Some progress has been made on Solitaire here, although I understand it's still ...

		sourcepluck 7 months ago \| parent \| context \| favorite \| on: How God Plays Chess (2018) Some progress has been made on Solitaire here, although I understand it's still not fully peer-reviewed (I think) https://arxiv.org/pdf/1906.12314v3

Many thanks for that pointer!