Rules: Divide the grid into pentominoes such that every cell in the grid is a part of exactly one pentomino. Pentominoes of the same shape (rotations and reflections of a pentomino count as the same shape) cannot touch each other along an edge, but they may touch diagonally. Given letters, if any, must be part of a pentomino with that letter’s shape. It is permissible for a pentomino to contain more than one given letter.
Rules: Shade some cells in the grid to form blocks of any shape.
1. Each block must contain exactly one number or a question mark.
2. A number indicates the size of the block that contains it.
3. Diagonally adjacent blocks form a chain. A chain cannot contain two identically shaped blocks, counting rotations and reflections as the same.
4. All blocks must be diagonally adjacent to at least one other block.
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Rules: Draw a single, non-intersecting loop, that has vertical and horizontal paths, and visits all of the given circles. If a cell orthogonally adjoining with a circle is visited, the loop must turn/go straight in that cell too (if it turns/ goes straight in the circle).
About: This puzzle type was invented by Anurag Sahay.
Rules: Draw a single, non-intersecting loop, that visits each of the outlined regions at least once. Each region is a galaxy where cells with no adjacent region borders or grid borders represent dense regions. The path of the loop can either make a 90-degree turn or go straight through the dense regions, while it must pass straight through the other cells.
Rules: Shade some cells on the board such that each region includes exactly two shaded blocks and they have the same shape, counting rotations and reflections as the same. Numbers cannot be shaded. A number indicates the size of the block that occupies the adjacent cell in the indicated direction. Shaded cells must not be adjacent across borders.
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Rules: Shade two circles in each bold outlined region, such that no two shaded cells share borders and all the unshaded cells form one orthogonally connected area. Then, draw a straight line path of shortest possible length starting in one shaded circle and ending in the other shaded circle in the same region. The paths cannot cross other circles or intersect other paths, but can pass through regions they didn't originate in. Cells from two different paths cannot be orthogonally adjacent..
Rules: Shade some cells on the board such that each region includes exactly two shaded blocks and they have the same shape, counting rotations and reflections as the same. Numbers cannot be shaded. A number indicates the size of the block that occupies the adjacent cell in the indicated direction. Shaded cells must not be adjacent across borders.