
This exact position is my invention (at least to the best of my knowledge), but I've seen the key idea at least twice before: once in a rapid Jay Bonin game, and once in Alexander Baburin's excellent Winning Pawn Structures. (Cf. his analysis of Kholmov-Kremenietsky, USSR Trade Unions Ch. 1981, pp. 105-108. A note about the book title: it's inapt (though it wasn't Baburin's fault), as 90% covers the isolated queen pawn and the remaining 10% the affiliated hanging pawns and isolated pawn couple structures. It's not a general treatise like Andy Soltis' Pawn Structure Chess or Hans Kmoch's old Pawn Power in Chess.)
This background out of the way, the task is to evaluate 1...g5. The solution will be given on Wednesday.