How to Solve Hoshi Puzzles
Fill the grid with the numbers 1-9 so that there are no duplicates in any large triangle region or any of the three possible rows for each cell. Rows are considered to cross the gap.
How to Solve Ichimaga Puzzles
Connect all the circles by darkening lines on the grid. Numbers indicate how many lines are connected. Lines may make no more than one right-angle turn between circles.
How to Solve Kin-Kon-Kan Puzzles
Place a diagonal mirror in one cell of each region. Matching letter-number combinations outside the grid indicate the start and end of beams that reflect off a given number of mirrors.
How to Solve Lighthouse Battleships Puzzles
Use number clues in a series of lighthouses to locate a given fleet of battleships. Ships may not touch each other or any lighthouses in any direction.
How to Solve Lighthouse Puzzles
Find a hidden fleet of single-cell boats. Lighthouses reveal all boats in their row and column. Boats may not be adjacent to other boats or lighthouses in any direction.
How to Solve LITS Puzzles
Place one tetromino in each region such that all of them are orthogonally contiguous, no tetrominoes of the same type are adjacent, and no 2×2 area of cells is covered.
How to Solve Logic Grid Puzzles
Using a list of clue sentences and your reading comprehension, find all matching sets of attributes in the grid.
How to Solve Marupeke Puzzles
Play Tic-Tac-Toe to a draw against yourself! Given a few starting placements, fill in the grid with Xs and Os such that there are never 3 in a row in any horizontal, vertical, or diagonal direction.
How to Solve Masyu Puzzles
Create a single closed loop which passes through all the circles, but not necessarily all the cells, without crossing itself or branching. Black and white circles have different rules about how the line of the loop passes through them.
How to Solve Math Ladder Puzzles
Change the top row of numbers into the bottom row of numbers with a series of addition and subtraction operations in each column. Each operation will always result in a single digit.