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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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 Posted: Mon Jul 26, 2010 7:12 am Post subject: playr.co.uk... extreme... 7/26/10 |
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| Code: | . . .|1 . .|. 8 3
6 . .|. 3 7|2 . 5
. . .|. 8 .|. . .
-----+-----+-----
3 9 .|. . .|. 5 .
8 . 5|. . .|7 . 1
. 2 .|. . .|. 3 4
-----+-----+-----
. . .|. 6 .|. . .
1 . 7|5 2 .|. . 6
4 6 .|. . 1|. . . |
kite 6; r5c6 <> 6
xyz-wing {2,8,9}; r7c9 <> 2
ER 9; r3c6 <> 9
gets the grid to here.
| Code: |
+------------------+-----------------+----------------------+
| 259 7 249 | 1 45 24569 | 46 8 3 |
| 6 -8(1) 489 | 49 3 7 | 2 49(1) 5 |
| 259 135 2349 | 2469 8 2456 | 146 14679 79 |
+------------------+-----------------+----------------------+
| 3 9 16 | 7 14 246 | 68 5 28 |
| 8 4 5 | 236 9 23 | 7 26 1 |
| 7 2 16 | 68 15 568 | 9 3 4 |
+------------------+-----------------+----------------------+
| 259 358 2389 | 3489 6 3489 | 48(13) 2479(1) 789 |
| 1 (38) 7 | 5 2 3489 | 48(3) 49 6 |
| 4 6 2389 | 389 7 1 | 5 29 289 |
+------------------+-----------------+----------------------+ |
(8=3)r8c2 - (3)r8c7 = (3-1)r7c7 = (1)r7c8 - (1)r2c8 = (1)r2c2; r2c2 <> 8
--------
| Code: | +----------------+--------------------+------------------+
| 259 7 249 | 1 5(4) 24569 | 46 8 3 |
| 6 1 8 | 9(4) 3 7 | 2 9(4) 5 |
| 259 35 2349 | 2469 8 2456 | 146 17 79 |
+----------------+--------------------+------------------+
| 3 9 16 | 7 1(4) (46) | 8 5 2 |
| 8 4 5 | 23 9 23 | 7 6 1 |
| 7 2 16 | (68) 15 568 | 9 3 4 |
+----------------+--------------------+------------------+
| 259 358 239 | 3489 6 3489 | 134 17 789 |
| 1 38 7 | 5 2 3489 | 34 (49) 6 |
| 4 6 39 | 39(8) 7 1 | 5 2 -9(8) |
+----------------+--------------------+------------------+ |
(9=4)r8c8 - (4)r2c8 = (4)r2c4 - (4)r1c5 = (4)r4c5 - (4=6)r4c6 - (6=8)r6c4 - (8)r9c4 = (8)r9c9; r9c9 <> 9
--------------
| Code: | +----------------+-------------------+---------------+
| 259 7 249 | 1 45 2456-9 | 46 8 3 |
| 6 1 8 | 4(9) 3 7 | 2 4(9) 5 |
| 259 35 2349 | 2469 8 2456 | 146 17 79 |
+----------------+-------------------+---------------+
| 3 9 16 | 7 14 46 | 8 5 2 |
| 8 4 5 | 23 9 23 | 7 6 1 |
| 7 2 16 | 68 15 568 | 9 3 4 |
+----------------+-------------------+---------------+
| 259 358 239 | 348-9 6 3489 | 134 17 79 |
| 1 38 7 | 5 2 348(9) | 34 4(9) 6 |
| 4 6 39 | 3-9 7 1 | 5 2 8 |
+----------------+-------------------+---------------+ |
skyscraper 9; r79c4 <> 9
--------------
| Code: | +--------------+----------------+-------------+
| 9 7 24 | 1 45 2456 | 46 8 3 |
| 6 1 8 | 49 3 7 | 2 49 5 |
| 25 35 234 | 469 8 246 | 146 17 79 |
+--------------+----------------+-------------+
| 3 9 16 | 7 14 (46) | 8 5 2 |
| 8 4 5 | 2 9 3 | 7 6 1 |
| 7 2 16 | (68) 15 568 | 9 3 4 |
+--------------+----------------+-------------+
| 25 358 23 | (48) 6 89-4 | 134 17 79 |
| 1 38 7 | 5 2 89-4 | 34 49 6 |
| 4 6 9 | 3 7 1 | 5 2 8 |
+--------------+----------------+-------------+ |
xy-wing 4,6,8; r78c6 <> 4 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Wed Jul 28, 2010 12:42 am Post subject: |
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Well, this puzzle gave me a real run around. However, I did have a "First" which was a swordfish with two separate fins.
