Sin City is a nickname that may be applied to an urban area (a city or part of) that caters to various vices. These vices may be legal (depending on area) or illegal activities which are tolerated.
LAS VEGAS (KLAS) Locals hate the title, but it's stuck for years and years Sin City. What most don't know is the history behind Las Vegas' unshakable nickname. To many, especially tourists and outsiders, the reference is obvious.
A common strategy for starting games is to randomly click until you get a big opening with lots of numbers. If you flag all of the mines touching a number, chording on the number opens the remaining squares. Chording is when you press both mouse buttons at the same time. This can save you a lot of work!
With your cursor inside the minesweeper window type "XYZZY" then press Shift-Enter and Enter. A white dot should appear in the upper-left corner of the screen. If it turns black, your cursor is resting on a mine.