Toronto Chess News

14
Game 4: An exciting draw that saw the advantage swing back and forth. It was the
longest game at that point, at 6 hours. Here is the game (Annotations by Bob Armstrong,
using Fritz):
Anand, Viswanathan (2775) - Carlsen, Magnus (2870) [C67]
2013 World Chess Championship (4), 13.11.2013
1.e4² [0.58 (by reverse projection) Both engines and humans are somewhat divided on whether
the evaluation of this position is = or +/=. The engine I am using opts for +/=, as did the engine I
used before this. So I will follow my engines' lead, and agree to +/=. It is numerically calculated as
0.58 in this opening. Although logical consistency would demand that 1.e4 be the same valuation
regardless of the defence used, this is not yet totally confirmed by me. It is dependent on time
available for further research.]
[1.d4² 0.32 (by reverse projection) 1...d5² 0.32 (verified depth 25) 2.Nf3² 0.32 (depth 25) (2.c4?!=
0.29 (depth 25)) ]
1...e5 [0.58 (verified depth 25)]
2.Nf3 [2.d4?! exd4 3.Nf3 Nc6 4.Nxd4 Nf6=]
2...Nc6 [2...Nf6 3.Nxe5 d6 4.Nf3 Nxe4²]
3.Bb5 Nf6 4.0–0 [0.33 (verified depth 23)]
4...Nxe4 [(depth 23)]
[4...Bc5² 5.Nxe5 Nxe4 (5...Nxe5 6.d4 a6 7.Be2 Bxd4 8.Qxd4²) 6.Qe2 (6.Qe1 f5 7.Bxc6 dxc6 8.d3
Qe7 9.Nf3 (9.dxe4 Qxe5 10.exf5 Qxe1 11.Rxe1+ Kf7²) 9...Nf6²) 6...Nxe5 7.Qxe4 Qe7²; 4...Bd6
5.d4 Qe7²]
5.d4 [5.Re1?! Nd6 6.Nxe5 (6.Bf1 Be7=) 6...Be7=]
5...Nd6 [5...exd4 6.Re1 d5² (6...f5?!±) ]
6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ [8.Qe2 Nd4 9.Nxd4 Qxd4²]
8...Kxd8 9.h3 Bd7 10.Rd1 Be7 11.Nc3 Kc8?!± [Vishy gets a "clear" advantage]
[11...Ke8 12.g3 h5²]
12.Bg5 h6 13.Bxe7 Nxe7 14.Rd2?!² [14.a4 c5 15.a5 Bc6±]
14...c5 15.Rad1 Be6 16.Ne1?!= [Vishy has lost his advantage]
[16.Kh2 b6 17.Ne4 Kb7²]
16...Ng6 17.Nd3 [17.Ne4 b6 18.Nf3 Kb7=]
17...b6 18.Ne2?!³ [it appears that this was a deliberate P-sac by Vishy to gain the initiative; but
for the first time in the game, Magnus gets the advantage because of it. It may be an unsound
sac.]
[18.b3 Kb7 19.f4 c4=]
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