Castleblanca2026
Study the greatest masters. 12 legends. 36,000+ games. Then it's your move.
Chess's immortal games, Fischer in Reykjavik, Carlsen's championship endgames, are cultural heritage, but they live buried in utilitarian databases built for grandmasters. Castleblanca presents them the way a museum presents masterpieces: curated collections from the legends who shaped chess history, annotated and walkable. It turns the deepest game ever devised into something a new player wants to enter.
Business case
Online chess instruction and play is a focused market of roughly $270M growing about 13% a year, with subscription monetization proven at scale by Chess.com and a vast free-player funnel created by the post-2020 boom. Castleblanca is live with a real content moat, 12 curated grandmaster collections spanning 36,202 games, and a design-led experience no utilitarian incumbent can match. A devoted niche that pays for craft is the entire business model, and chess players demonstrably do.
Market
Online chess instruction & play · projected by 2035
The online chess instruction and play market is valued at roughly $270M in 2026 and projected to reach about $860M by 2035 (≈13.1% CAGR). Over 70% of learners prefer online instruction, and Europe, with the deepest chess culture, holds nearly 40% of the market.
12 grandmaster collections, open
Study curated games from the legends who shaped chess history: 12 masters, 36,000+ games, annotated and walkable.
Explore the collection →
