FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in          Games  Calendar Log in to check your private messages    top95 coloring examples          Sudoku Programmers Forum Index -> Solving sudoku View previous topic :: View next topic   Author Message Bob Hanson Joined: 05 Oct 2005 Posts: 187 : Location: St. Olaf College Items Posted: Fri Nov 25, 2005 10:03 pm    Post subject: top95 coloring examples I've written up an interactive description of simple coloring (X-cycle) analysis in the context of the four top95 puzzles that can be solved using this method alone. See http://www.stolaf.edu/people/hansonr/sudoku/top95-analysis.htm Included here are: Code: #13 weak 3-blade fishy cycle eliminates r4c2#5:  r4c2#5       |        x......5*        .      |        .      |       -5------+--5*-               | /               |/               5               | weak 3-blade pentagon eliminates r5c6#5:  |          r5c6#5  5*.......x  |        .  |        .  |        .  |        5  |       /  |      / -5-----5*-  | weak 2-blade pentagon eliminates r4c2#7:   r4c2#7     |         x....7*      | .     |      |.      |      7       |      |       |      |       |      |       |      7*......7      |       | weak 2-blade fishy cycle eliminates r5c5#7:              |              7*      |       | .      |       |  .      7...........x r5c5#7      |       |      |       |      |       |      7*......7      |       | #25 strong 4-blade fishy cycle on 5 eliminates all with *:               -1----------1*-        |          |        |          |        1*...........1*        |          |/                   1                   | #53 strong 6-blade fishy cycle on 7 eliminates all with *:     |      |    -7*-----7-     |      |     |      |       |    -7------+-------7*-     |      |       |            |       |            |       |            |       |            |       7            |      /|            |     /            7*...7* strong 4-blade pentagon eliminates all with *:   |         -5--------5*-   |       /   |     |/   |     5        (more cycles exist in this example)   |     |   |     |   5*....5*   |     |   #71 weak 3-blade pentagon eliminates r4c3#7:                    -7*-------7-         .       /         .     |/         .     7*         .     |         .     |         x.....7  r4c3#7       | _________________ Bob Hanson Professor of Chemistry St. Olaf College Northfield, MN http://www.stolaf.edu/people/hansonr Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         Sudoku Programmers Forum Index -> Solving sudoku All times are GMT Page 1 of 1   Jump to: Select a forum Sudoku----------------Solving sudokuSetting sudokuProgramming sudokuThe mathematics of sudokuExotic sudoku Library----------------PuzzlesSoftwareSudoku elsewhere Not sudoku----------------Random thoughtsForum feedback  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum   Powered by phpBB © 2001, 2005 phpBB Group Igloo Theme Version 1.0 :: Created By: Andrew Charron