Try :
1. Bxb4 ? Blocus.
1.....Kc2 ? 2. Re3 ! Kd1 3. Bb3 #
1.....Kd4 ! 2. Bb3 Kd3 and mate in 2
Solution :
1. Rd8 ! Blocus
Thematic variants :
1....Kd4 2. Bb3 discovery + ! Ke4 3. Bc2 #
1....Kd2 2. Bxf3 discovery + ! Kc2 3. Bd1 # pure mate
2....Ke1 3. Rd1 # pure mate (not thematic)
1....b3 2. Bxf3 discovery + ! Kc4 3. Be2 # selfblock pawn b3
Not thematic variants :
1....Kc2 2. Be6 ! b3 3. Bxf5 # selfblock pawn b3
1....Ke2 2. Bc4+ Ke1 3. Bxb4 #
Commentary :
The same white piece gives a discovery check, leaving a flight square for black King
and mates on this square.
Three thematic variants and two not thematic.
Six distincts mates. Meredith.