Günther Weeth

Günther Ernst Weeth (13-08-1935 - 28-12-2020) German chess composer

Günther Weeth was a direct mate and retro chess composer. One of his specialties was AntiCirce Proca Retractor but the variety of his interests can be seen from his problems registered on PDB.
Definition from the Retro Corner: A Proca-retractor in 5 (say) asks for White to retract 5 moves and then mate in 1 with a forward move. After every White retraction (but the last) Black retracts what he wants, trying to defend against the forward mate. White retractions must end in a forward mate against any retractive defense by Black.

Werner Keym and Wolfgang Dittmann wrote an article in "die Schwalbe" 244/2010 on the occasion of Günther Weeth's 75th birthday.

Source: chesscomposers.blogspot.com