Reflexmate in 2
A fine example of tries involving line play in a reflexmate. For examples of reflexmates see here.
If the f3 bishop gives up its control of d1 White will threaten 2.Rb1 forcing 2...axb1Q or R. The key is 1.Bc6 (threat 2.Rb1) when Black defends by unpinning the e3 knight. After 1...Sd4 White opens a guard on h1 – 2.Sf2 Se2, while 1...Sf2 allows 2.Sf4 Rh1. There is a by-play variation 1...a1B or S 2.Rxa1 Rxa1.
There are two thematic tries. 1.Bd5? is refuted by 1...Sd4, which forces 2.Sc4 mate, since the bishop move was an anticipatory closure of the line c4-g8. Similarly 1.Be4? fails to 1...Sf2, which again forces 2.Sc4 mate, since this time the bishop move was an anticipatory closure of the line c4-h4. The problem is noteworthy for the clarity of both its theme and its construction.