11/11/2022 0 Comments Easy online color sudoku![]() fc on 3's: c6 = c2 - e2 = e45 forbids d6=3Īgain, do not be disheartened by the forbidding chain language.Either one of e4, e5 being 3 prevents d6 from being 3Ĭonclude therefor that in every event, d6=3 is impossible and therefor forbidden.Since 3's in column e are limited to e2,e4,e5 - If e23 then 3's must exist within e45.If c2=3, then without even looking at the grid, e2 cannot be 3.Since 3's in column c are limited to c2,c6 - If c63 then c2=3.The logic is colorfully highlighted, but here is an explanation: This example is from the same puzzle as the first, after preforming the previously prescribedĮxclusion. Under one umbrella, Forbidding Chains and Forbidding Matrices.īlog pages currently under construction will discuss forbidding chains in some detail. The reason that I introduce forbidding chains at this time is quite simple:Īll the sudoku solving techniques, except perhaps those involving uniqueness of solution, fit Here is a brief key to terminology above: fc forbidding chain A = B A OR B, equivalent to A Union B A - B (not A) OR (not B), equivalent to A forbids B g8 shorthand for g8=number, in this case: g8=3 Using colors to deduce the possible eliminations. The term, coloring is derived from the common illustration of this technique In column g, the 3's are limited to two locations, g4 and g8. In this example, all the possible locations for 3's are highlighted by some sort of color. Many other techniques involving just one type of candidate can be placed under the tag, Xwings, Swordfish, Jellyfish, Finned Xwings, Finned Swordfish, Locked Candidates, and That is performed on just one type of candidate - or just one number, if you prefer. I also prefer to extend this idea to include any technique Amongst them are simple coloring, multi-coloring, colors. Its simplicity and engaging levels make it a great puzzle game even for complete beginners.Get out the Crayola! Try and stay within the lines.ĭespite the childish name, this technique is VERY powerful. In easy Killer Sudoku levels there will be a lot of cages like this, so look closely and this strategy will certainly pay off! Who can play Killer Sudoku?Įveryone! Easy Killer Sudoku is a great gateway puzzle for those of you unfamiliar with the number games but curious where to get started. For instance, if you see a two-cell cage equal to 10, with 6 already in place – be sure the other one is 4. The very first thing you should always do is to check the grid for the partially filled cages. Numbers inside a cage, when added together, should make a number shown in the upper left corner of that cage.Įasy Killer Sudoku strategy for beginners.Easy Killer Sudoku online levels offer more numbers already placed from the startĭon’t repeat the same number within a row, column, 3x3 block or “a cage”, indicated by a dotted line. Fill the grid with numbers from 1 to 9.Killer Sudoku rules are quite simple and intuitive and do not require any special knowledge or skills.This makes easy Killer Sudoku puzzles an incredible fit for beginners. In many cases Killer Sudoku is much easier and more fun to play than its fellow puzzle – the classic Sudoku. Even though the word “killer” in its name implies some sort of insane difficulty, don’t let it scare you off. Killer Sudoku is one of the hottest logic puzzles these days. ![]()
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