Games
[Event "Petersburg"]
[Site "?"]
[Date "1862.??.??"]
[Round "?"]
[White "Shumov, I.S."]
[Black "Petrov, A."]
[Result "1-0"]
[ECO "C77"]
[Annotator "MJDonnelly"]
[PlyCount "55"]
[SourceVersionDate "2022.06.06"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 Nxe4 {A relatively rare move in
the current position which is answered with a similarly uncommon move. By far
the most frequent move here is} (5... exd4 {with a representative continuation
being} 6. O-O Be7 7. Re1 b5 {Fressinet-Kramnik,Grand Prix du Senat Rapid 2002.}
) 6. dxe5 ({If} 6. O-O {then} b5 {would transpose to a hugely popular line
played at all levels including many of the current World's elite.}) 6... d5 (
6... Be7 {is also fully acceptable for Black as in Tregubov-Kovalev, Tal
Memorial Blitz Riga 2021.}) 7. O-O (7. exd6 {eases Black's development and
allows the generation of an active game via} Bxd6 8. O-O O-O 9. Re1 Bg4 {
Lebret-Roman, Paris-ch open 1988.} ({as well as} 9... b5 {Rohacek-Valent,
SVK-ch open Martin 1996.})) 7... Bc5 (7... b5 8. Bb3 Be6 {again transposes to
a very common line.}) 8. Bb3 (8. c3 {surprisingly led to a dynamic equilibrium
by sacrifice of the d5 pawn} O-O 9. Bb3 Bg4 10. Qxd5 Bxf3 11. gxf3 Qxd5 12.
Bxd5 Nxf2 {Lacina-Maxera, Tabor open 2005.}) 8... Be6 9. c3 O-O {Black has a
very decent game here but is now thrown off-course by White's next interesting
idea.} 10. Be3 (10. Nbd2 {is steadier but does nothing to disturbe Black's
comfortable game.}) 10... Bxe3 11. fxe3 {White has opened the f-file but at
the price of weak doubled pawns.} Ne7 {Whilst this is fine for Black there are
more emphatic moves to underline Black's advantage such as} (11... Re8 {
continuing development as does}) (11... Qe7 {since White cannot play} 12. Bxd5
{as Black wins with} Rad8 13. c4 Nxe5 14. Nxe5 Bxd5 15. cxd5 Qxe5) ({and there
is} 11... Nc5 {a typical idea in the Open Ruy Lopez chasing the important Bb3
and, in this case, with a view to targeting the e5 pawn with Nd7.}) 12. Nbd2
Nxd2 13. Qxd2 c6 {This is a little too solid as the d5 pawn is already secure.
The idea of then sending the knight to the king's side to attack e5 proves not
to be completely effective due to White's fine play.} (13... c5 {immediately
looks a more active move.}) 14. Bc2 Ng6 15. Qd4 Rc8 {Again this is not a
drastic error at all but playing for c5, a move that could have been played
for free earlier, takes time and allows White to build up forces on the
king's-side.} (15... Qc7 {is worth considering as an alternative.}) 16. Rf2 c5
17. Qd3 Qe7 (17... Qc7 {is again feasible with a few lines indicating the
position is about balanced and Black cannot take advantage of the doubled
pawns at present.} 18. Raf1 (18. a4 Rfd8 19. a5 Nf8) 18... b5 ({not of course}
18... Nxe5 19. Qxh7#)) (17... c4 18. Qd4) (17... Qb6 18. Rb1 Rfd8 (18... c4 19.
Qd4)) 18. Raf1 Rcd8 {Again not a real error but the rook has now recently
moved twice so perhaps} (18... Rfd8 {allowing for Nf8 is more natural when if
White continues as in the main game with} 19. h4 {then h6 keeps the knight
from g5.}) 19. h4 Bg4 (19... Rfe8 20. Ng5 {with pressure on f7 forces the
roook to return to f8 but not} (20. h5 Nf8 21. h6 g6 {and the attack has
stalled.})) 20. Ng5 f5 {The beginning of Black going downhill.} (20... c4 {
makes it anyones game after} 21. Qd4 Nxe5 22. Bxh7+ Kh8 23. Bc2 f6) 21. exf6
gxf6 $2 {Black collapses after this move. Necessary was} (21... Rxf6 {with
reasonble chances for Black as White has no clear continuation to improve the
position.}) 22. Nxh7 {Devastating the Black defences.} f5 (22... Qxh7 {fails to
} 23. Rxf6 Rxf6 24. Rxf6 Nf8 ({and} 24... Bh5 {to} 25. Qf5 {threatening Qg5.} (
25. Rxg6+ {is poor as Black is left with the better end-game following} Qxg6
26. Qxg6+ Bxg6 27. Bxg6)) 25. Rxf8+ {winning the Black queen.}) 23. Nxf8 Qxf8 (
23... Nxf8 {is no improvement due to} 24. Rxf5 Bxf5 25. Rxf5 Qxh4 26. Rf4 {
and White is a clear pawn up with the Black king also very exposed.}) 24. Rxf5
{Temporarily returning some material to lay open the Black king and hence win
even more.} Bxf5 25. Rxf5 Qe7 26. Rg5 Rd6 27. Rxg6+ Rxg6 28. Qxg6+ 1-0