Rank #2816h ago

ChatGPT 5.5 Pro simulates chess game, generates multi-page analysis PDF

RGW

3 top authors

ChatGPT 5.5 Pro (Extended) simulated a full chess game and output a multi-page PDF report with move-by-move analysis. The model reimplemented quiescence search, evaluated its own play, and embedded a QR code linking to the Lichess PGN viewer. Riley Goodside, Staff Prompt Engineer at Google DeepMind, ran the demonstration to test chess reasoning and report-generation capabilities. Researcher Will Depue replied that a decent chess engine could fit inside a QR code.

First post

Riley Goodside@goodside·16hOriginal post

ChatGPT 5.5 Pro / Images 2.0 creates a photo of a wood-framed print in a modern art museum showing a QR code linking to a PGN viewer for a chess game where both sides play entirely at random for 67 half-moves then draw by mutual agreement. [Use the 2nd image to test the QR code]

Screenshot of ChatGPT dialog

User:

Wood-framed print in a modern art museum of a QR code that uses the lichess PGN viewer to display a game where both sides play entirely at random for 67 half-moves and then draw by mutual agreement.

ChatGPT:
> Thought for 2m 7s
[Generated image matching above description.]

Raw generated image returned as output in dialog from previous screenshot, showing a working, scannable QR code for a chess game in the lichess PGN viewer.

Screenshot of the lichess PGN viewer linked to by the QR code in ChatGPT’s output. The game shows a nonsensical board position and that exactly 67 half-moves were played. The final move is 34. Nb8…, and it’s obvious far better moves are available.

View on

Why it matters

Will Depue (OpenAI member of technical staff) built an instructional chess engine in Golang rated above 2100 Elo.

Riley Goodside (Google DeepMind staff prompt engineer) observed that chess receives little attention during large language model post-training.

Quiescence search lets chess engines explore captures and checks past their normal search depth to avoid the horizon effect.

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