KNPvkr

h#7.5

N7/8/8/8/r7/K1k5/P7/8 w - - 0 1

1. Kxa4 Kd4 Kb4 Kd5 a4 Kc6 a5 Kb7 a6+ Kxa8 a7 Kb7 Kc5 Ka6 a8=Q#

pure model ideal mirror promotion excelsior excelsior:white switchback single-piece single-piece:black

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

h#7.5

KN6/r7/8/8/8/8/3P4/7k w - - 0 1

1. Kxa7 Kg2 d4 Kf3 d5 Ke4 d6 Kd5 Nc6 Kxc6 d7 Kc7 Ka6 Kb8 d8=Q#

pure model ideal mirror promotion excelsior excelsior:white single-piece single-piece:black nocheck umnov

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

h#6.5

8/8/8/8/8/1P6/1N6/2Kr2k1 w - - 0 1

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

1. Kc2 Kf2 b4 Ke3 b5 Kd4 b6 Kc5 b7 Kb4 b8=Q+ Ka3 Qb3#
2. Nxd1 Kf1 b4 Ke2 b5 Kd3 b6 Kc4 b7 Kb3 b8=Q+ Ka2 Qb2#

promotion closed-walk single-piece single-piece:black

Note: the side to move is in check in the diagram.

h#6.5

7k/8/8/8/2r5/N7/2P5/3K4 w - - 0 1

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

1. Kd2 Re4 c4 Kg7 c5 Kf6 c6 Ke5 c7 Kd4 c8=Q Re5 Qc4#
2. Nb1 Re4 c4 Kg7 c5 Kf6 c6 Ke5 c7 Kd4 c8=Q Kd3 Qc3#

promotion excelsior excelsior:white closed-walk self-block nocapture nocheck umnov

h#6.5

8/8/8/6k1/8/Kr1N4/P7/8 w - - 0 1

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

1. Kxb3 Kf5 a4 Ke4 a5 Kxd3 a6 Kd2 a7 Kc1 a8=Q Kb1 Qh1#
2. axb3 Kf5 b4 Ke4 b5 Kxd3 b6 Kc2 b7 Kb1 b8=Q+ Ka1 Qb2#

pure model ideal mirror promotion excelsior excelsior:white single-piece single-piece:white single-piece:black

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