WARNING: What follows is a game only a Geek could love.

Today's design is a twist on the venerable game of chess, via quantum mechanics (See...I warned you).

If you're the kind of savvy reader that hangs out at the Chrome Cow, you doubtless are familiar with a certain theoretical feline belonging to one Erwin Schrödinger. This cat has the misfortune to be confined in a box with a deadly device that has a 50-50 chance of triggering with an hour. At the end of the hour, goes the thought experiment, the cat, sealed from observation inside the box, is neither dead or alive, but is in superposition, a combination of these possible states. The cat does not live or die until the box is opened by an observer, who through the act of observation collapses the possible dead/alive states of the cat into one or the other state.

So what's that got to do with Chess? What, indeed!

Enter Superpositional Chess (Super Chess? EigenChess? Quantum Chess? Schrödinger's Pawn?).

When a problem rears its head, Chrome Cow Labs leaps into action. I recently had some time-tracking chores to bring under control, and my first instinct was to write a series of calendar tools in Excel, driven by a couple of different Perpetual Calendar algorithms.

I geek, therefore I am.

Follow the link and download the spreadsheet. There is a monthly calendar, and two graphing implementations, in addition to several worksheets that expose the workings of the perpetual calendar.

For the monthly calendar and graphs, simply enter the Month and Year in the Title line, and the proper dates and days will auto-generate.

This workbook uses native Excel functions. There is no Visual Basic scripting driving the calendars.

Just remember, these calendars are only valid after 1752, probably.