Showing Death by Sudoku by Kaye Morgan

Maiden's Bay is a small, scenic town on the Oregon Coast where citizens get their number fix thanks to Liza Kelly-Sudoku Maven with the Oregon Daily. Her challenging puzzles sharpen the mind, and her deductive skills unravel even the most enigmatic clues.

Liza enters a Sudoku tournament in which her old friend and competitor turns up dead. Now, she must think outside the boxes to find a murderer.