The tournament software is a web based and mobile optimized solution needed for our growing tournaments. After volunteering to run the pairings and scoring for local grade school chess club tournaments, we ran into multiple bottlenecks. We tried different open source softwares and none could support larger groups than 50 without delaying the tournaments timeline even with multiple scorekeepers. I designed a web based solution designed for mobile and tables that allows multiple scorekeepers to enter scores at the same time. The software allows for quick corrections by coaches and exception without halting the full tournament. The parents could also see their children’s scores win real time. We have ran multiple tournaments with 200+ students all of which ended on time or a head of schedule all paperless and without cables. All registration, scorekeeping and pairing were done on mobile devices or tablets. Other tournament software were limit in the pairing algorithm. The new system took into account grade, school, previously played opponents, and ELO ranking. All the weights can be adjusted on the fly as seen fit by the coaches. Once pairing are created, the students start finding their next table, often even before we announce a new round.