GM Daniel Naroditsky (NC)
- World Youth U12 Champion and US Junior Champion
- Chess streamer, Youtuber, commentator, coach, and author
- Represented USA at the World Team Championship
- Ranked #1 in the US for his age group for 8+ years
- Defeated GMs Caruana and Xiong at 2021 US Champ.
- Peak ratings 2647 FIDE, 2733 USCF, 2707 FIDE Blitz
- Castle Chess Instructor since 2015 (8th year)
GM Dariusz Swiercz (Missouri)
- World Junior U20 and World Youth U18 Champion
- Represented Poland & USA at the Olympiad & World Team
- Grandmaster at age 14, chess author/course creator
- Winner of Pan-Am Intercollegiate & Millionaire Chess Open
- Defeated GMs Aronian, MVL, Niemann, Xiong, J. Polgar
- Peak ratings 2670 FIDE (World #71) and 2769 USCF
- Castle Chess Instructor since 2023 (2nd year)
GM Boris Avrukh (Illinois)
- Experienced instructor with decades of training experience
- 2-time Israeli Champion
- Well-known opening theoretician and 10-time chess author
- Trainer of GMs Kramnik, Gelfand, Caruana, So
- Competed in FIDE World Championship
- Peak ratings 2668 FIDE (World #50) and 2711 USCF
- New Castle Chess Instructor!
GM Alex Lenderman (New York)
- World Youth U16 Champion, World Open, US Open Champion
- Won the last 4 Castle Chess Grand Prix tournaments
- Has defeated GMs Ivanchuk, Shirov, Eljanov, Vallejo, Kamsky
- Represented USA at the World Team Champ. (Gold medal)
- Competed in FIDE World Cup
- Peak ratings 2654 FIDE (World #97) and 2743 USCF
- Castle Chess Instructor since 2018 (5th year)
GM Magesh Panchanathan (NC)
- World Open, New Jersey Open, and Asian Junior Champion
- #4 rated player in North Carolina
- Former member of UT Dallas Chess Team
- Has defeated GMs Mamedyarov, Xiong, Howell, Mamedov
- Owner of Kings and Queens Chess Academy in North Carolina
- Peak ratings 2586 FIDE and 2652 USCF
- Castle Chess Instructor since 2012 (11th year)
GM John Fedorowicz (New York)
- Won 2 US Juniors, 5 World Opens, US Open, NY Open, Wijk B
- Represented USA at the Olympiad
- US Chess Hall of Fame inductee
- Former coach of GM Gata Kamsky & the US Olympiad Team
- Defeated World Champions Vishy Anand & Vasily Smyslov
- Peak ratings 2574 FIDE and 2672 USCF
- Castle Chess Instructor since 2004 (19th year)
IM John Bartholomew (Minnesota) Floating Instructor
- Professional chess coach, Youtuber and streamer
- Co-founder of Chessable
- National Junior High Champion, 1 GM norm
- Member of UT Dallas Chess Team & MN Chess Hall of Fame
- #2 rated player from Minnesota
- Peak ratings 2477 FIDE and 2576 USCF
- New Castle Chess Instructor!
WGM Sabina-Francesca Foisor (Kentucky)
- 2017 US Women’s Champion
- 4-time European Youth medalist
- Competed in 2008 Women’s World Championship
- Represented USA in 6 Chess Olympiads and 4 World Teams
- #4 rated player from Kentucky
- Peak ratings 2386 FIDE and 2455 USCF
- New Castle Chess Instructor!
FM Robby Adamson (Arizona)
- Denker Tournament of HS Champions winner
- Coach of Catalina Foothills HS (10 national titles), FIDE Trainer
- Former coach of GM & World Junior Champion Tal Shaked
- Member of US Chess Scholastic Council
- #6 rated player from Arizona
- Peak ratings 2378 FIDE and 2447 USCF, 3 IM norms
- Castle Chess Instructor since 2019 (4th year)
FM Peter Giannatos (NC) Floating Instructor
- Went from 589 to 2000+ in 4 years
- Founder of the Charlotte Chess Center
- Published chess author
- FIDE Master and USCF Life Master
- National TD, International Arbiter, International Organizer
- Peak ratings 2300 FIDE and 2390 USCF
- Castle Chess Instructor since 2017 (6th year)
NM Bryan Tillis (Florida)
- USCF National Master and Life Master
- USCF Senior TD, FIDE Arbiter, and FIDE Trainer
- Chess author, course creator, and coach
- Castle Chess Board Member, former camper/counselor
- Castle Chess Instructor since 2017 (6th year)
- Peak USCF rating 2274
Former Instructors:
- GMs: Varuzhan Akobian, Julio Becerra, Greg Serper, Alonso Zapata, Jesse Kraai, Nick DeFirmian, Irina Krush, Ben Finegold, Sam Palatnik, Joel Benjamin, Arthur Bisguier, Pascal Charbonneau, Daniel Fernandez, Boris Kreiman, Tal Shaked
- IMs: Anna Zatonskih, Eric Rosen, Danny Rensch, Carlos Perdomo, Jonathan Schroer, Greg Shahade, Daniel Ludwig, Martha Fierro, Keaton Kiewra, Silas Lund, Stephen Muhammad, Kassa Korley, Nazi Paikidze
- FMs: Aviv Friedman, Mike Klein, Alex Dunne, Richard Francisco, Kazim Gulamali, Andrew Whatley
- WIMs: Maria Carolina Blanco, Beatriz Marinello
- NMs: Chris Mabe, Damir Studen, Tim Brookshear, Rubin Miller, Robert Tanner
- Experts: Jim Mundy, Richard Long, Justin Morrison, Gary Southerland