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Magnus Carlsen vs Kristian Trygstad
NOR-chT final (2002), Oslo NOR, rd 4, May-11
King's Indian Defense: Fianchetto Variation. Classical Fianchetto (E67)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Nov-06-11  iamdeafzed: 41.) e6+, forking both the king and bishop. I assume that's why black resigned at least.

Also, 34.) Qxg7 was an excellent move that solved one of Magnus' main problems in this game: black's passed c pawn. Great play by Magnus.

Feb-18-12  iamdeafzed: Ah, yes 41.)e6+ is the decisive refutation:

...41.)Bxe6
42.)dxe6+, Kxe6
43.)Bh3+
Followed by Bxc8, and white is very clearly won

Other alternatives for black's 41st move don't look much better.

Dec-27-14  lennard0815: How about 41. d6 followed by 42. Rf2+ or immediately 41. Rf2+ ?

magnus is a beast :)

Aug-29-21
Premium Chessgames Member
  Sergash: Kristian Trygstad is a Norwegian FIDE master, born on August 11 1978, so he was 23 years old at the time of this game. Carlsen was 11 years old and a chess Expert.

<6.d2-d4!> Probably the best move, so Carlsen possibly had studied his previous game with this position? In that previous game, played that same year, Carlsen had played 6.Nb1-c3 e7-e5 7.d2-d3 Nb8-c6 8.Ra1-b1 a7-a5 9.a2-a3 h7-h6 10.b2-b4 a5xb4 11.a3xb4 Bc8-e6 12.b4-b5 Nc6-e7 13.Nf3-d2 Qd8-c8 14.Rf1-e1 Be6-h3 15.Bg2-h1 Nf6-g4 16.Nc3-d5 Ne7xd5 17.c4xd5?! f7-f5 18.Qd1-c2 Qc8-d8?! 19.b5-b6 c7xb6 = Carlsen vs D Kedyk, 2002, draw.

<6...Nb8-d7 7.Nb1-c3 e7-e5 8.e2-e4 a7-a6 ⩲> The most played move. The computer (Stockfish 14 AVX2 64 bits) prefers the attack on the centre with 6...c7-c5 by transposition Maroczy vs S Landau, 1930, 1-0; and also the development of the bishop 6...Bc8-f5 (A Selezniev vs Euwe, 1923, 1-0).

<9.Rf1-e1 e5xd4 10.Nf3xd4 ⩲> The most played move here, historically speaking, has been 9.h2-h3 ⩲ R.F. Streater vs. Alan Phillips, Great Britain Championship 1954 in Nottingham, round 9, 0-1.

<10...Rf8-e8?! ±> Trygstad doesn't seem prepared enough in the opening. More precise seems 10...Nd7-e5! 11.b2-b3 c7-c5 ⩲ M Vukic vs A Planinc, 1976, 1-0.

<11.f2-f3? Ra8-b8 => Shutting down the white bishop on g2 is not a good idea. 11.b2-b3! ± Δ Bc1-b2 Goran Dizdar (2490) vs. Zoran Ilic, 40th Yugoslavia Team Championship 1988 in Brezovica, draw.

<12.Nd4-e2N? Nd7-e5! 13.b2-b3 ∓> A new move and a second consecutive serious mistake, showing that White doesn't possibly understand this position well. Several moves are playable here that maintain equality:

A- 12.b2-b3 = with a possible Bc1-b2. Sudhir Kumar Sinha (2168) vs. Andika Pitra (2303), Kuala Lumpur Open (Malaysia) 2011, round 8, 0-1.

B- 12.a2-a4 = Pascal Flierl (2241) vs Martin Krockenberger (2208), League Germany BL2-Süd 07-08 2007, Schwegenheim vs Schmiden Cannstatt, round 3.6, 1-0.

C- 12.f3-f4 = Rita Zykiene vs Renata Turauskiene (2200), Lithuania Women Champonship 1996 in Marijampole, round 10, 1-0.

