The Logical Brain
A beautiful collection of logic puzzle games. Free, offline, and completely in English.
Reveal a hidden image by filling cells based on sequences next to rows and columns. Drag to mark multiple cells at once.
Drag paths across a 3x3 grid of numbers and operators. Reach the target value exactly.
Place tents next to trees so that row and column counts match. Tents may not touch each other.
Fill irregular regions with numbers 1-5. Adjacent cells must never contain the same digit.
Fill the grid with zeros and ones. Equal counts per row/column, no three-in-a-row, and all rows unique.
Fill the grid with numbers. Ensure each row/column contains unique digits and satisfy greater-than and less-than signs.
Fill the white cells with digits 1-9. Every run adds up to the sum in the black cell before it, without repeating a digit.
Connect the dots into a single closed loop. A number says how many sides of that cell are part of the loop. No crossings or branches.
Connect islands with straight bridges so each island gets its shown number of bridges. All islands must be connected.
Fill the grid with digits without repeating one in a row or column. The digits in each outlined cage together give the outcome shown in its corner.
Divide the board into rectangular patches. Every patch holds exactly one clue, which sets the shape and the number of cells of the patch.
The traditional 9x9 number puzzle. Fill the grid so that each row, column, and 3x3 block contains the digits 1-9 exactly once.
Fill the 6×6 grid with numbers 1-6. Each row, column, and marked 2×3 block must contain unique digits.
An exciting variant where the two main diagonals from corner to corner must also contain unique digits 1-9.
A challenging variant with four extra highlighted 3x3 squares (windows) that must each also contain unique digits 1-9.
Forget the standard 3x3 squares! In Jigsaw Sudoku, the 9 regions are irregularly shaped pieces of 9 cells each.
Draw a single path that starts at 1, passes all numbers in order and fills every cell of the grid. Walls cannot be crossed.
Fill the board with suns and moons. Equal counts per row/column, no three-in-a-row, and every = and × sign satisfied.
Place one queen per row, column, and colored region without touching each other (not even diagonally).
Connect dots of the same color with a pipe. Pipes may not cross, and together they must fill the entire grid.
Crack the secret color code. After each guess you see how many pegs have the right color in the right place and how many only have the right color.
Combine 6 numbers with addition, subtraction, multiplication, and division to reach the target. Achieve it within 30 seconds!