Set Play:

1. ... Rxa4+ 2. Qxa4#

1. ... d4 2. Qe6#

Try: 1. Rb8? waiting

1. ... Rb5+ [a] 2. axb5 [A] #

1. ... Rxa4+ 2. Qxa4#

1. ... d4 2. Qe6#

But 1. ... Rxc5!

Try: 1. Kc3? waiting

1. ... Rxb5 [a] 2. Qxb5 [B] #

1. ... Rxa4 2. Qxa4#

But 1. ... d4+!

Try: 1. Qc2? [2. Qg6#]

1. ... Rxa4+ 2. Qxa4#

But 1. ... Rxb5+ [a] !

Solution: 1. Ka3! waiting

1. ... Rxb5 [a] 2. Qxb5 [B] #

1. ... Rxa4+ 2. Qxa4#

1. ... d4 2. Qe6#