200e200w's Weekly Extreme #2

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200e200w's Weekly Extreme #2

Postby 200e200w » Sat Feb 17, 2018 11:42 am

Code: Select all
1 . .|. . 2|3 . .
. 4 .|. 1 .|. 5 .
. . 6|7 . .|. . 2
-----+-----+-----
. . 8|. 2 .|. . .
. . .|3 . 9|. . .
. . .|. 6 .|4 . .
-----+-----+-----
9 . .|. . 1|7 . .
. 5 .|. 7 .|. 8 .
. . 3|4 . .|. . 6

200e200w
200e200w
 
Posts: 208
Joined: 20 January 2018

Re: 200e200w's Weekly Extreme #2

Postby SpAce » Thu Mar 08, 2018 9:05 pm

Not difficult but took a bit of grinding:

1. AIC-Loop (Grouped): -19 r8c9, -2 r568c3, -78 r2c1, -3 r3c6
2. AIC (ANS): -4 r8c3
3. AIC (AHS): -4 r7c9
4. AIC: -4 r1c8
5. X-Chain: -4 r3c6
6. AIC-Loop: -589 r3c5
7. AIC: -9 r9c78, r8c4
8. X-Wing: -8 r3c27, r9c2
9. Kite: -8 r2c4
10. AIC: -7 r1c9
11. ER: -9 r6c8
12. "Extended-AIC": -9 r1c2, -8 r1c5
13. XY-Chain: -8 r5c7
14. AIC: -2 r5c7, r7c8
15. W-Wing: -5 r5c5; stte

Hodoku and SudokuWiki both used 18 moves (on default settings), so my p&p solving beat them only barely (by 3 or 2 moves, depending on if my step 12 is accepted as one step or not).

PS. I'm too lazy to type the chains (written on paper) unless someone's actually interested.
Code: Select all
   *             |    |               |    |    *
        *        |=()=|    /  _  \    |=()=|               *
            *    |    |   |-=( )=-|   |    |      *
     *                     \  ¯  /                   *   
SpAce
 
Posts: 680
Joined: 22 May 2017


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