![]() ![]() the length of a 1-3-6 series is 3.)įirst seen odd/even Sudoku: If odd, the first odd number in the corresponding direction or, if even, the first even number. MaxAscending Sudoku: The length of the longest series of ascending digits in the corresponding direction. Higher skyscrapers block the view of lower ones, size being given by the digit. Skyscraper Sudoku: The number of visible skyscrapers from that side. In many cases Killer Sudoku is much easier and more fun to play than its fellow puzzle the classic Sudoku. Next-to-6 Sum Sudoku: The sum of all direct neighbours of the digit 6 in the row or column. If you want to enter a pencil mark, click/touch the square you want to put in a pencil mark. If there is already a number in that square, it will be over-written. ![]() Click/touch the number you want to enter in to that cell. Outside-2 Sudoku: Must be placed in one of the first two cells in the corresponding direction. Above and below the puzzle is the number selection. Outside clues per variant show:ĭifference Sudoku: The difference of the first two digits in the corresponding direction. The free 16x16 sudoku puzzles to play online are divided into 5 levels: easy, medium, difficult, expert and diabolical in order to continue your progress. Simple logic and basic knowledge of sudoku rules won’t cut it you as a player should know advanced sudoku solving techniques and understand how to apply them in practice. It’s an advanced level only for experienced sudoku solvers. Normal 6圆 sudoku rules apply to all sudokus, so each row, column and region must contain 1-6. What is Sudoku Evil Sudoku evil is a 9×9 grid sudoku puzzle with the highest possible level of difficulty. A circle is an outside clue for both adjacent puzzles. Killer Sudoku rules are quite simple and intuitive and do not require any special knowledge or skills. ![]() To solve a Killer Sudoku puzzle, players must use clue numbers and a set of basic rules which are. Combining elements of Sudoku and Kakuro, it is a written number game that is played on a 9 x 9 grid, with the simple objective of filling all of the puzzle’s cells with the numbers 1 to 9. This is one large puzzle, consisting of six different variants of 6圆 sudokus, all linked together by circles. Killer Sudoku is an extremely addictive logic puzzle. May not work on non sudoku grids or special constraints. Hotkeys Selection Select cells + Mouse click/drag Add or remove from current selection Move selection +, + Add to current selection + Select all cells + + Deselect all cells + Invert selection, Tool sensitive selection Number Entry Insert value, pencil mark, candidate or colour Insert value, pencil mark, candidate or colour Button Insert value, pencil mark, candidate or colour Change Tool, Next mode +, Previous mode "Digit" mode ( on German keyboard layout) "Corner" mode "Centre" mode "Colour" mode + Enter digit in "centre" mode + Enter digit in "corner" mode + + Enter digit in "colour" mode Undo / Redo + Undo last action + Redo last action if it was undo Check finished puzzle Button Press the check button to test basic sudoku rules. FREE PRINTABLE ULTIMATE KILLER SUDOKU - Richardson Puzzles and Games Click on the links below to download PDFs which are set to print on A4 paper. ![]()
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