Why can't Chat GPT solve this?

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EnCrossiantIsBrilliant

Peskybird1234
Just underpromote to a rook, ez
EnCrossiantIsBrilliant

yes, but chatgpt says to queen and that its mate

Peskybird1234
Idk then
Peskybird1234
Does it understand stalemate?
EnCrossiantIsBrilliant

idk https://chatgpt.com/share/6747eab3-751c-800d-a353-bc4f3a0e4904