A problem that combines a logical three-move theme with pattern play and
an extra aesthetic touch.
Tries 1.Sa3? threat 2.Sc4 but 1..Rxe4! and 1.Se1? threat 2.Sd3 but 1..fxe4!
1.Kc7 threat 2.Rd5+ exd5 3.Rxe7
1...Rxe4 2.Se1 threats 3.Sd3 and 3.Sf3; 2...Re3 3.f4
1...fxe4 2.Sa3 threat 3.Sc4; 2...e3 3.Bxf4
Both variations show the Dresden theme, where a successful defence to a white threat is replaced by an unsuccessful defence following the decoy of a piece. In this case the theme is known as Brunner-Dresden, since both the decoy and unsuccessful defence are played by a different piece to the one which defeated the try threat. The problem also shows the Banny reversal pattern 1.Try? threat 2.A, 1...a! 1.Try? threat 2.B, 1...b! 1.Key 1...a 2.B, 1...b 2.A. Extra unity is given by both defences occurring on the same square and both mates occurring on the same square.
Jacob Hoover: The defences that defeated the tries reappear, but for each defence the white response is the other try (the Banny theme) and the black defence to this response blocks the c1-bishop’s guard of f4. This was rather easy as three-movers go.
Juha Neitola: A combination of the Banny and Dresden themes with a comically uniform pattern for Black’s minimal range defending moves. The only thing in Black’s power is to decide which white unit will deliver mate at f4.