Sep-02-21
Premium Chessgames Member
  Sergash: <13...c7-c5?? 14.a2-a4! ±> Missing the opportunity offered by Carlsen's last move : 13...b7-b5! 14.c4xb5 a6xb5 ∓ Stockfish 14 AVX2 64 bits.

<14...Ne5-c6 ±> Better to develop a new piece: 14...Bc8-e6 15.Ra1-b1 ± Δ Nf6-d7 and Ne5-c6 for Black. Stockfish 14 AVX2 64 bits.

<15.Bc1-e3 ±> 15.Bc1-f4!? ± Stockfish 14 AVX2 64 bits.

<15...Nc6-b4?! 16.Qd1-d2 ±> Again, 15...Bc8-e6 16.h2-h3 ± planning a future f3-f4 while retaining control of g4. Stockfish 14 AVX2 64 bits.

<16...Bc8-e6?! +-> Curiously, the bishop move is not commendable anymore! 16...Nf6-d7! 17.Ra1-d1! ± Stockfish 14 AVX2 64 bits.

<17.Ra1-d1 ±> More precise appears to move the other rook on that square 17.Re1-d1! +- Δ Ra1-b1. Stockfish 14 AVX2 64 bits.

<17...Qd8-b6 ±> 17...Nf6-d7! 18.f3-f4! f7-f5! 19,Be3-f2! ± with still a very difficult game for Black. Stockfish 14 AVX2 64 bits.

<18.Be3-f2?! ±> Possibly played to threaten d6, as if now 18.Qd2xd6? Qb6xd6 19.Rd1xd6 Nb4-c2, after which the computer recommends 20.Kg1-f2 = Stockfish 14 AVX2 64 bits. But better is 18.h2-h3! ± Δ f3-f4 Stockfish 14 AVX2 64 bits.

<18...Rb8-d8?! ±> This position seems really difficult to grasp! Better are 18...Nf6-d7! 19.f3-f4 (or 19.Qd2xd6 Qb6-a5! ± Stockfish 14 AVX2 64 bits) Nb4-c6! ± attacking b3. Stockfish 14 AVX2 64 bits; or 18...Nb4-c6! 19.Rd1-b1 or 19.Qd2-c2 ± Stockfish 14 AVX2 64 bits.

<19.Ne2-f4 ±> There is also other moves, which might be objectively better:

A) 19.g2-g4!? Nb4-c6 20.Rd1-b1 Qb6-a5! ± Stockfish 14 AVX2 64 bits.

B) 19.Re1-f1 ± Stockfish 14 AVX2 64 bits.

C) 19.h2-h3 ± Stockfish 14 AVX2 64 bits.

Sep-05-21
Premium Chessgames Member
  Sergash: <19...Be6-c8?! ±> Again, the computer prefers either 19...Nf6-d7! 20.Kg1-h1! ± Stockfish 14 AVX2 64 bits; or 19...Nb4-c6! 20.Rd1-b1! Qb6-a5 ± Stockfish 14 AVX2 64 bits.

<20.Rd1-b1 ±> Possible improvement : 20.Bf2-e3 Bc8-e6 21.Kg1-h1 or 21.Rd1-b1 ± Stockfish 14 AVX2 64 bits; also there is 20.Re1-f1 Nb4-c6 21.Rd1-b1 ± Stockfish 14 AVX2 64 bits.

<20...Qb6-c7 ±> Better seems 20...Bc8-d7 ± Stockfish 14 AVX2 64 bits.

<21.g3-g4 ±> Now that the b3 pawn cannot be attacked by the queen: 21.Rb1-d1! ± Stockfish 14 AVX2 64 bits.

<21...g6-g5!? ±> White has a big advantage, but apparently not enough to consider this game as a win yet. Black shouldn't get too excited and try anything so agressive that would change the nature of the position. Here Trygstad is apparently trying to force the trade of a few pieces, but the simple 21...h7-h6! 22.Kg1-h1 Bc8-d7 ± would have been enough. Stockfish 14 AVX2 64 bits.

