% Francois Labelle & computer, January 30, 2004
% All 4 checkmate PG-2.0 with exactly 2 solutions.
% They are all SPGs.

% Comment:
%
% These are all the versions of "Fool's mate".


(Forsyth-Edwards Notation, followed by the same list in ascii diagrams)

SPG-2.0:

rnb1kbnr/pppp1ppp/8/4p3/5PPq/8/PPPPP2P/RNBQKBNR
rnb1kbnr/pppp1ppp/4p3/8/5PPq/8/PPPPP2P/RNBQKBNR
rnb1kbnr/pppp1ppp/8/4p3/6Pq/5P2/PPPPP2P/RNBQKBNR
rnb1kbnr/pppp1ppp/4p3/8/6Pq/5P2/PPPPP2P/RNBQKBNR

 _________________ _________________ _________________ _________________ 
|                 |                 |                 |                 |
| r n b . k b n r | r n b . k b n r | r n b . k b n r | r n b . k b n r |
| p p p p . p p p | p p p p . p p p | p p p p . p p p | p p p p . p p p |
| . . . . . . . . | . . . . p . . . | . . . . . . . . | . . . . p . . . |
| . . . . p . . . | . . . . . . . . | . . . . p . . . | . . . . . . . . |
| . . . . . P P q | . . . . . P P q | . . . . . . P q | . . . . . . P q |
| . . . . . . . . | . . . . . . . . | . . . . . P . . | . . . . . P . . |
| P P P P P . . P | P P P P P . . P | P P P P P . . P | P P P P P . . P |
| R N B Q K B N R | R N B Q K B N R | R N B Q K B N R | R N B Q K B N R |
|_________________|_________________|_________________|_________________|