------------------------------------------------*
(9=6)r1c7-(6=85)r84c7-(5=9)r5c8 => r3c8,r6c7<>9
Ted
- tlanglet
- 2010 Supporter
- Posts: 538
- Joined: 29 May 2010
Re: February 10, 2014
by SteveG48 » Mon Feb 10, 2014 3:29 am
- Code: Select all
*--------------------------------------------------*
| 5 7 e69 | 4 3 2 |d69 1 8 |
| 1 f69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
*----------------+----------------+----------------|
| 3 56 16 | 2 9 148 |b58 7 146 |
| 8 5-9 7 | 6 14 3 | 2 a59 14 |
| 2 4 169 | 7 5 18 | 389 389 16 |
*----------------+----------------+----------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 |c68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
*--------------------------------------------------*
(9=5)r5c8 - (5=8)r4c7 - (8=6)r8c7 - r1c7 = r1c3 - (6=9)r2c2 => -9 r5c2 ; stte
Steve
-
SteveG48 - 2019 Supporter
- Posts: 4248
- Joined: 08 November 2013
- Location: Orlando, Florida
Re: February 10, 2014
by Leren » Mon Feb 10, 2014 10:38 am
- Code: Select all
*--------------------------------------------------------------*
| 5 7 69 | 4 3 2 | 69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
|--------------------+--------------------+--------------------|
| 3 56 16 | 2 9 148 |a58 7 146 |
| 8 59 7 | 6 14 3 | 2 59 14 |
| 2 4 169 | 7 5 18 | 389 d39-8 16 |
|--------------------+--------------------+--------------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | 68 468 7 |
| 6 1 4 | 9 8 7 |b35 c35 2 |
*--------------------------------------------------------------*
H2 Wing: (8=5) r4c7 - r9c7 = (5-3) r9c8 = (3) r6c8 => - 8 r6c8; stte
Leren
- Leren
- Posts: 5041
- Joined: 03 June 2012
Re: February 10, 2014
by ArkieTech » Mon Feb 10, 2014 11:51 am
- Code: Select all
*--------------------------------------------------*
| 5 7 69 | 4 3 2 | 69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
|----------------+----------------+----------------|
| 3 56 16 | 2 9 148 | 58 7 146 |
| 8 59 7 | 6 14 3 | 2 59 14 |
| 2 4 169 | 7 5 18 | 389 389 16 |
|----------------+----------------+----------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | 68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
*--------------------------------------------------*
(6=8)r8c7-(8=9)r4c7,r5c8 => -9r3c8, -6r1c7; ste
dan
-
ArkieTech - Posts: 3355
- Joined: 29 May 2006
- Location: NW Arkansas USA
Re: February 10, 2014
by Ngisa » Mon Feb 10, 2014 12:03 pm
- Code: Select all
+----------+----------+-------------+
| 5 7 g69 | 4 3 2 | 9-6 1 8 |
| 1 f69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
+----------+----------+-------------+
| 3 e56 16 | 2 9 148 | b58 7 146 |
| 8 d59 7 | 6 14 3 | 2 c59 14 |
| 2 4 169 | 7 5 18 | 389 389 16 |
+----------+----------+-------------+
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | a68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
+----------+----------+-------------+
(6=8)r8c7-(8=5)r4c7-(5=9)r5c8-(9=5)r5c2-(5=6)r4c2-(6=9)r2c2-(9=6)r1c3 => -6r1c7; stte.
- Ngisa
- Posts: 1385
- Joined: 18 November 2012
Re: February 10, 2014
by daj95376 » Mon Feb 10, 2014 4:39 pm
_
I tried this as a BUG, but it turns out that six of the seven BUG-breaker candidates are false. This presented more effort than I was prepared to tackle.
What makes this pattern noteworthy is that the BUG doesn't immediately appear when the BUG-breaker candidates are eliminated. Instead, you need to follow these eliminations with r4c3=1 to clear <6> from appearing three times in [r4], [c3], and [b4]. At this point, the BUG remains.
I then went on to toy with the <16> UR in r46c39.
Unfortunately, the resulting assignment doesn't crack the puzzle. Aaaagh!
I tried this as a BUG, but it turns out that six of the seven BUG-breaker candidates are false. This presented more effort than I was prepared to tackle.
- Code: Select all
BUG+7 layout
+-----------------------------------------------------+
| 5 7 69 | 4 3 2 | 69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 19+6 | 7 69 3 |
|-----------------+-----------------+-----------------|
| 3 56 16 | 2 9 48+1 | 58 7 46+1 |
| 8 59 7 | 6 14 3 | 2 59 14 |
| 2 4 69+1 | 7 5 18 | 39+8 38+9 16 |
|-----------------+-----------------+-----------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | 68 48+6 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
+-----------------------------------------------------+
# 35 eliminations remain
What makes this pattern noteworthy is that the BUG doesn't immediately appear when the BUG-breaker candidates are eliminated. Instead, you need to follow these eliminations with r4c3=1 to clear <6> from appearing three times in [r4], [c3], and [b4]. At this point, the BUG remains.
I then went on to toy with the <16> UR in r46c39.
- Code: Select all
+-----------------------------------------------------+
| 5 7 69 | 4 3 2 | 69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
|-----------------+-----------------+-----------------|
| 3 56 *16 | 2 9 148 | 58 7 *16+4 |
| 8 59 7 | 6 14 3 | 2 59 14 |
| 2 4 *16+9 | 7 5 18 | 389 389 *16 |
|-----------------+-----------------+-----------------|
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | 68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
+-----------------------------------------------------+
# 35 eliminations remain
4r4c9 =UR16= 9r6c3 - (9=5)r5c2 - (5=61)r4c23 - (61=4)r4c9
Unfortunately, the resulting assignment doesn't crack the puzzle. Aaaagh!
Last edited by daj95376 on Mon Feb 10, 2014 4:54 pm, edited 2 times in total.
- daj95376
- 2014 Supporter
- Posts: 2624
- Joined: 15 May 2006
Re: February 10, 2014
by Marty R. » Mon Feb 10, 2014 4:48 pm
- Code: Select all
+----------+----------+-------------+
| 5 7 69 | 4 3 2 | 69 1 8 |
| 1 69 3 | 8 7 69 | 4 2 5 |
| 4 8 2 | 5 16 169 | 7 69 3 |
+----------+----------+-------------+
| 3 56 16 | 2 9 148 | 58 7 146 |
| 8 59 7 | 6 14 3 | 2 59 14 |
| 2 4 169 | 7 5 18 | 389 389 16 |
+----------+----------+-------------+
| 7 2 8 | 3 46 5 | 1 46 9 |
| 9 3 5 | 1 2 46 | 68 468 7 |
| 6 1 4 | 9 8 7 | 35 35 2 |
+----------+----------+-------------+
Play this puzzle online at the Daily Sudoku site
Same elimination as some others. XY-Wing (58-6) with transport
(6=8)r8c7-(8=5)r4c7-(5=6)r4c2-r2c2=r1c3=>6
- Marty R.
- Posts: 1508
- Joined: 23 October 2012
- Location: Rochester, New York, USA
9 posts
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