The independent software studio of Elliott Clark. Consulting for teams who need a system made legible again, a few projects of its own, and writing on software, teams, companies, and AI.https://ottercrew.group/en-ushttps://ottercrew.group/blog/range-reader-10-embeddings/https://ottercrew.group/blog/range-reader-10-embeddings/No flat vocab table - factored additive embeddings built from poker primitives, and bet sizes fed as floats instead of bucketed tokensThu, 23 Jul 2026 13:00:00 GMThttps://ottercrew.group/blog/range-reader-09-translation/https://ottercrew.group/blog/range-reader-09-translation/Mask the hidden cards, translate the public betting record into a belief over 1,326 combos, and re-read the range at every streetThu, 23 Jul 2026 12:00:00 GMThttps://ottercrew.group/blog/range-reader-08-dataset/https://ottercrew.group/blog/range-reader-08-dataset/Machine learning starts with a dataset. Ours is a deliberately rough v0.1 - over 600,000 arena hands, a shove-happy cast of agents, and every hole card labeled.Wed, 22 Jul 2026 16:00:00 GMThttps://ottercrew.group/blog/range-reader-07-cfr-agent/https://ottercrew.group/blog/range-reader-07-cfr-agent/CFRAgent - budget-driven exploration, regret-based pruning, and board enumeration, wired into the arenaWed, 22 Jul 2026 15:00:00 GMThttps://ottercrew.group/blog/range-reader-06-trees/https://ottercrew.group/blog/range-reader-06-trees/CFR needs a huge self-referential, multi-threaded game tree - the memory-arena design behind CFRStateWed, 22 Jul 2026 14:00:00 GMThttps://ottercrew.group/blog/range-reader-05-little-sorry/https://ottercrew.group/blog/range-reader-05-little-sorry/A small crate for a big idea: regret matching, CFR+, and the discounted and predictive variants - the numeric core every solver sharesWed, 22 Jul 2026 13:00:00 GMThttps://ottercrew.group/blog/range-reader-04-regret/https://ottercrew.group/blog/range-reader-04-regret/Counterfactual regret minimization from zero - how tracking what you wish you'd done converges to unexploitable pokerWed, 22 Jul 2026 12:00:00 GMThttps://ottercrew.group/blog/range-reader-03-arena/https://ottercrew.group/blog/range-reader-03-arena/Inside rs-poker's arena - the game state machine, the Agent trait, historians, side pots, invariant-checked fuzzing, and the tournament that crowned a botWed, 22 Jul 2026 11:00:00 GMThttps://ottercrew.group/blog/range-reader-02-evaluator/https://ottercrew.group/blog/range-reader-02-evaluator/The perfect-hash hand evaluator - how rs-poker ranks poker hands in less than a nanosecondWed, 22 Jul 2026 10:00:00 GMThttps://ottercrew.group/blog/range-reader-01-cards/https://ottercrew.group/blog/range-reader-01-cards/Ten years of representing cards, hands, and decks in Rust - from Vec<Card> to bitsets, and why representation sets your speed ceilingWed, 22 Jul 2026 09:00:00 GMThttps://ottercrew.group/blog/range-reader-00-intro/https://ottercrew.group/blog/range-reader-00-intro/There is no open source engine for multiway no-limit hold'em. A 13-part series building one - fast cards, a full-rules arena, CFR, and a GPT that reads your handTue, 21 Jul 2026 00:00:00 GMThttps://ottercrew.group/blog/poker-v5/https://ottercrew.group/blog/poker-v5/rs-poker v5.0.0 releases with async RL arena, a state-of-the-art CFR agent, and an `rsp` CLISat, 09 May 2026 00:00:00 GMThttps://ottercrew.group/blog/welcome/https://ottercrew.group/blog/welcome/Welcome, lets discuss what Otter Crew is, and what we're about.Fri, 08 May 2026 00:00:00 GMT