New answers tagged world-championship
4
Carlsen introduced 8... Ne7 (after 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Nd5 Nxd5 8.exd5) instead of 8...Nb8. He played this in round 12 and then again in game two of the tiebreak. The line was known before but not played at the highest level and therefore not considered a serious approach by black.
You can find the analyzed games here ...
4
Found a Rubinstein game!
[fen ""]
[Date "1908.??.??"]
[White "Alapin, Simon"]
[Black "Rubinstein, Akiba"]
[WhiteElo "2500"]
[BlackElo "2640"]
[Result "0-1"]
1.e4 e5 2.Ne2 Nf6 3.f4 Nxe4 4.d3 Nc5 5.fxe5 d5 6.d4 Ne6 7.Nf4 c5 8.Nc3 cxd4 9.Ncxd5 Nc6 10.Bd2 Nxf4 11.Nxf4 Nxe5 12.Bb5+ Bd7 13.Qe2 ...
1
I'm not sure about a world championship game, but genuine underpromotions do occur now and then in grandmaster games.
For a starting shot, here is the famous 2012 game with a knight promotion by Hikaru Nakamura. According to the FIDE rating website, Nakamura's *rating at the time was 2783 the month game was played. By "highest level," I took that ...
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