Harkov theme
The try is defeated by at least two black moves which become defences in variations after the key.
Scheme:
1.X? a!/b!
1.Y a 2.A, 1…b 2.B
Harkov 2 theme
The refutation of the first try is a variation in two other phases.
Scheme:
1.X? a!
1.Y a 2.A
1.Z a 2.B
Mażul, Waldemar
Probleemblad, 1998
2nd honourable mention
mate in 2 moves
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