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The Oklahoma Scholastic Chess Organization (OSCO) provides chess tournaments for K-12 students throughout Oklahoma. We are an all-volunteer 501 (c)(3) nonprofit. If you would like to volunteer, connect us with a potential tournament venue, or make a donation, contact us at

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September 16 at Moore High School

October 14 TULSA/EASTERN OK [location TBA]


OSCO champion's winning streak continues

May 31, 2023

When Naren Pullela won our 2023 state championship, it was part of a winning streak that still shows no sign of slowing down. He'd just come off an outstanding performance at the National High School Championships, where he tied for second in the U1900 and shot up 75 points (to 1775). A week later he won the OSCO state championship and moved into Class A (1844). He followed that with a double upset at the RRSO that put him at 1875. Pullela's climb continued last week, when he tied for second in his division at the Chicago Open. He returned to Oklahoma with a 1921 rating and a $2,000 prize.

Arya Roy Choudhury is among the nation's top K-1 players

May 14, 2023

First grader Arya Roy Choudhury became the youngest-ever player to ascend to our Premier section this year, and it looks like he isn't slowing down.  In his first-ever trip to K-6 Nationals, Arya scored an outstanding 6.0 out of 7, finishing in a tie for second in the 155-player K-1 Championship division!

Ratings don't mean a thing to OSCO players at the RRSO

May 13, 2023

Three OSCO players were on Oklahoma's team at this year's Red River Shootout, the annual team match between Oklahoma and Texas. Rated a combined 492 points lower than their Texas opponents, Naren Pullela, William Lin, and Max Barnes were long shots to score a single point.  But they beat the odds, and then some. Pullela (-142 points) scored 2-0 against his Texas opponent). Lin (-33 points) won both of his games, too. And in the biggest upset of the day, Barnes (-241 points) won his first game and drew his second. 

Chen, Pavithran continue to climb

April 24, 2023

After taking third place in the Middle School Championship  at State earlier this month, Angelique Chen continued her exceptional season with an impressive 5 out of 7 points in the 142-player U1400 section at Nationals. 

This year's OSCO K-5 champion, third grader Kiara Pavithran, finished at #15 out of 248 players in her division at Nationals. In only nine tournaments, Kiara has achieved an 1100+ rating and will compete in Premier next season.

Invitationals reps named at State

April 8, 2023

Each year OSCO selects four individuals to represent the state of Oklahoma in the Denker Barber, Rockefeller, and  Haring tournaments of champions, held during the US Open in late summer.  Premier section players earn points at each OSCO regular-season event and double points at the state championship. Our 2023 representatives are Max Barnes, Elizabeth Braddy, Joshua Li, and Aayush Praveen

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