If you play too much Tetris, then you should check out the new subpage: The Tetrad Corner. It’s a collection of things I’ve made this week about the shapes used in tetris (’tetrads’, also called ’tetrominos’).

The original idea was that it would be cool to have a tetradic phone password. That is, your password makes a Tetris shape on the keypad. I was bored enough this week to actually write a little script for it, along with a PHP class for rotating the blocks, rendering them as a HTML table, and so on.

It turned out alright, but fearing that I had begun something as time-consuming as tetris itself, I banished it to a single-page sub-site. The source code is there if you want those HTML-tetrads on a webpage (I don’t!):

Now what I do want is a few tetris blocks for my desk, so I made up some nets to print out and cut up. Now I can make a small paper Tetris game! (PDF version here). Neat, huh?

Update: I built these shapes today. There were two tabs missing on the nets (fixed!), so I cheated by using sticky tape. Click to enlarge the badly-colourised image.