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

[Hirokaz ONODA]

Hi,

=R# unique, whereas =Q# non-unique
 
 1.Pa2-a4 Pc7-c6  2.Pa4-a5 Dd8xa5  3.Ta1xa5 Re8-d8
 4.Ta5-c5 Pa7-a5  5.Pb2-b4 Pa5xb4  6.Fc1-a3 Pb4xa3
 7.Dd1-c1 Pa3-a2  8.Dc1-a3 Rd8-c7  9.Da3-h3 Pa2xb1=T

Hiro


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