Sergash: Carlsen was 12 years old for this game, while Denis Wallin was 16 years old, being born in October of 1985 (the tournament was held in March of 2002). Interestingly, https://chess-db.com/public/pinfo.j... mentions that the top rating ever achieved by Wallin was 2192 in... April 2001! Which means that Wallin reached his peak at 14 years old and so far never ever passed it! I suppose he went on to doing something else than play chess...
In Chessbase, Carlsen was rated 2127, while Walling was 2125.
<2.Nb1-c3 Nb8-c6 3.Ng1-f3 g7-g6 4.Bf1-b5 Bf8-g7 5.0-0 Ng8-f6 6.e4-e5 Nf6-g4 7.Bb5xc6! d7xc6 8.Qd1-e2 0-0 9.d2-d3 Ng4-h6! 10,Nc3-e4 b7-b6= / ⩲> According to my research in Chessbase, that was the first time Carlsen played that move. Until then, he had always played 2.Ng1-f3, with which he achieved limited success and to which Black had opposed various moves, in their order of appearance:
A) 2...Nb8-c6 3.d2-d4 c5xd4 4.Nf3xd4 e7-e5 (4...Ng8-f6 5.Nb1-c3 e7-e5 6.Nd4-b5 d7-d6 7.Bc1-g5 a7-a6 8.Nb5-a3 b7-b5 9.Bg5xf6 g7xf6! 10.Nc3-d5 f6-f5 11.Bf1-d3 Bc8-e6 12.0-0 Bf8-g7 ⩲ Carlsen vs Y Miellet-Bensan, 2001, 0-1) 5.Nd4-b5 d7-d6 6.Nb1-c3 a7-a6 7.Nb5-a3 b7-b5 8.Nc3-d5 Ng8-e7 9.c2-c4 Nc6-d4 10.c4xb5 Ne7xd5! 11.e4xd5 Bc8-d7 12.Bc1-e3 a6xb5 13.Be3xd4 e5xd4 14.Qd1xd4? Bf8-e7! ⩱ Carlsen vs J A Nilssen, 2001, 0-1.
B) 2...e7-e6 3.d2-d4 c5xd4 4.Nf3xd4 and then
B1) 4...Ng8-f6 5.Nb1-c3 Qd8-b6?! 6.Nd4-b3?! Bf8-b4 7.Bf1-d3 d7-d6 8.0-0 Bb4xc3! 9.b2xc3 e6-e5 10.h2-h3 0-0 11.Bc1-e3 Qb6-c6 12.Qd1-f3 Qc6xc3 ⩱ Carlsen vs E Vegh, 2001, 0-1;
B2) 4...a7-a6 5.Nb1-c3 (Carlsen later played 5.Bf1-d3 Qd8-c7 (5...Qd8-b6 6.Nd4-b3 Qb6-c7 7.0-0 Ng8-f6 8.Nb1-c3 b7-b5 9.Qd1-e2 d7-d6 10.f2-f4 Nb7-d7 11.Bc1-d2 b5-b4?! 12.Nc3-d1! Bc8-b7 ± Carlsen vs G Wachinger, 2001, draw) 6.0-0 d7-d6 7.Bc1-e3 Ng8-f6 8.Nb1-c3 b7-b5 9.a2-a3 Bc8-b7 10.f2-f4 Nb8-d7
11.Nd4-b3 Bf8-e7 12.Kg1-h1 e6-e5 13.f4xe5 Nd7xe5?! 14.Nb3-d4! ± Carlsen vs P Scheffknecht, 2001, 1-0) b7-b5 6.Bf1-d3 Qd8-b6 7.Bc1-e3 Bf8-c5! 8.Nc3-e2 Ng8-f6 9.0-0 Nf6-g4 10.Bc1-d2! e6-e5? 11.b2-b4! Bc5xd4 12.Ne2xd4 Ng4xf2! 13.Rf1xf2 Qb6xd4 ± Carlsen vs A Caoili, 2001, draw.
C) 2...Ng8-f6 3.Nb1-c3 d7-d5 4.e4xd5 Nf6xd5 5.Bf1-b5+ Bc8-d7! 6.Nf3-e5 Bd7xb5 7.Qd1-f3! f7-f6 8.Nc3xb5 Nb8-a6 9.Qf3-h5+! g7-g6 10.Ne5xg6! h7xg6 11.Qh5xh8 Qd8-d7! 12.Nb5-c3 Qd7-e6+ 13.Ke1-f1! Na6-b4 ⩲ Carlsen vs H Runde, 2002, 1-0.
D) 2...d7-d6 3.Nb1-c3 Nb8-c6 4.d2-d4 c5xd4 5.Nf3xd4 Nc6xd4?! 6.Qd1xd4 a7-a6 7.Bc1-g5!? Qd8-a5?! 8.f2-f4?! e7-e5! 9.Qd4-d2? f7-f6?! 10.Bg5-h4 Bc8-e6! 11.f4-f5 Be6-f7 12.Bh4-f2 Ng8-e7 ⩲ Carlsen vs Anders Bekker-Jensen, 2002, 1-0.