<22.Nf4-d5?! Nb4xd5 23.Nc3xd5 Nf6xd5▢ ⩲> 22.Nf4-e2! h7-h6 23.h2-h3 ± Stockfish 14 AVX2 64 bits.

<24.c4xd5?! ⩲> Better is 24.e4xd5! h7-h6! (24...Re8xe1+ 25.Rb1xe1 ± Stockfish 14 AVX2 64 bits; or also 24...Bg7-f6 25.Bg2-f1! ⩲ Stockfish 14 AVX2 64 bits) 25.h2-h4! ± Stockfish 14 AVX2 64 bits.

<24...h7-h6?! 25.a4-a5 ⩲> 24...Qe7-c7! 25.Bf2-e3 h7-h6 26.a4-a5 ⩲ Stockfish 14 AVX2 64 bits.

<25...Bc8-d7? 26.h2-h4! g5xh4 27.Bf2xh4 Rd8-b8 ±> This move cuts the black queen from the king-side. 25...Qc7-e7 26.Re1-c1! Bc8-d7▢ 27.b3-b4! ⩲ Stockfish 14 AVX2 64 bits.

<28.g4-g5?? => Losing any existing advantage! White seems to get a winning advantage after 28.Bg2-f1! b7-b6 29.Qd2-f4! +- Stockfish 14 AVX2 64 bits; and also after the immediate 28.Qd2-f4! Re8-e5 +- Stockfish 14 AVX2 64 bits.

Sep-05-21
Premium Chessgames Member
  Sergash: <28...h6xg5 ⩲> 28...Qc7-d8! = Stockfish 14 AVX2 64 bits.

<29.Qd2xg5 => 29.Bh4xg5! ⩲ Stockfish 14 AVX2 64 bits.

<29...c5-c4?? 30.f3-f4! +-> Losing the game! 29...Re8-e5▢ 30.Qg5-g3 Kg8-h7▢ 31.Bh4-g5 Re5xg5▢ 32.Qg3xg5 Bg7-d4+▢ 33.Kg1-h1▢ Rb8-g8▢ 34.Qg5-e7▢ Rg8-g6 (or 34...Qc7-d8 = Stockfish 14 AVX2 64 bits; also 34...Qc7-c8 = Stockfish 14 AVX2 64 bits) = Stockfish 14 AVX2 64 bits.

<30...c4-c3 +-> Also, 30...Qc7xa5 31.Re1-e3! +- Stockfish 14 AVX2 64 bits.

<31.Re1-e3 Qc7-c5 32.Bh4-f2▢ +-> Even stronger is 31.Rb1-c1! Rb8-c8 32.Kg1-h2 +- Stockfish 14 AVX2 64 bits.

<32...c3-c2 33.Rb1-c1▢ f7-f6 +-> Also, 32...f7-f6 33.Qg5-g6 Re8-e7 34.Re3-g3 Qc5-b4 35.Rb1-c1 +- Stockfish 14 AVX2 64 bits.

<34.Qg5xg7+ Kg8xg7 35.Re3-g3+ Kg7-f7 36.Bf2xc5 d6xc5 37.Rc1xc2 b7-b6 38.a5xb6 +-> Objectively speaking, better is 34.Qg5-g6! +- Stockfish 14 AVX2 64 bits. But trading the queens to enter an ending up by 2 pawns is very human!

<38...Re8-c8 39.e4-e5! f6xe5 40.f4xe5 Rb8xe6 +-> Or 38...Rb8xb6 39.Rc2xc5 +- Stockfish 14 AVX2 64 bits.

In the end Trygstad possibly played the last move to reach the time control, and then realized White could play 41.e5-e6+ winning a piece.

But there is even better, a mate in 9 moves starting with 41.Rc2-f2+! Kf7-e8 42.Rg3-g8+ Ke8-e7 43.Rg8-g7+ Ke7-d8 44.d5-d6 and mate 5 moves later...

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