- Code: Select all
*-----------*
|.7.|19.|..2|
|...|84.|.9.|
|...|...|5.4|
|---+---+---|
|.2.|9..|.7.|
|..3|...|9..|
|.8.|..3|.6.|
|---+---+---|
|3.2|...|...|
|.4.|.59|...|
|6..|.71|.5.|
*-----------*
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Dan's Dolf the Dandy Dude December 21, 2013
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Dan's Dolf the Dandy Dude December 21, 2013
by ArkieTech » Sat Dec 21, 2013 12:36 am
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dan
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ArkieTech - Posts: 3355
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by Leren » Sat Dec 21, 2013 1:01 am
- Code: Select all
*--------------------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 p16 b169 |p67 3 267 | 5 8 4 |
|--------------------+--------------------+--------------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
| 49 8 p79 | 4-7 1 3 | 2 6 5 |
|--------------------+--------------------+--------------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------------------*
WXY-Z Wing (169-7): Pivot/Base r3c3, Pincers r3c24, r6c3 => - 7 r6c4; stte
Expressed as a chain (7=6) r3c4 - (6=1) r3c2 - (16=9) r3c3 - (9=7) r6c3
Suggestion for tomorrow's puzzle name: Dan's dipuC
Leren
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by SteveG48 » Sat Dec 21, 2013 1:11 am
Dang it! Same as Leren:
(7)r6c4 - (7=9)r6c3 - (9=16)r3c23 - (6=7)r3c4 => -7 r6c4 ; stte
- Code: Select all
*--------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 c16 c169 |d67 3 267 | 5 8 4 |
*----------------+----------------+----------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
| 49 8 b79 |a4-7 1 3 | 2 6 5 |
*----------------+----------------+----------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------*
(7)r6c4 - (7=9)r6c3 - (9=16)r3c23 - (6=7)r3c4 => -7 r6c4 ; stte
Steve
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by SteveG48 » Sat Dec 21, 2013 2:02 am
So how about this one instead.
(6)r2c6 - r3c46|r5c6 = r5c2 - r3c2 = (6-9)r3c3 = r3c1 - (9=4)r6c1 - (4=7)r6c4 - r5c6 = (7-2)r3c6 = r2c6 => -6 r2c6 ; stte
- Code: Select all
*--------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 ak2-6 | 1 9 7 |
|f29 d16 e169 |b67 3 bj267 | 5 8 4 |
*----------------+----------------+----------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 c16 3 | 5 2 bi678 | 9 4 18 |
|g49 8 79 |h47 1 3 | 2 6 5 |
*----------------+----------------+----------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------*
(6)r2c6 - r3c46|r5c6 = r5c2 - r3c2 = (6-9)r3c3 = r3c1 - (9=4)r6c1 - (4=7)r6c4 - r5c6 = (7-2)r3c6 = r2c6 => -6 r2c6 ; stte
Steve
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by pjb » Sat Dec 21, 2013 2:13 am
- Code: Select all
8 7 4 | 1 9 5 | 6 3 2
5-2 3 56 | 8 4 a26 | 1 9 7
e29 16 169 |b67 3 67-2 | 5 8 4
---------------------+----------------------+---------------------
45 2 156 | 9 68 468 | 3 7 18
17 16 3 | 5 2 678 | 9 4 18
d49 8 79 |c47 1 3 | 2 6 5
---------------------+----------------------+---------------------
3 5 2 | 46 68 468 | 7 1 9
17 4 17 | 3 5 9 | 8 2 6
6 9 8 | 2 7 1 | 4 5 3
(2=6) r2c6 - (6=7) r3c4 - (7=4) r6c4 - (4=9) r6c1 - (9=2) r3c1 => -2 r2c1, r3c6; stte
Phil
PS Leren's solution can also be expressed as ALS XZ: A: r6c3; B: r3c234; X=9; Z=7
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by tlanglet » Sat Dec 21, 2013 3:58 am
- Code: Select all
*--------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 16 *69=1 |*67 3 267 | 5 8 4 |
|----------------+----------------+----------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
