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I played this very interesting game of the Caro-Kann Defense yesterday, in a line that I don’t think I’ve encountered before. It was the Gurgenidze Variation (1. e4 c6 2. d4 d5 3. Nc3 g6) where Black takes a Modern Defense type approach. Indeed, the position can be reached from the Modern Defense. I’m kind of proud of this game as I didn’t make a single inaccuracy or mistake according to the chess.com analytic engine (accuracy 95.0) and I saw a forced checkmate-in-6 at the end!

As an aside, the system is named after GM Bukhuti Gurgenidze (1933-2008), who was a multiple Georgian Chess Champion. He played this variation of the Caro-Kann and apparently because of it, 3. Nc3 by White fell out of favour in the 1970s!

When I was analysing the game, it was very curious how flexible, and thus complex, this system was for both White and Black. In the opening, there were often multiple options for every move, each which were very similar evaluation-wise at high depth when analysed by Stockfish. I suspect that my opponent might have been “freestyling” the opening as the main logic to (3… g6) is to fianchetto the bishop, which Black didn’t actually do. On move 8, they made a blunder from which they didn’t recover (8… e6). Simply, after (9. g4), their dark square bishop was trapped and after the trade sequence, they were forced to trade their bishop and pawn for one of my knights, and give me an advantage in material and development [+3].

With my advantage in development, I try to force some piece trades, and attack down the centre. On move 18, I had a very lovely double attack [+7.7] with (18. d5). My pawn attacked Black’s knight on c6 and I revealed a discovered attack along the long dark square diagonal by my bishop on Black’s rook on h8. Nice!

On move 21, with few options left, Black long castled, with their king exposed on the open c-file. At high depth Stockfish evaluates that checkmate is forced in no more than 13 moves. After (22. Rac1+ Nc7), I calculated a forced mate line in 6 moves! Admittedly, it’s not that hard to see, but I’m proud to have seen it in its entirely before playing the first move! Black was a good sport, and played to the end. GG!

The big takeaway from this game is to beware of trapping your bishop with your pawns, as occurred in this game!

Game on chess.com: https://www.chess.com/game/live/87898239607

[Event "Live Chess"]
[Site "Chess.com"]
[Date "2023.09.08"]
[Round "-"]
[White "vitualis"]
[Black "GM_MasterBeyter"]
[Result "1-0"]
[Timezone "UTC"]
[ECO "B15"]
[ECOUrl "https://www.chess.com/openings/Caro-Kann-Defense-Gurgenidze-System-4.Nf3"]
[UTCDate "2023.09.08"]
[UTCTime "07:50:09"]
[WhiteElo "1365"]
[BlackElo "1333"]
[TimeControl "900+10"]
[Termination "vitualis won by checkmate"]
[StartTime "07:50:09"]
[EndDate "2023.09.08"]
[EndTime "08:12:27"]
[Link "https://www.chess.com/game/live/87898239607"]
[WhiteUrl "https://images.chesscomfiles.com/uploads/v1/user/3711094.f52a0759.50x50o.ab18600a8723.png"]
[WhiteCountry "17"]
[WhiteTitle ""]
[BlackUrl "https://www.chess.com/bundles/web/images/noavatar_l.84a92436.gif"]
[BlackCountry "3"]
[BlackTitle ""]

