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

[andrew buchanan]

Well the a1R# can be done by:

rnb1kbnr/p2ppppp/1p6/q5Q1/3P4/8/1PPBPPPP/r1KR1BNR
SPG 7.0

Similarly a1Q#. (i *did* try to go as fast as possible, lol)>

Andrew.

--- Nicolas.Dupont at math.univ-lille1.fr wrote:


> Vacancies on a1 (I didn't try to go as fast as possible).

> 

> > (1-1) promoted to Knight

> >

> > a1N# (vacant)

> 

> 1.Pa2-a4   Pd7-d5   2.Pa4-a5   Pd5-d4   3.Pa5-a6   Dd8-d5

> 4.Pa6xb7   Pa7-a5   5.Ta1-a3   Pa5-a4   6.Ta3-f3   Pa4-a3

> 7.Pc2-c4   Pa3-a2   8.Pc4-c5   Ta8-a3   9.Pc5-c6   Ta3-e3

> 10.Pd2-d3   Cb8-a6   11.Re1-d2   Dd5-a5   12.Rd2-c2   Pa2-a1=C

> 

> > (1-2) promoted to Bishop

> >

> > a1B# (vacant)

> 

> 1.Pa2-a4   Pe7-e6   2.Pa4-a5   Dd8-h4   3.Pa5-a6   Ff8-e7

> 4.Pa6xb7   Pa7-a5   5.Ta1-a3   Pa5-a4   6.Ta3-f3   Pa4-a3

> 7.Pb2-b4   Pa3-a2   8.Pb4-b5   Ta8-a3   9.Pb5-b6   Ta3-e3

> 10.Pd2-d3   Dh4-a4   11.Re1-d2   Fe7-h4   12.Rd2-c3   Cg8-f6

> 13.Fc1-d2   Pa2-a1=F

> 

> > (1-3) promoted to Rook

> >

> > a1R# (vacant)

> 

> 1.Pa2-a4   Cg8-f6   2.Pa4-a5   Cf6-e4   3.Pa5-a6   Ce4xd2

> 4.Pa6xb7   Cd2xb1   5.Fc1-f4   Pa7-a5   6.Pe2-e3   Pa5-a4

> 7.Dd1-h5   Pa4-a3   8.Pg2-g4   Pa3-a2   9.Ff1-g2   Cb1-a3

> 10.O-O-O    Ta8-a4   11.Td1-d2   Pa2-a1=T

> 

> > (1-4) promoted to Queen

> >

> > a1Q# (vacant)

> 

> Same game except 11... a1=D.

> 

> 

> 

> 

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