To view the instructions for each puzzle genre, you can click on the link in every puzzle (the one labeled with the puzzle genre’s name), you can browse them via the list of pages on the right, or you can go to the bottom of this page.
All puzzles here can be solved by having common sense and reading (and understanding) ability to read the rules, basic arithmetic (+, -, x, /), and ultimately, logic. If there are more requirements needed, I will tell you in the puzzle post.
In the instructions pages, I will use a notation for cells that are commonly used in puzzle solving. A cell is denoted by R##C**, where ## indicates its row number, counting that the topmost row is 1 and counting downward consecutively, and ** indicates its column number, counting that the leftmost column is 1 and counting rightward consecutively. For example, the bottom-right cell in a 10×10 puzzle is R10C10. The cell above it is R9C10, and the cell to the left of R10C10 is R10C9. Familiarize yourself with this notation to understand the instructions completely.
Difficulty of puzzles
In each puzzle, I will provide a rough difficulty of the puzzle. Most of them will be subjective, but for some guidelines…
Each difficulty is represented by ##-star, where ## is a positive multiple of 0.5, and does not exceed 10.0. The more stars a puzzle have, the harder the puzzle is. However, these stars are subject to change (though probably only about 0.5 until 1.0) for the first days since the publish date, depending on people’s reactions. (A person browsing through some old puzzles and comment on them might also affect the difficulty.)
0.5 – 2.0 (Beginner)
A puzzle with a difficulty between 0.5 and 2.0 stars is very simple. Usually it only uses the basic rules of the puzzle, with very few (or even no) intermediate techniques. Obviously no advanced techniques, no lots of steps of thinking ahead, etc. Suited for beginners or to introduce a puzzle genre.
2.5 – 4.0 (Intermediate)
A puzzle with a difficulty between 2.5 and 4.0 stars is a little easy and a little hard. Either it uses some intermediate techniques, or it has a difficult starting or ending point. Good for a person to practice in the respective puzzle genre.
4.5 – 6.0 (Advanced)
A puzzle with a difficulty between 4.5 and 6.0 stars is quite difficult. Just expect something unexpected or unusual to be applied in the puzzle. A person looking for some challenge or wishing to be a puzzle championship winner might find these puzzles interesting, and a good starting step for harder challenges.
6.5 – 8.0 (Expert)
A puzzle with a difficulty between 6.5 and 8.0 stars is difficult. It has some tricky and/or complicated methods. Usually has lots of intermediate techniques. Generally takes about 25-30 minutes for a 20×20 puzzle of this difficulty.
8.5 – 10.0 (Master)
A puzzle with a difficulty between 8.5 and 10.0 stars is extremely difficult, hellish, and to put it simply, insane. Perhaps appearing once every 100 puzzles, these puzzles will take at least twenty minutes to solve…if you are very experienced. Don’t tackle these puzzles without printing them, and don’t try these puzzles before you completed at least one expert puzzle.
Akari — Also known as Light Up, this puzzle requires all white cells to be illuminated by lights.
Block Puzzle — Divide the grid into regions containing the symbols listed below the grid.
Corral — Also known as Bag, a loop must be drawn to restrict the numbers’ sights.
Fillomino — These numbers are searching for a peaceful life, getting together with the same values exactly as their numbers stated.
Fillomino Connection — Some of the numbers from Fillomino are acquaintances, so they muts be together.
Hebi-Ichigo — Snakes in a grid. Determine the locations of the snake.
Hidato — Play a series of King’s moves around the grid.
Loop mix — A combination of four loop puzzles.
Mirror Akari — A variation of Akari, this puzzle introduces some mirrors for reflective actions.
No-Square Slitherlink — The usual Slitherlink, but no dot in the loop.
Number In Order — Let the numbers be consecutive for every series of cells.
Nurikabe — According to Japanese legends, a nurikabe is an invisible wall that hinders walkers, and must navigate around them. Also called Cross The Streams.
Nurikabe II — With some extra variation, all walkers are surely in a maze with a unique exit path without any loop existent in the grid.
Region Minesweeper — A hybrid of Star Battle and Minesweeper, locate the mines where some Star Battle rules apply.
Sheep and Wolves — Help the sheep avoid the wolves by fencing them (and not the other way around).
Shikaku — Partition the grid into rectangles so the area is the given. Remember your multiplication table.
Slitherlink — Also known as Fences, form a loop twisting around the numbers to satisfy all numbers.
Star Slitherlink— Now Slitherlink equipped with stars, ensure that these stars are within the loop.
Sudoku — The worldwide puzzle that should be known to those that have access to bookstores and/or internet.
Yajilin — Either the cell is black or the cell is visited by the loop. Those given cells are counting the black cells, hoping to be paid…