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Puzzle 10/09/29: C

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Wed Sep 29, 2010 4:23 pm Post subject: Puzzle 10/09/29: C

Code:

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

Play this puzzle online at the Daily Sudoku site

This puzzle has 34 clues and an XY rating. For extra "fun", try this version of the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

peterj

Joined: 26 Mar 2010
Posts: 974
Location: London, UK

Posted: Wed Sep 29, 2010 10:10 pm Post subject:

For the first one...

Quote:

xy-chain ; (1=5)r1c2 - (5=7)r1c6 - (7=5)r5c6 - (5=9)r6c5 - (9=1)r4c5 ; r4c2<>1

Too late to start the other one! ....

peterj

Joined: 26 Mar 2010
Posts: 974
Location: London, UK

Posted: Thu Sep 30, 2010 5:37 pm Post subject:

Two steps for the "more fun" one...

Quote:

m-wing(59) with pseudocell ; (5=1)r1c2-(1=9)r4c2 - r6c3=(9-5)r6c5=r2c5 ; r1c6<>5, r2c13<>5
skyscraper(7) r1, r7 ; r8c6<>7

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Thu Sep 30, 2010 9:57 pm Post subject:

For the first one, an XY-Wing (195) + pincer transport.

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Thu Sep 30, 2010 11:40 pm Post subject:

Code:

after basics: first puzzle
+--------------------------------------------------------------+
| 2 15 157 | 6 3 57 | 8 9 4 |
| 679 4 679 | 79 15 8 | 15 2 3 |
| 59 3 8 | 19 2 4 | 15 6 7 |
|--------------------+--------------------+--------------------|
| 3 19 2 | 8 19 6 | 7 4 5 |
| 8 156 156 | 17 4 57 | 9 3 2 |
| 4 7 59 | 2 59 3 | 6 1 8 |
|--------------------+--------------------+--------------------|
| 5679 569 5679 | 4 67 2 | 3 8 1 |
| 67 8 4 | 3 67 1 | 2 5 9 |
| 1 2 3 | 5 8 9 | 4 7 6 |
+--------------------------------------------------------------+
# 35 eliminations remain

M-Wing 2A (7=1)r5c4 - r5c3 = (1-7)r1c3 = (7)r2c13 => r2c4<>7
M-Wing 4A (7=1)r5c4 - r5c3 = (1-7)r1c3 = (7)r1c6 => r2c4,r5c6<>7
M-Wing 5B (1=5)r1c2 - r1c6 = (5-1)r2c5 = (1)r4c5 => r4c2<>1
-or-
W-Wing (5=1)r1c2 - r4c2 = r4c5 - (1=5)r2c5 => r1c6<>5
-or-
S-Wing (1)r1c3 = r5c3 - (1=7)r5c4 - r2c4 = (7)r1c6 => r1c3<>7
S-Wing (1)r1c3 = r5c3 - (1=7)r5c4 - r2c4 = (7)r2c13 => r1c3<>7
S-Wing (1)r1c3 = r5c3 - (1=7)r5c4 - r5c6 = (7)r1c6 => r1c3<>7
S-Wing (5)r2c5 = r1c6 - (5=1)r1c2 - r4c2 = (1)r4c5 => r2c5<>1
-or-
L-Wing (7)r5c4 = r2c4 - r1c6 = (7-1)r1c3 = (1)r5c3 => r5c4<>1
L-Wing (7)r5c4 = r2c4 - r2c13 = (7-1)r1c3 = (1)r5c3 => r5c4<>1
L-Wing (7)r5c4 = r5c6 - r1c6 = (7-1)r1c3 = (1)r5c3 => r5c4<>1

"fun" version

Code:

<19+5> XY-Wing r4c2/r1c2+r6c3 <> 5 r5c2,r12c3

+--------------------------------------------------------------+
| 2 15 17 | 6 3 157 | 8 9 4 |
| 5679 4 1679 | 1579 1579 8 | 15 2 3 |
| 59 3 8 | 159 2 4 | 15 6 7 |
|--------------------+--------------------+--------------------|
| 3 19 2 | 8 179 6 | 79 4 5 |
| 8 169 1569 | 1579 4 1579 | 79 3 2 |
| 4 7 59 | 2 59 3 | 6 1 8 |
|--------------------+--------------------+--------------------|
| 5679 569 679 | 4 67 2 | 3 8 1 |
| 67 8 4 | 3 167 17 | 2 5 9 |
| 1 2 3 | 59 8 59 | 4 7 6 |
+--------------------------------------------------------------+
# 53 eliminations remain

| transported | | --------------- L-Wing -------------- |
(5)r1c2 = r1c6 - r2c5 = r6c5 - r6c3 = (5-1)r5c3 = (1)r12c3 => r1c2<>1

c16r8 Skyscraper <> 7 r1c3,r2c4

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Fri Oct 01, 2010 12:49 am Post subject:

Quote:

after basics: first puzzle

Message received, no subtleties needed with me, but my screwup probably facilitated my solution! Laughing

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Fri Oct 01, 2010 5:10 am Post subject:

Marty R. wrote:

Message received, no subtleties needed with me, ...

Maybe you read something into my post that wasn't there. My point was to show the interesting solution to the second puzzle. I included the solution to the first puzzle for completeness and comparison.

Take care and I'll catch everyone in a few days when I return.

Regards, Danny

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Fri Oct 01, 2010 3:02 pm Post subject:

daj95376 wrote:

Marty R. wrote:

Message received, no subtleties needed with me, ...

I missed something with the basics because your post-basics grid went further than mine did and doesn't contain the move I played.

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