Pyramid by Palmer Mebane [bonus]

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Pyramid by Palmer Mebane

Theme: Good Odds

Author/Opus: This is the 49th puzzle from our contributing puzzlemaster Palmer Mebane.

Rules: Place a digit from 1 to 9 into each empty cell so that, for each row above the bottom row, every digit is the sum or difference of the two digits immediately below it. Rows marked in gray cannot have repeated digits; rows in white must have at least one repeated digit.

Also see this example:

Gaps Between Battleships Example by Thomas Snyder

Answer String: Enter the digits in the marked rows from left to right, separating each row with a comma.

Time Standards (highlight to view): Grandmaster = 7:00, Master = 15:00, Expert = 30:00

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