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Pat
Joined: 23 Feb 2010
Posts: 207
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 Posted: Mon Oct 24, 2011 4:03 pm Post subject: Advanced -- from daj95376 |
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| Code: |
. . . | 3 9 . | . . .
. 8 . | 5 . 2 | 4 . .
. . . | . 1 . | . . .
-------+-------+------
2 5 . | . . 8 | . 1 .
9 . 3 | . . 1 | . 2 .
. 7 . | 2 4 . | 3 . .
-------+-------+------
. 2 . | . . 9 | 5 . .
. . . | 4 2 . | . . 9
. . . | . . . | . 3 2
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Oct 24, 2011 7:45 pm Post subject: |
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Fun puzzle.
Fin transport from r3c1 to r1c6; r9c6<>6
XY-Wing (576); r5c4<>6
Finned X-Wing (6); r56c9<>6 |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Mon Oct 24, 2011 8:29 pm Post subject: |
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| Code: | *-----------------------------------------------------------*
| 4567 46 4567 | 3 9 467 | 2 8 1 |
| 1 8 9 | 5 67 2 | 4 67 3 |
| 467 3 2 | 8 1 467 | 9 5 67 |
|-------------------+-------------------+-------------------|
| 2 5 46 | 9 3 8 | 67 1 467 |
| 9 46 3 | 7-6 57-6 1 |a68 2 b4568 |
| 8 7 1 | 2 4 g56 | 3 9 5-6 |
|-------------------+-------------------+-------------------|
| 3 2 678 | 1 d678 9 | 5 4 c678 |
| 567 1 5678 | 4 2 3 | 678 67 9 |
| 467 9 4678 | 67 e5678 f567 | 1 3 2 |
*-----------------------------------------------------------*
(6=8)r5c7-(8)r5c9=(8)r7c9-(8)r7c5=(8-5)r9c5=(5)r9c6-(5=6)r6c6 => r5c45,r6c9<>6
Does it |
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SudoQ
Joined: 02 Aug 2011
Posts: 127
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| Posted: Mon Oct 24, 2011 10:21 pm Post subject: |
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| arkietech wrote: | (6=8)r5c7-(8)r5c9=(8)r7c9-(8)r7c5=(8-5)r9c5=(5)r9c6-(5=6)r6c6 => r5c45,r6c9<>6
Does it |
It may be even easier to show that r5c9<>5!?
/SudoQ |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Mon Oct 24, 2011 11:18 pm Post subject: |
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| SudoQ wrote: | It may be even easier to show that r5c9<>5!?
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You are right! | Code: | *-----------------------------------------------------------*
| 4567 46 4567 | 3 9 467 | 2 8 1 |
| 1 8 9 | 5 67 2 | 4 67 3 |
| 467 3 2 | 8 1 467 | 9 5 67 |
|-------------------+-------------------+-------------------|
| 2 5 46 | 9 3 8 | 67 1 467 |
| 9 46 3 | 67 a567 1 | 68 2 e468-5 |
| 8 7 1 | 2 4 6-5 | 3 9 f56 |
|-------------------+-------------------+-------------------|
| 3 2 678 | 1 c678 9 | 5 4 d678 |
| 567 1 5678 | 4 2 3 | 678 67 9 |
| 467 9 4678 | 67 b5678 567 | 1 3 2 |
*-----------------------------------------------------------*
(5)r5c5=(5-8)r9c5=(8)r7c5-(8)r7c9=(8-5)r5c9=(5)r6c9 => r5c9,r6c6<>5
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Pat
Joined: 23 Feb 2010
Posts: 207
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| Posted: Tue Oct 25, 2011 11:16 am Post subject: |
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| Quote: | | a puzzle he sent me once |
i've checked my SuDoku archive -- daj95376 sent me this puzzle on 2010.May.12
we were discussing (un-finned) complex fish (Franken/Mutant) -- which are rare -- and he produced this puzzle to illustrate such a fish !!
so, look for an (un-finned) Franken Swordfish---
| spoiler wrote: | path found by daj95376's software --
·:·
(6) r136\c69b1
--> (6) b9\r8
--> (6) r2478\c3578
·:· |
...39.2811895.24.3.3281.95.25.938.1.9.3..1.2.87124.39.32.1.954..1.423..9.9....132
[ play ]
| Code: |
. . . | 3 9 . | 2 8 1
1 8 9 | 5 . 2 | 4 . 3
. 3 2 | 8 1 . | 9 5 .
-------+-------+------
2 5 . | 9 3 8 | . 1 .
9 . 3 | . . 1 | . 2 .
8 7 1 | 2 4 . | 3 9 .
-------+-------+------
3 2 . | 1 . 9 | 5 4 .
. 1 . | 4 2 3 | . . 9
. 9 . | . . . | 1 3 2
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