[Retros] Pawn to-the-8th-rank mates

[Hirokaz ONODA]

Hi,

(1-4') Queening is MUST(underpromotion is insufficient)

 1.Pd2-d3 Cg8-h6  2.Fc1xh6 Pg7xh6  3.Pf2-f4 Ff8-g7
 4.Pf4-f5 Fg7-c3  5.Pb2xc3 Th8-g8  6.Pf5-f6 Tg8-g7
 7.Pf6xg7 Pf7-f6  8.Pg7-g8=D 
 
 1.Pd2-d3 Cg8-h6  2.Fc1xh6 Pg7xh6  3.Pg2-g4 Ph6-h5
 4.Pg4-g5 Ff8-h6  5.Pg5-g6 Fh6-c1  6.Dd1-d2 0-0
 7.Re1-d1 Tf8-e8  8.Pg6xh7 Rg8-f8  9.Ph7-h8=D

Hiro


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