Eric WagonerandClaude Opus 5.5 e961951f8e A move names the round it was made for; a stale one is refused
The room counts rounds played and sends the count in its view; a page
sends it back with each move, and the server refuses a move whose count
is behind (a slow connection, a second click, a stale tab), or that has
no count at all (an old page, told to reload). Before, such a move was
taken as the move for the next round. Found in Dip's acceptance run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG
2026-09-25 22:19:44 -04:00
2026-09-23 12:45:44 -04:00

Hnefatafl

The Viking board game, in the browser: the attackers must take the king, the king must reach the edge. Tablut, the nine-by-nine game Linnaeus wrote down in 1732, by default, on a board that shows its age; Copenhagen rules on the eleven-by-eleven board, where the king needs a corner, as an option.

Built on the game kit: src/lib/game/ is the game (rules as data in rules.ts, the board's mechanics in board.ts, the engine in index.ts, a short alpha-beta bot in bot.ts), src/lib/components/Board.svelte is the board, and everything else is the kit's hall, tables, gallery, ledgers, reports desk and ops tools. docs/conventions.md is the house style; the guide here departs from it in one way, walking the page in words and one drawn figure rather than screenshots.

npm install && (cd server && npm install)
npm run server      # the game server on port 8789
npm run dev -- --host

Tests: npm test. Deploy: deploy/deploy.sh <ip> after deploy/README.md.

S
Description
Hnefatafl, the Viking board game, in the browser: Copenhagen rules and Linnaeus's Tablut, on the game kit.
Readme
1.3 MiB
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TypeScript 46.9%
Svelte 36.6%
Shell 10.6%
Python 2.9%
CSS 1.4%
Other 1.6%