Theme: Diamonds (for Chris Green)
Author/Opus: This is the 150th puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Classic Sudoku Rules. Also, some arrow shapes are in the grid; the sum of the digits along the path of each arrow must equal the digit in the circled cell. Some thermometer shapes are in the grid; digits must be strictly increasing from the round bulb to each flat end. Finally, some diamond shapes are in the grid; the labeled diamonds below the grid must be placed in some order onto the shapes in the grid. The labeled diamonds can be rotated but cannot be reflected.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 5:15, Master = 10:45, Expert = 21:30