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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Apr 10, 2010 10:53 am Post subject: Puzzle 10/04/10 ___ BBDB |
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| Code: | +-----------------------+
| . . . | . . 4 | . . 5 |
| . 6 . | . . . | 9 2 3 |
| . . 2 | . . 9 | . . . |
|-------+-------+-------|
| . . . | . . . | . 1 . |
| . . . | . 8 . | . . 2 |
| 5 . 9 | . . 6 | . 8 . |
|-------+-------+-------|
| . 8 . | . . . | . 5 . |
| . 4 . | 2 . 7 | 8 9 . |
| 7 9 . | . 5 . | . . 1 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Apr 10, 2010 5:07 pm Post subject: |
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Seemed might be lots of ways through this.. took me four
| Quote: | Nice multi-colour wrap on 3s; r5c8<>3, r7c7<>3, r9c3<>3
xy-wing(357) with pincer transport (3)r7c6=r7c3, r5c23<>3, r4c35<>3
Type 1 UR (47); r6c7=3
xy-chain (7=1)r1c2-(1=7)r5c2-(7=4)r5c8-(4=7)r3c8, r1c7<>7 |
btw probably dumb question, what does BBDB stand for? |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Apr 10, 2010 6:42 pm Post subject: |
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| peterj wrote: | | btw probably dumb question, what does BBDB stand for? |
Not dumb for a relatively new person to my puzzles.
BBDB: Bend But Don't Break
I believe it was Ted that coined this phrase after working his way through one puzzle with many steps. Sometime later, I started including BBDB in the title to warn that my solver didn't encounter a solution shorter than five steps. Of course, my solver's solution is based on trying to find easier steps first. It doesn't account for Marty slipping in a W-Wing to cut it to three steps. 
Regards, Danny |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Apr 10, 2010 7:59 pm Post subject: |
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Danny, thanks.
Good to play puzzles that dont fold on the first advanced play - but also dont require APE, ALS stuff that I for one, find too painful to spot with only the use of my soft organic computer.. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Apr 11, 2010 12:53 am Post subject: |
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XY-Wing (573) plus two pincer transports
Type 2 UR (47-3)
Multi-coloring (3)
Multi-coloring (7)
BUG+2 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Sun Apr 11, 2010 7:48 am Post subject: |
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Peter,
I probably have messed up on basics but when I was following your nice 4 stepper I couldn't make the 6 at r5c8 go away in order to set up your final xy chain which elminates the 7 at r1c7.
(I did see an xy just before that step that got rid of that 6; pincers at r5c1 and r1c8) |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sun Apr 11, 2010 8:37 am Post subject: |
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| Mogulmeister wrote: | Peter,
I probably have messed up on basics but when I was following your nice 4 stepper I couldn't make the 6 at r5c8 go away in order to set up your final xy chain which elminates the 7 at r1c7.
(I did see an xy just before that step that got rid of that 6; pincers at r5c1 and r1c8) |
Ran it through again, I had a few basic steps between the xy-wing and UR - including a hidden pair 35 in row 8. After the UR had a lot of singles and played the xy-chain when the puzzle was almost done. 6 was placed in row 8. I could post a grid at a stage if you want? |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Sun Apr 11, 2010 12:44 pm Post subject: |
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No that's fine - I'm with you now !  Neat colouring on 3s and extended pincers. |
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