A Japanese King in a Chess Joke

ser-h=13 (2+1)
Circe
bKh7 = Japanese King

"A Japanese King is simply a partial King which cannot move backward. When it reaches the eighth rank, it promotes into a full King and acquires an ability to move backward" (M.A. Ridley, Fairy Kings, "Mat Plus Review" 9-10, Spring-Summer 2009, p.18).

Donc, the solution is:

1. JKh6 2. JKh5 3. JKh4 4. JKh3 5. JKh2 6. JKh1= Full King 7. JKh2 8. JKh3 9. JKh4 10. JKh5 11. JKh6 12. JKh7 13. JKxRg8 (Rh1), Rh7 =

Some Shogi Pepper

[9x9 Chessboard]

(3+4)

Circe

Pf4 = Royal piece

Nd2 = Shogi Knight

Ke1= DummyKing

Sol. 1. fxe3 e.p. (as retroanalysis shows, the last White's move was 0...e2-e4) 2. e3xNd2 (Nh1) 3. exKe1, Nh3 =

Ok, never ever a White Shogi Knight could reach d2: it's an artistic license :)

The first (?) helpmate

According to this 2006 post, the first helpmate is:

Max Lange "Deutsche Schachzeitung" 12/1854 
 
h#3 white to play 

Ok, according to Popeye, it's cooked:

 1.Kc6-b7 Kc2-d2 2.Kb7-a8 Bb1-e4 #
1.Kc6-b7 Kc2-c3 2.Kb7-a8 Bb1-e4 #
1.Kc6-b7 Kc2-b2 2.Kb7-a8 Bb1-e4 #
1.Kc6-b7 Kc2-c1 2.Kb7-a8 Bb1-e4 #
1.Kc6-b7 Kc2-b3 2.Kb7-a8 Bb1-e4 #
1.Kc6-b7 Kc2-d1 2.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-e3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-e1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Kd2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-d2 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-b4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-d4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Kc3-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-c3 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Kb2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Kb2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Kb2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Kb2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Kb2-a1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-b2 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Kc1-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Kc1-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Kc1-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-c1 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-b4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Kb3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-b3 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-e3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-d4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d3 2.Kc7-b7 Kd3-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Kd1-e1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Kd1-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Kd1-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Kd1-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-c7 Kc2-d1 2.Kc7-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Kc2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a4 2.Kc7-b7 Bb1-a2 3.Kb7-a8 Ba2-d5 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Kc2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-c7 a2-a3 2.Kc7-b7 Bb1-a2 3.Kb7-a8 Ba2-d5 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-e3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-e1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Kd2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-d2 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-b4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-d4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Kc3-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-c3 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Kb2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Kb2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Kb2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Kb2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Kb2-a1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-b2 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Kc1-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Kc1-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Kc1-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-c1 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-b4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Kb3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-b3 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-e3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-d4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-c4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d3 2.Kb6-b7 Kd3-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 a2-a4 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 a2-a3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Kd1-e1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Kd1-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Kd1-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Kd1-e2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Bb1-h7 3.Kb7-a8 Bh7-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Bb1-g6 3.Kb7-a8 Bg6-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Bb1-f5 3.Kb7-a8 Bf5-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Bb1-d3 3.Kb7-a8 Bd3-e4 #
1.Kc6-b6 Kc2-d1 2.Kb6-b7 Bb1-c2 3.Kb7-a8 Bc2-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Kc2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a4 2.Kb6-b7 Bb1-a2 3.Kb7-a8 Ba2-d5 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-d2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-c3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-b2 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-c1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-b3 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Kc2-d1 3.Kb7-a8 Bb1-e4 #
1.Kc6-b6 a2-a3 2.Kb6-b7 Bb1-a2 3.Kb7-a8 Ba2-d5 #

But it was the first... Pardonnez! Anyway, I like to think otherwise: Sam Loyd was the inventor of Hm, because he understood its poetry (who cares about his mistakes?). Here it is the long claim of his The Sin of the Nuns ("Chess Monthly", Nov. 1860):

Two nuns, Sister Maria and Sister Anna, in the wealthy Portuguese convent of Santa Isabella, have been frequent antagonists at chess. The game was a favorite of the nuns, in spite of the tirade that Cardinal Damianus had written against it. Usually, Sister Maria was easily the victor; but one afternoon she found her play had grown inexplicably worse. Sister Anna was gaining Pawn after Pawn, and Sister Maria's head was so confused, that she could not head her off.
At length, she suspected the reason. She had been of late on the verge of a delightful romance with a youth who had beheld her in church, and who had since plied her with various mysterious attentions. The latest of these had been a basket, containing two luscious apples, let down one evening over the convent wall into Sister Maria's expectant hands. Apples, you know, are still a forbidden fruit in the convents of Portugal, and it was unquestionably the eating of one of them that had clouded her brain and spoiled her chess. But what could be done? Eve, in an analogous situation, had given another apple to her companion. This remedy could readily be tried, so Sister Maria slipped away a moment from the table where they were playing and soon returned with the round and golden fruit. Who can doubt the effect of the stratagem? Sister Anna first refused, then hesitated, and then ate. Everybody can imagine the result. Both were now suddenly conscious of a less clear insight into the mysteries of their sport. The game assumed the following appearance: 

"Sister Maria was playing the White pieces, and Sister Anna had, as will be evident even to the tyro, a won game. But impelled by the evil spirit of the apple, she now moved so that Sister Maria was enabled to mate her in three moves. How did she do it?" (now in Alain C. White, Sam Loyd and His Chess Problems, Fredonia Books, Amsterdam 2003 [1913 1st ed.], p. 31).

The solution of that problem is unique:  1.Kf5-f6 Rg8-a8 2.Kf6-g7 Bf4-b8 3.Kg7-h8 Bb8-e5 #

But this was the original problem:

And, now, the solution is multiple: it's another problem, indeed...

1.Bg2-f3 Kd4-c4 2.Kf5-e4 Rg8-d8 3.Qh7-f5 Rd8-d4 #
1.Bg2-f3 Kd4-c3 2.Kf5-e4 Rg8-d8 3.Qh7-f5 Rd8-d4 #
1.Kf5-f6 Rg8-a8 2.Kf6-g7 Bf4-b8 3.Kg7-h8 Bb8-e5 #

Three Pawns, One Problem

(1 + 2)

h=3

No White King

pd4 = Royal piece

Well, maybe "problem" is a pompous word for this simple puzzle of mine, but the position is nice, I think. Here it is the easy solution: 1. rpd3, h7 2. rpd2, h8=B 3. rpd1=rN, Bd4=.