KRPvkn

h#7

6Rk/7n/8/8/8/8/4P3/2K5 b - - 0 1

1. Kxg8 e3 Kf7 e4 Ke6 e5 Kd5 e6 Kc4 e7 Kb3 e8=Q Ka2 Qa4#

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

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

h#7

8/8/8/K7/8/8/3P3R/6nk b - - 0 1

1. Kxh2 d4 Kg3 d5 Kf4 d6 Ke5 d7 Kd6 Kb5 Kc7 Ka6 Kb8 d8=Q#

pure model 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#7

8/8/8/K7/8/k2n4/R1P5/8 b - - 0 1

1. Kxa2 cxd3 Kb3 d4 Kc4 d5 Kc5 d6 Kc6 d7 Kc7 Ka6 Kb8 d8=Q#

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

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

h#5

8/8/8/8/7k/4n3/1P6/K5R1 b - - 0 1

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

1. Nf1 Rh1+ Kg3 Kb1 Kf2 Kc2 Ke1 Kd3 Kd1 Rxf1#
2. Ng2 Kb1 Kg3 Kc2 Kf2 Rxg2+ Ke1 Kd3 Kd1 Rg1#

pure model mirror switchback

h#5

8/8/5k1n/8/8/8/5P2/K5R1 b - - 0 1

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

1. Ng4 f4 Kg7 f5 Kh8 f6 Nh6 f7 Ng8 fxg8=Q#
2. Nf7 f4 Ng5 f5 Kg7 f6+ Kh8 f7 Nh7 Rg8#

pure model promotion excelsior excelsior:white switchback self-block single-piece single-piece:white umnov

h#5

2k5/8/8/1R6/n7/8/1P6/K7 b - - 0 1

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

1. Nc5 b4 Nb7 Rc5+ Kb8 b5 Ka7 b6+ Ka8 Rc8#
2. Nb6 Ka2 Kb7 Kb3 Ka6 Rxb6+ Ka5 Kc4 Ka4 Ra6#

pure model mirror self-block umnov