http://www.personal.psu.edu/users/w/x/wxk116/roma/latruncu.html
It's a game that plays like a combination of chess and checkers (Assuming all your pieces were Rooks). The nice thing is, it's a simply crafted game that anyone can make and play in a single afternoon. I made my board out of an old piece of Poplar panneling and drew the grid using a straight-edge and Sharpee marker. For pieces I used the glass marbles commonly found in flowershops. The only piece that has to be specially made is the "Duke" which really can be anything that isn't one of the marble "Mercenaries".
Good lord! I tried this game last night with a friend and I can tell you that this game doesn't end until one person is COMPLETELY defeated. I mean thouroughly stomped down to the last man! I led the whole game, dominating my opponent only to have him defeat me using 3 pieces in the end. Definately a thinking game, this one.
Today I'm going to work on another variant that uses an 8x8 board and no kings....