% Francois Labelle & computer, August 19, 2017
% All 3 PG-6.0 with exactly 1 checkmate solution, and at least 1 non-checkmate
% solution.

(Forsyth-Edwards Notation, followed by the same list in ascii diagrams,
followed by the checkmate solutions sorted by moves).

rn2kbnr/ppp3pp/8/4Pp2/4K1b1/8/PPPqPPPP/RNB2BNR
rnb1kbnr/ppp2p1p/4p3/3pP1p1/4K3/2q5/PPPP1PPP/RNBQ1BNR
rnb1kbnr/pppp3p/4p3/4Ppp1/4K3/2q5/PPPP1PPP/RNBQ1BNR

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


1. d4 e5 2. dxe5 f6 3. Qxd7+ Bxd7 4. Kd2 Bg4+ 5. Ke3 Qd2+ 6. Ke4 f5#
1. e4 e6 2. Ke2 Qf6 3. Ke3 Qc3+ 4. Kf4 d6 5. e5 g5+ 6. Ke4 d5#
1. e4 e6 2. Ke2 Qf6 3. Ke3 Qc3+ 4. Kf4 f6 5. e5 g5+ 6. Ke4 f5#