### Use of Xs and Os for puzzles with 4 colors

Threads [ Previous | Next ]
 Kylie Harman Posts: 39 Join Date: 2/5/04 Use of Xs and Os for puzzles with 4 colors Answer 5/14/07 7:15 AM The strategy for solving 3-color puzzles has been discussed in this forum quite a bit, but I haven't seen strategies for puzzles with 4 or more colors. I've also read some posts about not solving colored puzzles because of the complexity of the logic.When I am solving a 4-color puzzle, I use the Xs and Os with colors in the squares to allow for additional options. Here is how I indicate each possibility:No marks (default unknown squares): Can be any colorX with a color: Can be any color except the one shownO with a color: Can only be that color or blankColor/blank with no X/O: Known squareThis covers all possibilities for what is known about a square's coloring in a 4-color puzzle. It can be a little difficult to change from X to O, but I haven't seen puzzles where it is necessary to do that repeatedly.You can use a similar notation system for puzzles with more than 4 colors, but it won't cover every possibility. With the addition of the capability to use X and O in the same square it's possible to cover all possibilities for a 5-color puzzle, but the notations become more complicated as the number of possibilities increases. How do you all solve these puzzles? 0 (0 Votes)
 Dawn . Posts: 61 Join Date: 11/11/06 Re: Use of Xs and Os for puzzles with 4 colors Answer 5/15/07 1:02 AM as a reply to Kylie Harman. HiWell to be honest with some amount of brain and eye strain - :scratch: I have been using this site for 6 months now and am in 2,182 position in points solving, however I have only just discovered XXX & ooo s. :oops: When i arrived on the site I didn't bother to read the 'how to' as i already new how from doing them in books. I recently saw on the forum people talking about XX & ooos so went to the manual and found how.I was doing an 'andreasss' puzzle and gave them a go and they were definately a great help so now i will try your method too - very useful - thank you. Freespirit 0 (0 Votes)
 Kim Eecloo Posts: 2 Join Date: 8/7/05 Re: Use of Xs and Os for puzzles with 4 colors Answer 6/23/07 12:28 PM as a reply to Kylie Harman. ^^ no shame in that... I've been here for a year (well then I signed up) and I found out...today, tss shame on me 0 (0 Votes)
 Julie Posts: 11 Join Date: 12/20/05 Re: Use of Xs and Os for puzzles with 4 colors Answer 11/13/07 9:38 PM as a reply to Kylie Harman. I just discovered the x's and o's as well but I can't seem to get them to work. Do they only work with puzzles with two colors? I tried the shift left click and it didn't work. I am not using the applet.I've gotten pretty good at solving puzzles however beyond 6 million points is too difficult for me. Any suggestions? 0 (0 Votes)