https://citadelchallenge.com/2026-09-291.0 https://citadelchallenge.com/rules2026-09-290.4 https://citadelchallenge.com/facts2026-09-290.8 https://citadelchallenge.com/partner2026-09-290.3 https://citadelchallenge.com/c/build-a-recycled-castle2026-09-290.6 https://citadelchallenge.com/c/7-day-fortress-fact-streak2026-09-290.6 https://citadelchallenge.com/c/free-virtual-tour2026-09-290.6