Keres completely bungles this ending. He concludes that Black's two knights can draw and he misses several twists along the way.
1.Qe6?
[The text is an error. White has a mate in forty-two beginning with 1.Qc7
Ne7
2.Qb7
Nfd5
3.Kf3
Kf7
4.Qb3
Ke6
5.Ke4
Kd6
6.Qa3+
Ke6
7.Qh3+
Kd6
8.Qh6+
Kc5
9.Qf8
Kd6
10.Kd4
Ke6
11.Qh6+
Nf6
12.Qe3+
Kd7
13.Qd2
Kd6
14.Qb4+
Ke6
15.Qb6+
Kf5
16.Qb5+
Ke6
17.Qe2+
Kf7
18.Qc4+
Ke8
19.Ke5
Nd7+
20.Kd6
Nf8
21.Qe4
Nfg6
22.Qe6
Kf8
23.Kd7
Kg7
24.Ke8
Kh6
25.Kf7
Kg5
26.Qe4
Nf5
27.Qg2+
Kf4
28.Qxg6
Ke4
29.Ke6
Ke3
30.Kxf5
]
1...Kg7
2.Kf3
Nh7?
This is a losing move. Keres actually discusses one of the two drawing moves but decides the text-move is better. [Keres examines 2...Nh8!
3.Kf4
Nf7
4.Qc6!
but does not realize that that 4...Nh7!
would keep the draw in hand for Black.; The other drawing move is 2...Ng8
]
3.Kg4!
[Once again, White is winning. Keres looks at 3.Qd7+!
but doesn't realize that it also wins.]
3...Nhf8
4.Qd6
Kf7
5.Qd5+
Kg7
6.Qd4+
Kf7
7.Kf5?
[And here Keres completely overlooks that 7.Qc4+!
is mate in 31; and so is 7.Qd5+!
; The third and last winning move is 7.Qf2+!
with mate in 32.]
7...Ne7+
8.Ke4
Nfg6
and Keres concludes that White "has achieved nothing." 1/2-1/2