1...a2-a4  
2.Ke6-e4/wPe2-e5 e5-e6  
3.Qb3-b4 e6-e7  
4.Ke4-c4/bQb4-d4 e7-e8=Q  
5.Rf3-c3 Qe8-b5 #

1...a2*b3  
2.Ke6-c4/wPb3-d5 d5-d6  
3.Kc4-e4/bBg4-d4 d6-d7  
4.Rf3-f4   d7-d8=Q  
5.Bd4-e5 Qd8-d3 #

1...Kh2*g1  
2.Rf3-e3  Kg1-g2  
3.Ke6-e4/bRe3-e5 e2-e3  
4.Bg4-f5  Kg2-e2/wPa2-f2  
5.Qb3-d5 f2-f3 #

The 10th Informal Thematic Tourney of „The Problemistic Courier” 2020.
The solution 1....axb3 allow program Popeye only.
WinChloe will not allow a castling type 2.Ke6-c4 / wPb3-d5.(Author)