I have won an unofficial competition in the university back in the 1990s, we competed using something called PascalRobots. The game was played via rounds of 1v1

I have won an unofficial competition in the university back in the 1990s, we competed using something called PascalRobots. The game was played via rounds of 1v1 matches. My victory came thanks to a simple trick: I noticed that certain algorithms had good success against most algorithms, but were very vulnerable against few others, which, in turn, were very vulnerable to most other ones. Basically a rock-paper-scissors problem. So I did a very simple thing: I've programmed a robot that used first 50% of health using one algorithm, and then switched to another very different one. The second one was simply running along the edges semi-randomly and scanning and shooting backwards - i remember the rules were that every action like scanning took some time so you couldn't build a robot who'd pinpoint the exact location of the enemy in the allotted time, you'd waste too many cycles on that.