Blind Swine

Early this month, I wrote about the term "blind swine" as it is used in chess literature with links to Edward Winter's historical inquiries. Logically, it seems to me, rooks on the seventh rank that can find checks, but not checkmate are blind pigs (or swine). Two rooks who cannot find checkmate still might prove their worth as a drawing resource.

This morning, an opening blunder dropped some pawns and I struggled on, reaching a rook ending that should have been hopeless. 

White to move

35.Rb7

I prepared to double my rooks on the seventh. Black cannot prevent this, but can render my rooks ineffective several ways:

35...h5 creates checkmate threats

35...Kh8 allows Rg8 to defend the g-pawn

35...a5 protects on pawn and leaves open the possibility of meeting 36.Rcc7 with Rg4

35...e4??

My opponent made one of the few moves possible to throw away the win.

36.Rcc7 Ra2+ 37.Kh3

Black to move

Black can no longer prevent endless checks from my rooks and the game was drawn by repetition after 37...g5 38.Rg7+ Kf8 39.Rbf7+ Ke8 40.Re7+ Kf8 41.Rgf7+ Kg8 42.Rg7+ Kf8 43.Rgf7+ Kg8 44.Rg7+ Kf8