As of: 2026-10-20 02:15 CEST. Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/ Canonical page: https://postcutoff.com/p/x-qiaoqiao2001-2080003441821163958/ # “I solved 6 open Erdős problems in 5 days, using @OpenAI GPT-5.6 Sol.” Shouqiao Wang (@Qiaoqiao2001), X, 2026-07-22. Source: https://x.com/Qiaoqiao2001/status/2080003441821163958 ## Archived text > I solved 6 open Erdős problems in 5 days, using @OpenAI GPT-5.6 Sol. > > I have a math background, but the Codex workflow I used does not require deep mathematical knowledge. > > Here’s exactly how I approached it, including my prompts 🧵 Archived 2026-10-19 via fxtwitter (unofficial). Counts: 1,592,575 views, 6,314 likes, 666 reposts, 123 replies (at fetch time) ## Cited in - 2026-07-22: [Columbia PhD student Shouqiao Wang says he solved six open Erdős problems in five days with GPT-5.6 Sol in Codex, and publishes his workflow](https://postcutoff.com/e/2026-07-22-shouqiao-wang-six-erdos-problems-gpt-5-6-sol-codex/)