1. e4 {[%clk 0:15:08.4]} 1... c6 {[%clk 0:14:57.5]} 2. d4 {[%clk 0:15:16.2]}
2... d5 {[%clk 0:14:50.5]} 3. Nc3 {[%clk 0:15:24.7]} 3... g6 {[%clk 0:14:43.1]
Caro-Kann Defense: Gurgenidze Variation [+0.5]} 4. Nf3 {[%clk 0:14:39][%c_arrow
e4e5;keyPressed;none;from;e4;opacity;0.8;to;e5;persistent;false,h2h4;keyPressed;none;from;h2;opacity;0.8;to;h4;persistent;false][%c_highlight
h4;keyPressed;shift;opacity;0.8;square;h4;persistent;false,e5;keyPressed;shift;opacity;0.8;square;e5;persistent;false]}
4... Bg4 {[%clk 0:14:30.2][%c_arrow
f8g7;keyPressed;none;from;f8;opacity;0.8;to;g7;persistent;false,d5e4;keyPressed;none;from;d5;opacity;0.8;to;e4;persistent;false][%c_highlight
g7;keyPressed;shift;opacity;0.8;square;g7;persistent;false,e4;keyPressed;shift;opacity;0.8;square;e4;persistent;false]}
5. exd5 {[%clk 0:14:12.5][%c_arrow
f1e2;keyPressed;none;from;f1;opacity;0.8;to;e2;persistent;false,h2h3;keyPressed;none;from;h2;opacity;0.8;to;h3;persistent;false,e2d3;keyPressed;none;from;e2;opacity;0.8;to;d3;persistent;false,c1e3;keyPressed;none;from;c1;opacity;0.8;to;e3;persistent;false,e3f4;keyPressed;none;from;e3;opacity;0.8;to;f4;persistent;false][%c_highlight
e2;keyPressed;shift;opacity;0.8;square;e2;persistent;false,h3;keyPressed;shift;opacity;0.8;square;h3;persistent;false,d3;keyPressed;shift;opacity;0.8;square;d3;persistent;false,f4;keyPressed;shift;opacity;0.8;square;f4;persistent;false,e3;keyPressed;shift;opacity;0.8;square;e3;persistent;false]}
5... cxd5 {[%clk 0:14:24.1]} 6. Qd3 {[%clk 0:13:53.4][%c_arrow
h2h3;keyPressed;none;from;h2;opacity;0.8;to;h3;persistent;false,c1e3;keyPressed;none;from;c1;opacity;0.8;to;e3;persistent;false][%c_highlight
h3;keyPressed;shift;opacity;0.8;square;h3;persistent;false,e3;keyPressed;shift;opacity;0.8;square;e3;persistent;false]}
6... a6 {[%clk 0:14:06.6]} 7. Ne5 {[%clk 0:13:30.8][%c_arrow
c1f4;keyPressed;none;from;c1;opacity;0.8;to;f4;persistent;false][%c_highlight
f4;keyPressed;shift;opacity;0.8;square;f4;persistent;false] A somewhat
provocative move, which was the second best move in this position [0.00].
Stockfish prefers development first with Bf4.} 7... Bf5 {[%clk 0:13:32]} 8. Qe2
{[%clk 0:12:42][%c_arrow
d3d1;keyPressed;none;from;d3;opacity;0.8;to;d1;persistent;false,d3f3;keyPressed;none;from;d3;opacity;0.8;to;f3;persistent;false][%c_highlight
d1;keyPressed;shift;opacity;0.8;square;d1;persistent;false,f3;keyPressed;shift;opacity;0.8;square;f3;persistent;false]}
8... e6 $4 {[%clk 0:13:04.6][%c_effect
e6;square;e6;type;Blunder;persistent;true][%c_arrow
h7h5;keyPressed;none;from;h7;opacity;0.8;to;h5;persistent;false][%c_highlight
h5;keyPressed;none;opacity;0.8;square;h5;persistent;false] A blunder as Black's
bishop is trapped [+3]} 9. g4 $1 {[%clk 0:12:40][%c_effect
g4;square;g4;type;GreatFind;persistent;true]} 9... Be4 {[%clk 0:12:58.9]} 10.
Nxe4 {[%clk 0:12:09.5]} 10... dxe4 {[%clk 0:13:06.3]} 11. Qxe4 {[%clk
0:12:11.4]} 11... Qa5+ $6 {[%clk 0:12:37.8][%c_effect
a5;square;a5;type;Inaccuracy;persistent;true][%c_arrow
