Objective
Fill the grid so each of the puzzle's five digits appears exactly once in every row and every column, and follow the rule symbols between the grid cells.
1
3
5
2
4
How to Play
Entering Numbers
Tap a cell to select it and use the number pad to modify it. Normal mode is for final answers, Candidate mode is for making "pencil marks" while you work through possibilities.
1
4
2
3
5
1
2
4
5
Rules In This Puzzle
Greater rule
The arrow points from the larger number to the smaller number.
4
2
One Greater rule
The dotted arrow points from the larger number to a number that is exactly 1 smaller.
3
2
Greater Greater rule
The double arrow means ALL cells after it are smaller.
5
2
4
1
Delta rule
The number of dots is equal to the difference between the numbers.
4
2
Odd rule
Both numbers are are odd.
5
3
Even rule
Both numbers are even.
4
2
Odd/even rule
One number is odd and the other is even.
3
4
Double rule
One number is exactly twice the other.
2
4