Spassky's opponent in the following game finished last with a score of 5-14.
As an indication of how strong this tournament was Chessmetrics estimates Osnos' highest rating to have been 2656 on the October 1969 rating list, placing him at 26th in the world.
Soviet IM Vyacheslav Osnos (July 24, 1935 - August 27, 2009) was a prominent trainer and author who competed in six Soviet championship finals from 1963 to 1968.
Between 1968 and 1974 he was one of Viktor Korchnoi's seconds and in 1974 he was awarded the title of Honored Trainer of the Russian SFSR. Osnos assisted Korchnoi during his narrowly lost World Championship Candidate's final match against Anatoly Karpov in Moscow 1974. He won the championship of Leningrad in 1971 and 1980.
The weapon Spassky used was one of my favorite openings, the Torre Attack. In the Torre white develops his dark squared Bishop actively outside the Pawn chain and aims for an attack on the K-side.
The downside is that the Torre Attack doesn’t create any early Pawn tension in the center and so black has many options against it. What that means is that if you are going to play the Torre, you will have to be familiar with the correct strategy to use against any number of black setups. Nevertheless, white can often develop a very dangerous attack as Spassky does here.
Boris Spassky–Vyacheslav Osnos1–0A46USSR Champ, Leningrad1963Stockfish 15
Torre Attack 1.d4 f6 2.f3 e6 3.g5 The Torre Attack came into being in
1925, when the young Mexican star Carlos Torre used it at the top level
important international tournament in Moscow. The opening is a harmonious
system of development where white pins the N nd then establishes the Pawn
wedge c3-d4-c3. This setup allows white to develop harmoniously, has great
flexibility and offers white good attacking potential. What it is NOT, as some
authors have suggested, is a "system" in which white can play a set strategy
regardless of white black does. White's strategy will depend on what type of
formation black chooses. c5 4.e3 b6 This counterattacking move is the most
critical test of the Torre. Positionally the idea is that white has left his
b-Pawn undefended. Additionally, the Q puts pressure on the d4 Pawn, which
might be reinforced by ...Nc6. On the other hand, this early attack on the
Q-side has caused black to delay castling. 5.bd2 This is white's most
critical reply in which he offers the b-Pawn in the hopes that by attacking
the Q white will win several tempi for developing his pieces and thereby
generate a dangerous initiative as compensation. A sharp fight is looming. xb2 Black can decline the gambit P and develop his pieces beginning with 5...
d5 or he can play 5...Nc6 6.d3 This is not the only method of trying to
secure compensation for the P. Another method is 6.Bxf6 gxf6 and now 7.Bd3
transposes into the main line, but white could also play 7.Be2 which requires
a completely different strategy. cxd4 6...c6 7.0-0 b6 8.c4 d8 9.e4 b5 10.ce5 c4 11.e2 e7 12.xf6 gxf6 13.xc6 dxc6 14.a4 a6 15.d5 cxd5 16.exd5 xd5 17.axb5 xb5 18.d4 c5 19.f3 a7 20.c3 d7 21.g4 Dreev,A
(2697)-Onischuk,A (2650) Poikovsky 2006 ½-½ (51) 7.exd4 7.xf6 gxf6 8.exd4 b6 9.0-0 is equal and the players agreed to a draw after a handful
more moves. Reinderman,D (2565)-Solleveld,M (2485) Haarlem 2009 7.b1
This was a recommendation of GM Eduard Gufeld. He deemed taking the a-Pawn to
be too risky and suggested 7...Qc3 xa2 8.c4 b5 9.a1 xa1 10.xa1 bxc4 11.xc4 b4+ and black may or may not have sufficient compensation for his
Q! Stockfish evaluates the position as equal whereas Komodo 14 favors white by
about a P. 7...c3 This is just one of many alternatives that have been
tried here. 7...d5 8.xf6 gxf6 9.0-0 c6 10.c4 c3 is equal, but
difficult to play. In Zierke,O (2294)-Bodnar,A (2398) Hamburg 2006 black lost