a8a7;keyPressed;none;from;a8;opacity;0.8;to;a7;persistent;false,d8d5;keyPressed;none;from;d8;opacity;0.8;to;d5;persistent;false][%c_highlight
a7;keyPressed;none;opacity;0.8;square;a7;persistent;false,d5;keyPressed;none;opacity;0.8;square;d5;persistent;false]
An inaccuracy [+3.8]. The engine recommends Ra7 to defend the b-pawn, or Qd5 to
force a trade of queens.} 12. c3 {[%clk 0:11:51.6]} 12... Bb4 $2 {[%clk
0:11:59.2][%c_effect b4;square;b4;type;Mistake;persistent;true][%c_arrow
a5d5;keyPressed;none;from;a5;opacity;0.8;to;d5;persistent;false][%c_highlight
d5;keyPressed;none;opacity;0.8;square;d5;persistent;false] An escalating mistake
[+6.6]. Black needs to trade their queen for my strong queen to blunt my
attack.} 13. Bd2 {[%clk 0:11:07.9][%c_arrow
e4b7;keyPressed;none;from;e4;opacity;0.8;to;b7;persistent;false][%c_highlight
b7;keyPressed;shift;opacity;0.8;square;b7;persistent;false] I didn't want Black
infiltrating with an attack so opted to play more conservatively. Stockfish,
however, was unafraid and suggested the immediate Qxb7, which threatens a
checkmate threat (Qd7+ and then Qxf7#).} 13... Bxc3 {[%clk 0:11:11.3][%c_arrow
b4e7;keyPressed;none;from;b4;opacity;0.8;to;e7;persistent;false,a5d5;keyPressed;none;from;a5;opacity;0.8;to;d5;persistent;false][%c_highlight
e7;keyPressed;shift;opacity;0.8;square;e7;persistent;false,d5;keyPressed;shift;opacity;0.8;square;d5;persistent;false]
Black decides to force a trade, which the engine thinks is \"fine\", but makes
it easier for me as Black no longer has an attack} 14. Bxc3 {[%clk 0:11:11.8]}
14... Qc7 {[%clk 0:11:17]} 15. g5 {[%clk 0:09:54.8]} 15... Ne7 {[%clk
0:11:09.8]} 16. Bg2 {[%clk 0:09:43]} 16... Nbc6 {[%clk 0:11:03.8]} 17. Nxc6
{[%clk 0:09:33.7]} 17... Nxc6 {[%clk 0:10:59.9]} 18. d5 {[%clk 0:09:42.8] Double
attack $1 [+7.7] The pawn advance threatens the knight and a discovered attack on
the rook on h8 $1} 18... Ne7 {[%clk 0:10:36.8]} 19. Bxh8 {[%clk 0:09:36.3]} 19...
Nxd5 {[%clk 0:10:02.1]} 20. O-O {[%clk 0:08:38.2] My king is now out of the
centre and safe - I'm comfortably winning in this position $1} 20... Qa5 {[%clk
0:09:22.6]} 21. a3 {[%clk 0:08:08.9]} 21... O-O-O {[%clk 0:09:23] With few
options left, Black castles the other side, but with their king exposed on the
full open c-file. I was fairly sure that there was a mating net available. At
high depth, Stockfish finds forced checkmate in no more than [+M13].} 22. Rac1+
{[%clk 0:07:43.6]} 22... Nc7 {[%clk 0:09:06.2] [+M6] At this point, I actually
calculated a forced mate line. Admittedly, it's not that hard to see, but I'm
proud to have seen it in its entirely before playing the first move $1} 23. Qxb7+
{[%clk 0:07:30.9]} 23... Kd7 {[%clk 0:09:11.6]} 24. Rfd1+ {[%clk 0:07:27.2]}
24... Ke8 {[%clk 0:09:14.4]} 25. Qc6+ {[%clk 0:07:12.4]} 25... Ke7 {[%clk
0:09:18.5]} 26. Bf6+ {[%clk 0:07:19.6]} 26... Kf8 {[%clk 0:09:25.2]} 27. Rxd8+
{[%clk 0:07:25.2]} 27... Ne8 {[%clk 0:09:33.5]} 28. Qxe8# {[%clk
0:07:32.7][%c_effect g1;square;g1;type;Winner,f8;square;f8;type;CheckmateBlack]
And that's a GG $1} 1-0