I’m going to inspect the current Gomoku project structure first, then I’ll identify what already exists for board state, rendering, and game flow before wiring in AI and win detection.
pwd
The repository looks either empty or nearly empty. I’m checking the actual directory contents now and confirming whether there’s an existing app to extend or whether I should build the game from scratch.
git status --short
Failed
git status --short
2026-04-19 17:10:16.280 xcodebuild[60663:50240053] DVTFilePathFSEvents: Failed to start fs event stream.
git: warning: confstr() failed with code 5: couldn't get path of DARWIN_USER_TEMP_DIR; using /tmp instead
fatal: not a git repository (or any of the parent directories): .git
There isn’t an existing app here, so I’m building a self-contained implementation from scratch. I’m checking whether there are any local project conventions to respect, then I’ll add a browser-based Gomoku with a heuristic AI, turn handling, and explicit five-in-a-row detection.
The full UI and core logic are in place. I’m verifying the JavaScript parses cleanly and reviewing the move-scoring logic for edge cases like first-move response, draw handling, and long-line wins.
node --check app.js
node --check app.js
No output.
I found one avoidable dependency: the page was pulling a web font. I’m removing that so the game stays fully local and works by opening index.html
with no network requirement.
Built a standalone browser Gomoku game in , , and . It renders a 15x15 board, lets the player place black stones, detects wins in all four directions, highlights the winning line, tracks turns and move count, and supports restarting the match.
The AI is heuristic rather than random. It searches nearby candidate moves, scores offensive patterns for itself, scores defensive blocks against the player, adds center preference, and chooses the strongest move. There's also an optional “AI focus area” overlay so you can see the strongest candidate points it considered.
Verification: node --check app.js
passed. I did not run an interactive browser session here, so the remaining step is to open in a browser and play.