1+19

h#1+19

[Black makes one move, then White mates in 19 moves]

Circe

Anticirce

No White King

Sol.  Black 1. Rf4; White 1.a2-a4 2.a4-a5 3.a5*b6[wPb6->b2][+bPb7] 4.b2-b4 5.b4-b5 6.b5*c6[wPc6->c2][+bPc7] 7.c2-c4 8.c4-c5 9.c5*d6[wPd6->d2][+bPd7] 10.d2-d4 11.d4-d5 12.d5*e6[wPe6->e2][+bPe7] 13.e2-e3 14.e3*f4[wPf4->f2] 15.f2-f4 16.f4-f5 17.f5-f6 18.f6-f7 19.f7-f8=Q #