in a mere 20 moves. 7...e7 This looks rock solid. So how did black
manage to lose in 13 moves? Watch. 8.c4 b4+ 9.c3 xc3+ 10.f1 So far,
so good. Now after 10...b5 white would stand only slightly better. Instead,
black logically gets castled, but there's a fly in the ointment. 0-0 11.c1 b4 12.b1 c3 Perhaps white will take the draw by repitition. 13.b3
Trapping the Q so black resigned. Belenov,D (2338)-Kutlaev,M (2238) Nizhnij
Novgorod 2008 8.0-0 Natural, but it also contains a trap that
black must be alert to. d5 It's vital that the c4 square is denied to
white's N. 8...e7 9.c4 b4 9...d5 10.d2 traps the Q 9...b5 10.d2 Again, the Q is trapped. 10.c3 b5 11.d6+ wins the Q 9.e1 9.b1 lacks punch. e7 10.b3 c7 9...e7 10.e3 This R lift prepares the
R for action on the K-side. 10.b3 is an alternative, but less direct that
Spassky's move. c7 11.e5 c6 12.c1 0-0 13.c4 with a sharp position. 10...c7 Threatens to win with ...Ng4. 11.e5 Besides meeting the threat
of 1 ...Ng4, this clears the way for the R to get into the action. 11.b1
A pass to demonstrate black's threat. g4 12.e5 12.e1 xg5 12.xe7 xe3 13.fxe3 xe7 Black is better; he has a R+P for a N 12...xe3 13.xe3 Black is better; he has a R+P for a N. 11...c6 12.c3 xe5 While this
eliminates the well placed N it also gives white the advantage. 12...d7 13.b1 h5 Intending ...Ng5 14.e1 14.h3 This fails to thwart black's
intentions. g4 Anyway! 15.hxg4 xg5 16.h3 xe5 17.dxe5 f4 with an
excellent position. 14...g4 15.xe7 xe7 16.df3 with equal chances. 13.dxe5 g8 It's probable that Osnos was expecting simplification after 14.
Bxe7, but Spassky has a surprise. 13...d7 14.xe7 xe7 15.h5 is simply
too risky for black. 14.f3 Clever. Spassky wants to make use of the
capture on g5 to save a tempo. h6 14...xg5 15.xg5 Black has no really
good defense to the attack on f7. d7 15...h6 16.xf7 xf7 17.h5+ g6 17...e7 18.g5+ f7 19.g3 White is winning. 18.xg6+ and white is
clearly better. 15.f4 d7 16.d4 g5 While not losing, this
does not work out well. After 16...Bc5 the position would have been about
equal. 17.xg5 hxg5 18.g4 xc3 This is too risky, but a defensive move
like 18...Qd8 does not look especially promising. White has let this P go
because it was impossible to defend it anyway and now the open c-file
discourages Q-side castling. 19.b3 This renews the threat to capture on g5
and at the same time defends the R. h6 A bad square for the N! 19...e7
This was his best move, but even so, his position is not very promising. 20.xg5 b4 21.xg7 h4 22.h3 g8 23.f6 xf6 24.exf6 g6 White is clearly
better. 20.xg5 b4 Osnos plans on the transfer of his Q with the hope of
defending the K-side. 21.g3 This prevents ...Qg4. White could have played
21.Qxg7 but black can slip away with 21...O-O-O or he can try to defend with
21...Qf8 22.Qg5 (White should avoid trading Qs) Rg8. In either case white
retains excellent chances. f8 Black has succeeded in getting his Q back to
the defense, but now he loses quickly because this move fails to meet n even
greater danger. 21...c8 was necessary. 22.xg7 f8 23.f6 f5 24.xf5 exf5 25.d1 c6 26.e6 fxe6 27.d4 b6 Black has warded off the tactical
threats, but is left with a positionally inferior game. 22.c1 This is a
very instructive move! There are no concrete threats so Spassky develops
another piece and at the same time keeps the K in the center. f6 23.e3 23.xg7 xg7 24.xg7 fxe5 25.c7 c8 26.c5 is also quite hopeless for black. 23...f5 24.c5 f4 Overlooking a tactical shot, but black is lost anyway. 24...e7 25.xb7 f8 26.c7 c8 27.xc8+ xc8 28.d6 d7 29.xa7 etc. 25.g6+ e7 26.a3 Black resigned. 26.a3 b5 26...d8 27.xb7# 27.xb7+ d7 28.gc3 c4 28...xa3 29.c7# 29.xc4 dxc4 30.c5+ It's mate
in 5 regardless of what black playes. c8 30...d8 31.xe6+ c8 32.a6+ d7 33.d1+ mate in 2 31.a6+ d8 32.d1+ d6 33.xe6+ d7 34.xd6+ c8 35.c7# 1–0
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