(1) Study by V A Korolikov
CM #008 (Co-First Prize) "64", 1937
[White to play]

With three pawns ready to promote, White seems sure to win. But after

1.Rh5+
comes

1...Kg3!!
and Black can draw. [The main variation that Chernev gives is 1...Kxh5? which loses to 2.Nf4+ Kh6 3.g8N+ . Chernev gives the conclusion as 3...Kh7 4.Ngf6+ Kh6 5.Nxg4+ Kh7 6.Nef6+ Kg7 7.Ne6+ Kf7 8.d8N+ Ke7 9.c8N# and White ends with five knights on the board.]

2.Rh1
Chernev stops at this point without comment. Apparently he believes that this move stops Black from getting a queen and therefore White wins. But the position can be drawn as follows:

2...Be4! 3.g8Q
[Also drawing is 3.Nf4 Bxh1 4.Ne2+ Kf2 5.g8Q Kxe2 6.Qxg4+ Bf3 7.Qe6+ Be4 8.d8Q c1Q 9.Qg4+ Bf3 10.Qe6+ Be4= ; No better is 3.Nc3 Bxh1 4.g8Q (Or 4.d8Q c1N+!! (4...c1Q?? 5.Ne2+ ) 5.Ka1 Ncb3+ 6.Ka2 Nc1+ draw by perpetual check; But not 4.c8Q?? c1Q and Black has a forced mate: 5.Qb8+ Kh3 6.d8Q Qc2+ 7.Ka1 Qxc3+ 8.Ka2 Qc4+ 9.Ka1 Nb3+ 10.Qxb3+ Qxb3 11.Qd2 Bd5 12.Qh6+ Kg3 13.Qd2 Bd4+ 14.Qxd4 Qa2# )) 4...Bf3 5.Ne4+ Bxe4 6.d8Q c1Q transposes to our main line]

3...Bxh1 4.Nc3 Bf3 5.Ne4+!
[After 5.c8Q?! c1Q 6.Qb8+ Kg2 7.d8Q it is Black, despite the three White queens, who has the advantage! For example: 7...Qc2+ 8.Ka1 Qxc3+ 9.Ka2 Bb4 and White's position is dire, but he should be able to draw.]

5...Bxe4 6.d8Q c1Q
and now Black's threat to mate at b2 leads to

7.Qxg4+ Kxg4 8.c8Q+ Kf3 9.Qf6+ Ke2 10.Qg4+ Ke1 11.Qfh4+ Kf1 12.Qhh3+ Ke1 13.Qhh4+
etc. (Correction by Charles Sullivan, 2007) 1/2-1/2