Talk:Killer sudoku

The text 'below' the sample solution was appearing to the right of it - I didn't know how to fix that properly so there's an unsightly line of <br>s in there instead. --Last Malthusian 00:32, 6 January 2006 (UTC)[reply]

Though there is a link at the bottom to my page of tips on solving these puzzles, I was displeased to see that an entire paragraph of that page was pasted, without a credit, into Wikipedia, with a few words changed to disguise its origins. I have now credited it to myself here--sorry to be the egotist, but if someone wants to write a NEW, ORIGINAL paragraph they are welcome to get rid of my self-quotation here. --ND 05:03, 13 January 2006 (UTC)[reply]

Per Ndorward's request, I wrote a new paragraph, and erased the direct quote. Nuj 06:47, 13 January 2006 (UTC)[reply]

THanks! A lot more space-efficient to boot.... Anyone want to take a crack at improving the rest of the page....? --ND 06:51, 13 January 2006 (UTC)[reply]

The other problem here is that the discussion of solving strategies is kind of useless: in particular, the omission of the "45-sum rule" leaves the solver without one of the basic tools needed to solve puzzles efficiently, & the lengthy chart of combinations is misleading: that is by far the worst, most inefficient & mind-numbing way of solving puzzles. The choice of puzzle for display/example here is unfortunate because it doesn't really lend itself to demonstrating the 45 rule, let alone others (udosuk's "subtraction combo" [a key technique for bypassing combination-crunching], J.-C. Godart's "overlap"). If someone wants to fix this page go ahead: I'm not in the mood to do it myself at the moment, given that I don't want to just paste in material I've already discussed at length on my own site. --ND 05:27, 13 January 2006 (UTC)[reply]

  • I've had a go at explaining the 45-rule. The trouble is that our sample puzzle doesn't given an immediate example of the traditional application, though it allows a more advanced application which I've included in the initial analysis. Plus I'm sure someone can explain it more clearly than I can. If I have time tonight I'll try creating a two-nonet example of the simple application. What would be best is if we had an easier sample puzzle to which we could apply all the simple techniques. --Malthusian (talk) 10:00, 13 January 2006 (UTC)[reply]