1) ER6 with hinge box6 SLr1c67; r5c6<>6
2) AUR (79)r37c89 with x-wing 7 overlay; r7c8<>9
3) Almost skyscraper (9)r28c8 with fin (9)r2c3
If skyscraper is true: r3c6,r7c4<>9
If fin is true: (9)r2c3-r79c3=(9)r7c1; r7c4<>9
If fin is true: (9)r2c3-r2c8=(9)r3c89; r3c6<>9
4) How about a swordfish with two fins!! (No, I am not going to suggest another new name.)
| Code: | *--------------------------------------------------------------------*
| 259 7 #249 | 1 45 24569 | 46 8 3 |
| 6 18 *489 |*49 3 7 | 2 *149 5 |
| 259 135 *2349 |*2469 8 2456 | 146 *14679 79 |
|----------------------+----------------------+----------------------|
| 3 9 16 | 7 14 246 | 68 5 28 |
| 8 4 5 | 236 9 23 | 7 26 1 |
| 7 2 16 | 68 15 568 | 9 3 4 |
|----------------------+----------------------+----------------------|
| 259 358 2389 | 348 6 3489 | 1348 1247 2789 |
| 1 38 7 | 5 2 3489 | 348 #49 6 |
| 4 6 *2389 |*389 7 1 | 5 *29 289 |
*--------------------------------------------------------------------* |
swordfish (9)r239c348, marked *, with two fins: (9)r1c3 & r8c8, marked #.
If swordfish is true: r3c1<>9
If fin (9)r1c3 is true: (9)r1c3; r3c1<>9
If fin (9)r8c8 is true: (9)r8c8-r23c8=(9)r3c9; r3c1<>9
5) ANP(49=1)r28c8-r3c7=(1-3)r7c7=r8c7-(3=8)r8c2-(8=1)r2c2-(1)r2c8; r2c8<>1
6) Now the finned skyscraper in step 3 has lost its' fin so we get additional deletions.
skyscraper (9)r28c8; r1c6,r9c4<>9
7) xy-wing 38-9 extended vertex: (9=3)r9c3-(3=8)r9c4-(8=6)r6c4-(6=4)r4c6-r4c5=r1c5-(4=9)r2c4-r2c8=(9)r3c9; r9c9<>9
8) xy-wing -468 vertex (68)r6c4; r78c6<>4
Ted
[Edited to correct typo]
Last edited by tlanglet on Wed Jul 28, 2010 12:31 pm; edited 1 time in total |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Wed Jul 28, 2010 2:17 am Post subject: |
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| tlanglet wrote: | 4) How about a swordfish with two fins!! (No, I am not going to suggest another new name.)
| Code: | *--------------------------------------------------------------------*
| 259 7 #249 | 1 45 24569 | 46 8 3 |
| 6 18 *489 |*49 3 7 | 2 *149 5 |
| 259 135 *2349 |*2469 8 2456 | 146 *14679 79 |
|----------------------+----------------------+----------------------|
| 3 9 16 | 7 14 246 | 68 5 28 |
| 8 4 5 | 236 9 23 | 7 26 1 |
| 7 2 16 | 68 15 568 | 9 3 4 |
|----------------------+----------------------+----------------------|
| 259 358 2389 | 348 6 3489 | 1348 1247 2789 |
| 1 38 7 | 5 2 3489 | 348 #49 6 |
| 4 6 *2389 |*389 7 1 | 5 *29 289 |
*--------------------------------------------------------------------* |
swordfish (9)r239c348, marked *, with two fins: (9)r1c3 & r8c8, marked #.
If swordfish is true: r3c1<>9
If fin (9)r1c3 is true: (9)r1c3; r3c1<>9
If fin (9)r8c8 is true: (9)r8c8-r23c8=(9)r3c9; r3c1<>9
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Your elimination is correct, but you have the wrong Swordfish. Yours has an ugly third fin cell -- (9)r7c3.
To verify this, place a (#) in front of every cell in c348 with a <9>. Now for r239, change any (#) to (*).
BTW: Fish are allowed to have multiple fin cells w/o needing a special name.
FWIW to those who adhere to tarek's head post in The Ultimate Fish Guide: There are separate definitions for Fin Cell and Fin Sector. Tarek, and many others, use the contraction fins when they mean fin cell(s). |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Wed Jul 28, 2010 12:40 pm Post subject: |
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Danny,
I have no idea how I missed that 9 in r7c3. It is so obvious that it denies explanation 
In this case, the extra fin does not make the deletion r3c1<>9, but in hindsight I realize the step is not needed to complete the puzzle.
Ted |
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