How to Play

Goal: Shade cells so that no number appears more than once in any row or column among the unshaded cells (Hitori logic).

• Click or tap a cell to shade it.
• Rule 1: No row or column can have repeating unshaded numbers.
• Rule 2: Shaded cells cannot be adjacent horizontally or vertically (diagonally is fine).
• Rule 3: All unshaded cells must be connected into a single continuous area.

Goal: Reveal the hidden pixel art image by using the number clues to determine which cells to shade.

• Each number in the grid indicates exactly how many squares within its immediate 3x3 area (the square itself plus its up to 8 neighbors) must be shaded.
• For clues on the edges or corners, the area is simply truncated to only include cells within the grid.
• Pro Tip: Marking empty spaces with an 'X' is just as important as shading blocks! Start by looking for '0' clues and marking all their surrounding cells with an 'X'.
• Never Guess: Every puzzle can be solved using 100% pure logic. A single guess can cause a chain reaction of errors!

Goal: Fill the grid so every row and column contains unique numbers, obeying the greater-than (>) and less-than (<) signs between cells.

• For a 5x5 grid, use numbers 1 to 5 exactly once per row and column.
• The inequality symbols act as clues: if a cell has a > sign pointing to its neighbor, its value must be larger.
• Use logic to deduce the only possible number for each cell.

Goal: Fill the grid with numbers such that no number repeats in any row or column, and the numbers within outlined blocks (cages) equal the target number using the specified operation.

• For a 4x4 grid, use numbers 1-4. For a 5x5, use 1-5, etc.
• Each "cage" has a target number and an operation (e.g., "12*").
• The numbers inside the cage must multiply, add, subtract, or divide to reach the target.
• Numbers can repeat inside a cage, as long as they aren't in the same row or column.

Goal: Fill the 9x9 grid with numbers 1 through 9.

• Every row must contain the numbers 1-9 exactly once.
• Every column must contain the numbers 1-9 exactly once.
• Every 3x3 block must contain the numbers 1-9 exactly once.
• Use pencil marks (notes) to keep track of possible numbers for a cell.

Goal: Slide and merge identical tiles to reach the 2048 tile.

• Use arrow keys or swipe to move all tiles in a direction.
• When two tiles with the same number touch, they merge into one tile with double the value (e.g., 2 + 2 = 4).
• Every turn, a new tile (2 or 4) appears on the board.
• The game is over when the board fills up and no more moves are possible.

Goal: Combine 4 numbers using basic arithmetic to equal exactly 24.

• You must use all 4 numbers exactly once.
• You can use addition (+), subtraction (-), multiplication (*), and division (/).
• Select two numbers and an operator to combine them into a new number, until you reach 24.

Goal: Find the pattern and guess the next numbers in the sequence.

• You will see a sequence of numbers that follow a specific mathematical rule (e.g., +2, *3, Fibonacci).
• Deduce the rule and enter the next number.

Goal: Fill in the missing numbers to make the equation correct.

• You are given an equation with several blank squares.
• Select a blank square, then type or tap a number to fill it.
• The equation must be mathematically valid using standard order of operations.

Goal: Guess the hidden equation in six tries.

• Each guess must be a mathematically valid equation (e.g., 12+3=15).
• Numbers and operators (+, -, *, /) are used.
• Standard order of operations (PEMDAS/BODMAS) applies.