Rules Draw a single closed loop along cells edges, such that the loop does not cross itself and the clues in cells indicate how many of its four sides are segments of the loop. Example Here is a grid of Slitherlink and its solution. Solve the example online here. History of Slitherlink According to the […]
Rules Place some stars in the grid, no more than one by cell, such that the number of stars in each row, column and region equal the indicated number. Stars cannot share an edge or a corner. Example Here is an example of a Star Battle grid and its solution. Solve the example online here. […]
Rules Geradeweg rules: Draw a single, non-intersecting loops passing orthogonally by the center of some cells. The loop must pass by every numbered cell. The length of each segment passing through a numbered cell need to be the length of the clue. Hence, if the loop turns in the numbered clue, each branch needs to […]
Rules Divide the grid in region of size 1×2 or 1×3, the borders of some regions are already provided for you. The regions can either vertical or horizontal. Borders with black circle separates two regions of different size and different orientation. Borders with white circle separate two regions of same size and same orientation. Lastly, […]
Rules Shakashaka rules: In some empty cells, shade a right triangle occupying exactly half the cell. All unshaded area must be rectangular. A number in a cell indicates how many rectangles are in the up to four cells orthogonally adjacent to the clue. In other words, there are five possibilities for each empty cells: leaving […]
Rules Masyu rules: Draw a single, non-intersecting loops passing orthogonally by the center of some cells. The loop must pass by every circled cells. The loop must turn in all black circle, and must go straight in the cells just before and just after. The loop must go straight in all white circle and turn […]
Rules Fillomino rules: Divide the grid into regions, such that two regions sharing an edge do not have the same size. Numbers indicate the size of the region it is located in. Regions can contain none, one, or several given numbers. Example Here is an example of a Fillomino grid and its solution Solve online […]
Rules Doppelblock rules : shade exactly two cells in each row and each column. In the remaining cells, place an integer between 1 and X-2, where X is the number of cells in each row, such that each number appears exactly once in each row and each column. Number outside the grid indicate the sum […]