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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Wed Jul 14, 2010 8:47 am Post subject: Puzzle 10/07/14: BBDB Advanced |
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| Code: | +-----------------------+
| 8 2 . | 9 . . | . 6 . |
| 6 . . | . 7 8 | . . 1 |
| . . . | 6 2 . | . . 5 |
|-------+-------+-------|
| 2 . 8 | . 3 . | . . 6 |
| . 3 6 | 8 9 . | . 5 . |
| . 1 . | . . 7 | . . . |
|-------+-------+-------|
| . . . | . . . | 6 . 3 |
| 1 . . | . 8 . | . 2 . |
| . 9 2 | 7 . . | 5 . . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Jul 15, 2010 4:37 am Post subject: |
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| Quote: | ER (5)
W-Wing (45)
Type 4 UR (38)
Kite (5)
(At this point I passed up a Type 1 UR on 14 which may have ended it)
BUG+2
BUG+1 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Thu Jul 15, 2010 6:09 am Post subject: |
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Great Puzzle Danny
1. Start with a double elimination. Pincers <45> at r2c2 and r6c4 which toggle so 4 in one will create 5 in the other. Not a classic Remote Pair because r4c2 contains 457 but behaves like one nonetheless. R2c4<>45.
2.UR 38; r3c7<>38
3.Colouring on 5s; eliminates six of them
4.XY-Chain r28c3 r38c7; r2c8<> 9
Last edited by Mogulmeister on Sat Oct 09, 2021 9:19 am; edited 1 time in total |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Thu Jul 15, 2010 1:47 pm Post subject: |
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I think I may have taken the wildest ride so far with this puzzle. A couple of interesting moves and probably some steps not needed.
Type 4 UR 14 r79c58 provide several different deletions
1, x-wing 1 overlay; r7c58<>4
2. To prevent the DP, (7)r7c8=(5)r7c5-(5=4)r1c5-(4=7)r1c9; r3c8<>7
3. Transport (7)r7c8-r7c13=r8c3-r13c3=(7)r3c12 plus the (7)r1c9 results in r3c78<>7, or as an AIC:
(7=4)r1c9-(4=5)r1c5 - UR14[(5)r7c5=(7)r7c8]r79c58-r7c13=r8c3-r13c3=(7)r3c12; r3c78<>7
kite 4 with hinge box8; r1c7<>4
"Grounded" skyscraper 4 r1c59 plus transport (4)r9c5-r9c8=(4)r8c7; r4c7<>4
ER 5 with hinge box5 SL r24c2; r2c4<>5
AXY-wing 34-5 with vertex (34)r2c4, pincers (45)r1c5 & (35)r8c4 plus fin (4)r8c4
If xy-wing is true: r7c5<>5
If fin is true: (4)r8c4-(4=5)r6c4-r6c1=(5)r7c1; r7c5<>5
Kraken cell (457)r4c2
(4)r4c2; r6c13<>4
(5)r4c2-(5=4)r2c2-r2c4=(4)r6c4; r6c13<>4
(7)r4c2-(7=4)r5c1; r6c13<>4
Type 1 UR38 r36c67; r3c7<>38
Ted |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Jul 15, 2010 3:23 pm Post subject: |
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| Oh good!!! I'm glad to see that everyone had fun with this puzzle. I have more and I'll post them occassionally. |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Fri Jul 16, 2010 7:04 am Post subject: |
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My path was basically the same as Marty's...
Turbot Fish(5); r2c4<>5
Kite(5); r8c3<>5
These first two steps can be done 'in one' if you indulge in x-colouring... which I still occasionally tinker with.
Type 3 UR(38) pseudo-cell(479); r3c3<>479, r3c6<>4
Skyscraper(4); r4c78<>4
Type 1 UR(14); r7c8<>14 |
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