Sequences game

I made a new game for by website at, you can play [here].

In the game you have to say what is missing from the sequence presented to you.

I will be grateful for any suggestions for sequences I can add.


Using GSAS and EXPGUI in debian

EXPGUI is a graphical interface for the GSAS software, allowing structural refinement using the Reitveld technique.

EXPGUI/GSAS can be downloaded in binary form from

You need to install tcl/tk and also blt all of which can be found in debian package repositories. (Or whatever for your system!)

in debian:
apt-get tk8.4 blt

tcl/tk is the scripting language used to write EXPGUI.
failing to install blt will result in the error “Error — Unable to load the BLT package; cannot run liveplot”.

Introducing Crystallographic Hangman

Introducing the great new game Crystallographic Hangman.

Sodium Chloride Unit Cell
Picture courtesy of Wikipedia