FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in          Games  Calendar Log in to check your private messages    Hard puzzles, chains are not required. Rarely, ALS is. Goto page Previous  1, 2, 3, 4 ... 36, 37, 38  Next          Sudoku Programmers Forum Index -> Puzzles View previous topic :: View next topic   Author Message wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Fri Jul 06, 2007 9:48 am    Post subject: Not big on the fishies. <sigh> Code: . . .|7 . 3|. . . 7 3 .|5 . 9|. 4 1 . 6 .|. 4 .|. 3 . -----+-----+----- . 5 6|1 . 4|8 7 . . . 7|. . .|3 . . 3 . .|. . .|. . 5 -----+-----+----- . . .|. . .|. . . . 4 .|6 . 7|. 5 . 6 1 .|. 2 .|. 9 3 Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Sat Jul 07, 2007 2:06 pm    Post subject: Fins, some on big fish! Code: . . .|8 . 2|. . . . 7 .|1 9 4|. 3 . . . .|. . .|. . . -----+-----+----- . 2 .|6 . 8|. 9 . . 9 .|. . .|. 7 . 6 . 8|. . .|1 . 2 -----+-----+----- 7 4 .|. . .|. 8 5 . 8 1|. 4 .|7 2 . 9 . .|7 . 5|. . 1 Back to top Ruud Site Admin Joined: 17 Sep 2005 Posts: 708 : Location: Netherlands Items Posted: Sat Jul 07, 2007 10:31 pm    Post subject: And UR's _________________ Meet me at sudocue.net Back to top daj95376 Joined: 05 Feb 2006 Posts: 349 : Items Posted: Sun Jul 08, 2007 1:36 am    Post subject: wapati wrote: Fins, some on big fish! I found a Swordfish and two (concurrent) Unique Rectangles Type 1 that leave [r2c7]=5 ... and Singles complete the puzzle. No fins! Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Sun Jul 08, 2007 9:31 am    Post subject: daj95376 wrote: wapati wrote: Fins, some on big fish! I found a Swordfish and two (concurrent) Unique Rectangles Type 1 that leave [r2c7]=5 ... and Singles complete the puzzle. No fins! Good method! This one might involve Unique Loops, if that is the approach you chose! I'm not always sure, when I see a UL, whether it is a Bug-Lite? Code: 9 . .|3 . 5|. . 8 . . 8|. . .|2 . . 7 . .|. . .|. . 1 -----+-----+----- . . 3|7 . 4|9 . . . . .|5 . 6|. . . 5 . .|. . .|. . 7 -----+-----+----- . 6 .|. . .|. 1 . . . 2|1 . 9|5 . . . 4 .|. 3 .|. 8 . Back to top daj95376 Joined: 05 Feb 2006 Posts: 349 : Items Posted: Sun Jul 08, 2007 2:41 pm    Post subject: wapati, I thought you could use a break from generating puzzles to solving a few. AFAIK, these need more than finned fish to solve some of the single-digit patterns. Enjoy! Code: ....67.4..7..3..8.1..8......41..982..893.547..674..31......3..8.1..9..3..3.14.... #017 5.7.86...63.4..7.5..43.....27........532.497........32.....23..7.2..3.59...75.6.1 #021 .9..26.5....1....66...53.7.1....9...82.375.19...6....8.1.79...59....4....3.56..9. #022 BTW: Rudd solved your previous puzzle first and spotted the URs. All I really added of value was pointing out that they were concurrent and overlapping. Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Mon Jul 09, 2007 9:01 pm    Post subject: daj95376 wrote: wapati, I thought you could use a break from generating puzzles to solving a few. AFAIK, these need more than finned fish to solve some of the single-digit patterns. Enjoy! Code: ....67.4..7..3..8.1..8......41..982..893.547..674..31......3..8.1..9..3..3.14.... #017 5.7.86...63.4..7.5..43.....27........532.497........32.....23..7.2..3.59...75.6.1 #021 .9..26.5....1....66...53.7.1....9...82.375.19...6....8.1.79...59....4....3.56..9. #022 I solve puzzles every day, but I welcome some challenges, thanks! The first and third I saw no way to avoid chains. The second I solved as follows: Code: Two String Kite on nines. .------------------.-------------------.