KRBvkq

h#6.5

7k/3B4/6R1/8/8/8/q7/K7 w - - 0 1

1. Kxa2 Kh7 Kb3 Kh8 Kc4 Kh7 Kd5 Kh8 Ke6 Kh7 Kf7 Kh8 Rh6#

pure mirror switchback single-piece single-piece:black pendulum nocheck

Note: the side to move is in check in the diagram; the solution begins with a capture.

h#6.5

7k/5R2/8/8/8/8/2B5/qK6 w - - 0 1

1. Kxa1 Kg8 Kb2 Kh8 Kc3 Kg8 Kd4 Kh8 Ke5 Kg8 Kf6 Kh8 Rf8#

pure model ideal mirror switchback single-piece single-piece:black pendulum nocheck

Note: the side to move is in check in the diagram; the solution begins with a capture.

h#6.5

6Bk/8/6R1/8/8/8/q7/K7 w - - 0 1

1. Bxa2 Kh7 Kb2 Kh8 Kc3 Kh7 Kd4 Kh8 Ke5 Kh7 Kf6 Kh8 Rh6#

pure model ideal mirror switchback single-piece single-piece:black pendulum nocheck

Note: the side to move is in check in the diagram; the solution begins with a capture.

h#4.5

8/8/8/7k/8/8/R1B5/Kq6 w - - 0 1

Two solutions, with different first and last moves (2 starts, 2 ends).

1. Kxb1 Kg4 Kb2 Kf3 Kc3 Ke2 Bd3+ Kd1 Ra1#
2. Bxb1 Kg4 Kb2 Kf3 Ra1 Ke2 Kc3 Kd1 Bd3#

mirror single-piece single-piece:black

Note: the side to move is in check in the diagram; the solution begins with a capture.

h#4.5

8/8/3k4/8/2R5/7B/2q5/2K5 w - - 0 1

Two solutions, with different first and last moves (2 starts, 2 ends).

1. Kxc2 Kd5 Rh4 Kc5 Bg4 Kb4 Bd7+ Ka3 Ra4#
2. Rxc2 Kd5 Rd2+ Kc4 Rd5 Kb3 Be6 Ka2 Ra5#

pure model ideal mirror single-piece single-piece:black umnov

Note: the side to move is in check in the diagram; the solution begins with a capture.

h#4.5

4kB2/8/8/8/8/2R5/2q5/2K5 w - - 0 1

Two solutions, with different first and last moves (2 starts, 2 ends).

1. Kxc2 Kxf8 Kd3 Kg7 Ke4 Kh6 Kf5 Kh5 Rh3#
2. Rxc2 Kf7 Kd2 Kg6 Ke3 Kh5 Kf4 Kh4 Rh2#

pure model ideal mirror single-piece single-piece:black nocheck

Note: the side to move is in check in the diagram; the solution begins with a capture.