Alain Brobecker: The Messigny 2009 composition tourney was asking for PG with positions in which last single moves were determined. The ratios N/M of last N single moves for an M single moves PG was used to rate the problems. See P1085387 (12/32) , P1085388 , P1085389 , P1085390 , P1085391 , P1085392 , P1085393 , P1085394 and P1085395.

Also see P0001725 for a similar theme without PG. (2012-04-26)
Henrik Juel: In the shortest proof game all 32 single moves are determined, of course, but the point is that for any proof game the last 12 single moves are determined (2012-04-27)
Henrik Juel: I do not believe that Euclide can test that the last 12 moves are completely determined, so the C+ should refer to the proof game stipulation only (2012-04-27)
A.Buchanan: I like that wPc5h6 force a unique route for bSh1-d3, which makes ordering of wP moves unique. (2016-11-24)
A.Buchanan: Were the judging criteria entirely arithmetic? Andriy Frolkin's P1085388 & P1085389 have no check in the final diagram, which to me seems a big plus point. (2016-08-13, hidden) more ...
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