Oudot task
Promotion of three black pawns to queen in a single solution. Yet unachieved task.
See also: Promotion.
Pfeiffer, Gerhard
Die Schwalbe, 1985
Spec. HM
h#9 (2+15)
1.d1=Q
Kg1
2.Qd5
Kh1
3.Qf3
gxf3
4.a1=Q
f4
5.Qa2
f5
6.Qe6
fxe6
7.c1=Q
e7
8.Qc5
e8=S
9.Qa7
Sc7#
Illegal position: 10 black pawns.