Marcel Doré (France)
 
#5 4+7

1. Bb3 ? Threat 2. K~ Kf8 ! (2....Kh8 ? 3. Rh7 #) 3. g7+ Ke8 4. g8=Q(R) #
1....a1=N ! 2. Bc4 b5 ! or 2. Ba2 Nb3 ! and mate in 4.

1. Bg4 ! Threat 2. Be6+ and same mates as thematic try of 2....Kf8 or 2....Kh8.

A) 1....Bc5
2. Be6+ Kf8 ! (2....Kh8 ? 3. Rh7 #)
3. g7+ Ke8
4. Rc8+ !
4. g8=Q+ ? Bf8 ! 5. ?
4....Ke7
5. g8=N ! # Model mate.

B) 1....h1=Q
2. Be6+ Kh8 ! (2....Kf8 ? 3. g7+ Ke8 4. g8=Q(R) #)
3. g7+ Kh7
4. g8=Q+ !
4. g8=R+ ? Kh6 5. ?
4....Kh6
5. Rh7 #