------------------. | 5     129   7    | 19     8     6    | 124   149   3    | | 6     3     189  | 4      2     19   | 7     189   5    | | 189   1289  4    | 3      7     5    | 128   1689  68   | :------------------+-------------------+------------------: | 2     7     1689 | 15689  3     189  | 158   168   4    | | 18    5     3    | 2      16    4    | 9     7     68   | | 4     189   168-9| 15689 #169   7    | 158   3     2    | :------------------+------------------+------------------: | 189   1689  5    | 1689  #1469  2    | 3     48    7    | | 7     168   2    | 168    146   3    | 48    5     9    | | 3     4    *89   | 7      5    *89   | 6     2     1    | '------------------'-------------------'------------------' Vertical sashimi sword on ones. # sign marks the fins. Fins are true or sword is true. .------------------.------------------.------------------. | 5     129   7    | 19    8     6    |#124   149   3    | | 6     3    *189  | 4     2    *19   | 7     89-1  5    | | 189   1289  4    | 3     7     5    |#128   1689  68   | :------------------+------------------+------------------: | 2     7    *1689 | 15689 3    *189  |*158   168   4    | | 18    5     3    | 2     16    4    | 9     7     68   | | 4     189  *168  | 15689 169   7    |*158   3     2    | :------------------+------------------+------------------: | 189   1689  5    | 1689  1469  2    | 3     48    7    | | 7     168   2    | 168   146   3    | 48    5     9    | | 3     4     89   | 7     5     89   | 6     2     1    | '------------------'------------------'------------------' This one is hard to see.  It is a vertical finned sword on nines. If the fin is true then r2c3 is not 9.  If the sword is true then r3c12 claim and point. r2c3 is not 9. .------------------.-------------------.------------------. | 5    #129   7    | 19     8     6    | 124   149   3    | | 6     3     18-9 | 4      2     19   | 7     89    5    | |*189  *1289  4    | 3      7     5    | 128   1689  68   | :------------------+-------------------+------------------: | 2     7     1689 | 15689  3     189  | 158   168   4    | | 18    5     3    | 2      16    4    | 9     7     68   | | 4    *189   168  | 15689 *169   7    | 158   3     2    | :------------------+-------------------+------------------: |*189  *1689  5    | 1689  *1469  2    | 3     48    7    | | 7     168   2    | 168    146   3    | 48    5     9    | | 3     4     89   | 7      5     89   | 6     2     1    | '------------------'-------------------'------------------' An xy wing wraps it up. .------------------.------------------.------------------. | 5     129   7    | 19    8     6    | 124   149   3    | | 6     3    *18   | 4     2    *19   | 7     89    5    | | 189   1289  4    | 3     7     5    | 128   1689  68   | :------------------+------------------+------------------: | 2     7     1689 | 15689 3     189  | 158   168   4    | | 18    5     3    | 2     16    4    | 9     7     68   | | 4     189   168  | 15689 169   7    | 158   3     2    | :------------------+------------------+------------------: | 189   1689  5    | 1689  1469  2    | 3     48    7    | | 7     168   2    | 168   146   3    | 48    5     9    | | 3     4    *89   | 7     5     8-9  | 6     2     1    | '------------------'------------------'------------------' Quote: BTW: Rudd solved your previous puzzle first and spotted the URs. All I really added of value was pointing out that they were concurrent and overlapping. He may have had your very quick solution, or he may have noted that fins and URs are required for a pattern solution. For sure he could solve it. Back to top daj95376 Joined: 05 Feb 2006 Posts: 349 : Items Posted: Mon Jul 09, 2007 10:07 pm    Post subject: Nice going on the second puzzle! An alternate approach to your vertical finned Swordfish on <9> that uses 'claim and point'. (My Franken Fish abilities stink, so this