| 49 8 *79 | 4-7 1 3 | 2 6 5 |
|----------------+----------------+----------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------*
AXY-wing(69-7) with pivot (69=1)r3c3, pincers (67)r3c4 & (79)r6c3 => r6c4<>7
[xy-wing(69-7) => r6c4<>7] = [1r3c3-(1=67)r3c24 => r6c4<>7]
Ted
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by SteveG48 » Sat Dec 21, 2013 5:28 am
- Code: Select all
*--------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
|b25 3 56 | 8 4 a2-6 | 1 9 7 |
|c29 16 169 |f67 3 267 | 5 8 4 |
*----------------+----------------+----------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
|d49 8 79 |e47 1 3 | 2 6 5 |
*----------------+----------------+----------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------*
Or a shorter version of my second solution:
(6-2)r2c6 = r2c1 - (2=9)r3c1 - (9=4)r6c1 - (4=7)r6c4 - (7=6)r3c4 => -6 r2c6
Steve
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by ArkieTech » Sat Dec 21, 2013 11:15 am
- Code: Select all
*--------------------------------------------------*
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 *16 *169 |*67 3 267 | 5 8 4 |
|----------------+----------------+----------------|
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
| 49 8 *79 | 4-7 1 3 | 2 6 5 |
|----------------+----------------+----------------|
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
*--------------------------------------------------*
(7=9)r6c3-(9=16)r3c23-(6=7)r3c4 => -7r6c4; ste
or
(7=9)r6c3-(9=7)r3c234 => -7r6c4; ste
dan
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ArkieTech - Posts: 3355
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by daj95376 » Sat Dec 21, 2013 6:11 pm
_
This seems like a perfect puzzle for me to practice searching for DPs. Especially since all four of the non-DP candidates in the following <168> pattern are true in the solution.
This seems like a perfect puzzle for me to practice searching for DPs. Especially since all four of the non-DP candidates in the following <168> pattern are true in the solution.
- Code: Select all
+-----------------------------------------------------+
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 *16 *16+9 | 67 3 267 | 5 8 4 |
|-----------------+-----------------+-----------------|
| 45 2 *16+5 | 9 *68 468 | 3 7 *18 |
| 17 *16 3 | 5 2 *68+7 | 9 4 *18 |
| 49 8 79 | 47 1 3 | 2 6 5 |
|-----------------+-----------------+-----------------|
| 3 5 2 | 46 *68 *68+4 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
+-----------------------------------------------------+
# 31 eliminations remain
(9)r3c3 - (9=2)r3c1 - (2=5)r2c2 ( -5)r4c1
(5)r4c3 ( -5)r4c1
(7)r5c6 - (7=4)r6c4 - (4)r6c1 = (4-5)r4c1
(4)r7c6 - r7c4 = (4)r6c4 - (4)r6c1 = (4-5)r4c1
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Re: Dan's Dolf the Dandy Dude December 21, 2013
by Marty R. » Sat Dec 21, 2013 6:22 pm
- Code: Select all
+-----------+-----------+--------+
| 8 7 4 | 1 9 5 | 6 3 2 |
| 25 3 56 | 8 4 26 | 1 9 7 |
| 29 16 169 | 67 3 267 | 5 8 4 |
+-----------+-----------+--------+
| 45 2 156 | 9 68 468 | 3 7 18 |
| 17 16 3 | 5 2 678 | 9 4 18 |
| 49 8 79 | 47 1 3 | 2 6 5 |
+-----------+-----------+--------+
| 3 5 2 | 46 68 468 | 7 1 9 |
| 17 4 17 | 3 5 9 | 8 2 6 |
| 6 9 8 | 2 7 1 | 4 5 3 |
+-----------+-----------+--------+
Play this puzzle online at the Daily Sudoku site
Same XY-Chain as Phil.
(2=6) r2c6 - (6=7) r3c4 - (7=4) r6c4 - (4=9) r6c1 - (9=2) r3c1 => -2 r2c1, r3c6
Alternate two-stepper: M-Wing starting with (6=7) in r3c4 plus BUG+3.
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