Master the art of inequality puzzles
Futoshiki is a logic puzzle where you fill a grid with numbers following inequality constraints. Each row and column must contain unique numbers from 1 to the grid size.
Tap any cell to select it, then tap a number to place it. The inequality signs between cells show which number must be larger. Use logic to deduce the correct placement!
Start with cells that have the most constraints. Look for chains of inequalities to determine number sequences. Use the notes feature to track possibilities!
In Futoshiki, you must fill the grid so that:
• Each row contains the numbers 1 to N (where N is the grid size) exactly once
• Each column contains the numbers 1 to N exactly once
• All inequality constraints between adjacent cells are satisfied
• The < symbol means the number on the left must be smaller than the number on the right
Toggle notes mode by tapping the pencil icon. In notes mode, you can mark multiple possible numbers in a cell. This helps you keep track of possibilities as you work through the logic. Tap the pencil again to return to normal mode.
• Easy (4x4): Great for beginners, fewer cells and constraints
• Medium (5x5): More challenging with additional inequalities
• Hard (6x6): Complex puzzles requiring advanced logic!
Yes! Use the undo button to reverse your last move. You can undo multiple moves to backtrack if you've made an error. There's also a clear button to reset the entire puzzle if you want to start fresh.
Your score is based on:
• Time taken to complete the puzzle
• Number of mistakes made
• Difficulty level
Complete puzzles quickly with no errors for the highest scores!
Yes! Try these strategies:
• Look for cells with maximum constraints (e.g., 1 must be less than all neighbors)
• Follow chains of inequalities to determine sequences
• Use elimination: if a number must go in a specific cell, remove it from notes in that row/column
• Check for forced placements where only one number can satisfy all constraints