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2048 · ministral-3b-2512

Output saved · Stopped by an API error Cost / run $0.0104 Runtime 449.6s

A model request failed and its retries ran out. The output is the HTML saved before that.

Prompt for this run

Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.

⛨ sandboxed Open in new tab ↗

TAKE IT TO CODE

A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.

RUN

modelministral-3b-2512
vendorMistral AI
harnesspi 0.87.1 · browser iteration
generated2026-10-07

METRICS

runtime449.6s
tokens in510k
tokens out38k
cached493k
cost / run$0.0104
Transcript · 48 messages
system

user

Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.

assistant
→ write /tmp/job-Mgr2hB/index.html (14257 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","error: Unexpected token 'const'"],"dom":"2048\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

The game UI is displayed but there are issues in the code that need to be fixed. The console error indicates an unexpected token `const` in the JavaScript, and the board is not rendered correctly. Let's fix the JavaScript logic and ensure the board updates properly. Here are the key issues to address: 1. The `moveRight` and `moveDown` logic is incomplete and incorrect. 2. The `updateScore` logic is not correctly identifying merged tiles. 3. The `checkWinOrGameOver` logic needs refinement to detect valid moves. I'll correct these issues and re-render the game.

→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" moveRight(board) {\n return board.reduce((mergedRows, r
→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" moveDown(board) {\n return board.map((row, i) => {\n
→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" updateScore() {\n const emptyCells = this.board.reduce(
→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" checkWinOrGameOver() {\n const emptyCells = this.board.
→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" handleMove(direction) {\n if (this.gameOver || this.win
→ edit {"path":"/tmp/job-Mgr2hB/index.html","edits":[{"oldText":" addNewTile() {\n const emptyCells = this.board.reduce((
toolResult

Could not find the exact text in /tmp/job-Mgr2hB/index.html. The old text must match exactly including all whitespace and newlines.

toolResult

Successfully replaced 1 block(s) in /tmp/job-Mgr2hB/index.html.

toolResult

Successfully replaced 1 block(s) in /tmp/job-Mgr2hB/index.html.

toolResult

No changes made to /tmp/job-Mgr2hB/index.html. The replacement produced identical content. This might indicate an issue with special characters or the text not existing as expected.

toolResult

Successfully replaced 1 block(s) in /tmp/job-Mgr2hB/index.html.

toolResult

Successfully replaced 1 block(s) in /tmp/job-Mgr2hB/index.html.

assistant

Let me correct the logic and ensure the changes are applied properly. I'll redefine the `moveRight` and `moveDown` functions with proper animation and score updates.

→ write /tmp/job-Mgr2hB/index.html (16071 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"2048\n2\n2\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

The game now displays the initial tiles correctly, but the tiles aren't sliding or merging properly when moving. Let's fix the animation and logic for sliding tiles and merging. I'll add animation logic and ensure the board updates correctly. Here's the corrected version with animations and proper merging:

→ write /tmp/job-Mgr2hB/index.html (16442 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"2048\n2\n2\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

The tiles are now appearing correctly, but the sliding and merging animations are missing. Let's add animation logic to make the tiles slide and merge smoothly. I'll animate the tiles using CSS transitions and JavaScript to handle the movement.

→ write /tmp/job-Mgr2hB/index.html (18522 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"2048\n2\n2\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

The tiles are still not sliding or merging properly. Let's implement a more robust sliding animation and ensure tiles slide smoothly across the board. I'll add proper sliding logic and animation for each direction.

→ write /tmp/job-Mgr2hB/index.html (21195 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","error: Invalid or unexpected token"],"dom":"2048\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

Let me simplify the approach and focus on the core functionality of sliding tiles and merging. I'll implement a more straightforward sliding animation and ensure the tiles move smoothly.

→ write /tmp/job-Mgr2hB/index.html (18382 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","error: Invalid or unexpected token"],"dom":"2048\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

Let me simplify the approach and focus on the core functionality without complex animations. I'll implement a basic version that meets the requirements of sliding tiles, merging, and score tracking.

→ write /tmp/job-Mgr2hB/index.html (14788 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"2048\n2\n2\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

The tiles are now visible, but the sliding and merging logic isn't working as expected. Let's implement a working version with proper sliding and merging logic. I'll focus on the core functionality: 1. Tiles slide in the selected direction 2. Adjacent equal tiles merge 3. Score updates correctly 4. New tiles spawn after moves Here's the corrected implementation:

→ write /tmp/job-Mgr2hB/index.html (13422 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"2048\n2\n2\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant

I see the issue now. The tiles aren't sliding or merging properly because the grid layout isn't being handled correctly for sliding. Let's implement a working version with proper sliding logic and animations. Here's the final implementation: 1. Proper sliding in all directions 2. Correct merging of adjacent tiles 3. Score updates 4. New tile spawn after moves I'll fix the sliding logic and ensure tiles move smoothly:

→ write /tmp/job-Mgr2hB/index.html (15927 bytes)
toolResult

Successfully wrote to /tmp/job-Mgr2hB/index.html

assistant
→ browser {"action":"reload"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","error: Invalid or unexpected token"],"dom":"2048\nScore: 0\nNew Game\n↑\n↓\n←\n→","images":"attached"}

assistant
assistant
assistant