But instead of 7... c1, can't blacks queen shuttle up and down the a column, keeping a diagonal attack on white's queen while white's queen is on row 8 - with QxQ = stalemate? I think it has to be specifically 7 Qe8
7 Qe8 Qa4
8 Qe5+ Ka8
Now if black's queen moves to a1, white can take it - crucially with check, if black tries Qf4 white has Qa1 check, followed by mate.
Originally posted by Peakite
Well I didn't spot this one at all, though Q+P vs Q+P wouldn't work. Of course writing down the moves and it does.
1. b6+ Kb8
2. h4 a5
3. h5 a4
4. h6 a3
5. h7 a2
6. h8=Q a1=Q
Now Qxa1 is stalemate, but rather stupidlyI missed Qg8, Qf8 or Qe8. Depending on blacks next move white will soon mate.
8. Kd7+ (BTW any specific algebraic symbols for a check like this?)