could be wrong.) Code: # Franken Swordfish r49b2\c346  *--------------------------------------------------------------------*  | 5      129    7      |*19     8      6      | 124    149    3      |  | 6      3      18-9   | 4      2     *19     | 7      89     5      |  | 189    1289   4      | 3      7      5      | 128    1689   68     |  |----------------------+----------------------+----------------------|  | 2      7     *1689   |*15689  3     *189    | 158    168    4      |  | 18     5      3      | 2      16     4      | 9      7      68     |  | 4      189    168    | 1568-9 169    7      | 158    3      2      |  |----------------------+----------------------+----------------------|  | 189    1689   5      | 168-9  1469   2      | 3      48     7      |  | 7      168    2      | 168    146    3      | 48     5      9      |  | 3      4     *89     | 7      5     *89     | 6      2      1      |  *--------------------------------------------------------------------* Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Mon Jul 09, 2007 10:42 pm    Post subject: A swordfish, and at least four other methods, is how I see this one! Code: 1 . 2|. . .|7 . 8 . . .|. 3 .|. . . 7 9 .|. . .|. 6 2 -----+-----+----- . . .|8 . 3|. . . . 7 .|. 2 .|. 3 . 8 . .|4 . 6|. . 5 -----+-----+----- . 2 .|. . .|. 7 . . . .|5 . 2|. . . . 6 .|. 4 .|. 8 . Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Wed Jul 11, 2007 3:42 am    Post subject: Unique! Code: . 4 .|8 . 6|. 5 . . 1 .|. . .|. 9 . 7 . .|. 3 .|. . 6 -----+-----+----- . . 2|. . .|5 . . . . .|1 . 9|. . . . 6 .|. . .|. 2 . -----+-----+----- 5 9 .|2 . 3|. 1 4 . . .|. . .|. . . . . 1|. 5 .|7 . . Back to top arkietech Joined: 09 Mar 2007 Posts: 22 : Items Posted: Wed Jul 11, 2007 1:01 pm    Post subject: wapati said: Quote: Unique! Code:   . 4 .|8 . 6|. 5 . . 1 .|. . .|. 9 . 7 . .|. 3 .|. . 6 -----+-----+----- . . 2|. . .|5 . . . . .|1 . 9|. . . . 6 .|. . .|. 2 . -----+-----+----- 5 9 .|2 . 3|. 1 4 . . .|. . .|. . . . . 1|. 5 .|7 . .  Early ur that ends in big color. Dramatic! dan Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Thu Jul 12, 2007 9:20 am    Post subject: Finned swords is what I need for dinner. Code: . . 6|9 . 5|7 . . . . .|. . .|. . . . 1 .|. . .|. 6 . -----+-----+----- . . .|. 3 .|. . . 6 2 .|. . .|. 3 5 8 . .|6 . 1|. . 7 -----+-----+----- 1 . .|2 . 7|. . 6 . 8 .|. 4 .|. 1 . . . 4|. 1 .|2 . . Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Fri Jul 13, 2007 7:27 am    Post subject: There are many available patterns here. I think 4 is the least needed but getting the right 4 is hard when there are so many! At one point I saw a sashimi swordfish, finned x-wing and a sashimi jellyfish all on 2s and all doing different eliminations. The Jelly was the important one. Code: 4 . .|. . .|. . 3 . 3 8|. . .|7 6 . . 6 .|. . .|. 1 . -----+-----+----- . 1 .|8 4 6|. 5 . . 5 .|. . .|. 8 . . 4 .|. 3 .|. 7 . -----+-----+----- . . .|1 . 8|. . . . . 5|4 . 9|1 . . . . 1|. 7 .|6 . . Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Sat Jul 14, 2007 8:43 am    Post subject: No comment. Code: . 9 .|. 6 .|. 8 . . . 1|. . .|4 . . . . 3|. . .|5 . . -----+-----+----- . . 4|. 2 .|7 . . . . .|3 . 6|. . . . 5 .|. 1 .|. 2 . -----+-----+----- . 1 .|2 . 5|. 6 . 4 . .|. . .|. . 9 7 . .|. 3 .|. . 5 Back to top wapati Joined: 12 Jun 2007 Posts: 622 : Location: Canada Items Posted: Sun Jul 15, 2007 9:09 pm    Post subject: This one is somewhat easy, if you find the short path. There are MANY paths! Code: . 1 .|. 4 7|6 . . . . 9|. . .|. . 4 . . 8|. . .|. 9 . -----+-----+----- 7 . .|. . 2|. . . . . 6|7 3 5|4 . . . . .|1 . .|. . 5 -----+-----+----- . 3 .|. . .|9 . . 2 . .|. . .|1 . . . . 4|2 6 .|. 7 . 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