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

[andrew buchanan]

Hirokaz thanks for pointing out this path. How did I miss:

rnbqk1R1/pppppp2/6p1/6bp/8/7P/PPPPPP2/RNBQKBNR
PG in 5.5
"Andrew Buchanan & Hirokaz Onoda"?
(& sim for Q)

Cheers,
Andrew.

--- Hirokaz ONODA <glkoon at yahoo.co.jp> wrote:


> Hi,

> 

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

> 

>  1.Pg2-g4 Ph7-h5  2.Pg4-g5 Th8-h6  3.Pg5xh6 Pg7-g6

>  4.Ph6-h7 Ff8-h6  5.Pe2-e3 Fh6xe3  6.Pf2xe3 Pf7-f5

>  7.Ph7xg8=D 

> 

> Hiro