Arithmetic Sequence

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    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
  • 2
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
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    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
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    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
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    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
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    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • x
    • 0
    • 1
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    • 5
    • 6
    • 7
    • 8
    • 9
    • x
  • 6
    • 0
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    • 9
    • x
  • Normal
  • Easy

[Rule]

Fill in the appropriate squares with one-digit numbers from 0 to 9 according to the rules below.

  1. Every row and every column must contain exactly three numbers. (i.e., there will always be squares in any row or column that do not contain a number.)
  2. The numbers in any row or column must be arranged in ascending order and in such a way that the difference between each number is equal.

(This puzzle rule is designed by Erich Friedman.)

[Operation]

  2. "Back" -> 1 step back, "Restart" -> Restart from the scratch, "Save" -> Save the current status, "Restore" -> Restore the saved data.