Originally posted by BigDoggProblemNice one. White's moves are counted, only the sequence (and what to capture) is still open. During most of the game, black seems to be in need of tempi to allow white to free enough squares to move his pieces. And then suddenly, black needs an underpromotion to lose a tempo.
Robert Osorio
Messigny 2006
[fen]2kq1bn1/1ppnppp1/3p4/3B3p/2R5/PP1P1PP1/Q2PP2P/KNB1N2R b - - 0 17[/fen]
PG in 16.5 moves
(White just made his 17th move; find the gamescore)
1.g3 h5
2.Bg2 Rh6
3.Bd5 Rb6
4.Nf3 Rb3
5.axb3 d6
6.Ra4 Bf5
7.Rc4 Bd3
8.cxd3 a5
9.Qc2 a4
10.Kd1 a3
11.Ne1 a2
12.f3 Ra3
13.bxa3 a1=R
14.Qa2 Kd7
15.Kc2 Kc8
16.Kb2 Nd7
17.Kxa1