Black moved last. What was Black's last move & what was White's?



There are, at least, 3 solutions.

A white pawn on a7 makes a capture on b8 promoting to bishop and giving check, would allow several different "solutions" depending on which black piece was on b8 (bishop, knight, rook, queen) -- in addition to the other two (promotion from b7; knigth to h1) .  Perhaps that is the meaning of the "at least" three solutions -- since the quantity depends upon how you would count the various paths to promotion.

EDIT: first line should be "white pawn on c7"...  

Edited on March 4, 2009, 1:15 pm

EDIT: From curiosity: where do the time stamps on the postings come from?? They do not seem just from different time zones from GMT.

Edited on March 4, 2009, 1:17 pm

Edited on March 4, 2009, 1:20 pm

Posted by ed bottemiller on 2009-03-04 13:12:02