Volume 16, Issue 3, March 2021

March is here at long last. 15 articles this month which should get us to April! [© Photo Ian Coristine/1000IslandsPhotoArt.com ]

Sudoku Puzzles #77 & #78

As a bonus, each month this year we will start with a Sudoku puzzle in progress, where it appears there are no more obvious or not-so-obvious clues.

Excursions in the Pacific Ocean, Part 2

In Part I, some readers thought there should be no problem with a flood tide that gets you "back to the launch ramp" when the wind drops to zero, but . . .