Daily Chess Improvement: Petrosian Tactic!

This tactic is from the former World Champion Tigran Petrosian vs Gocha Chachua, Tbilisi, 1945

White to move!

Comments
No. 1-2
Alena
Alena

V-2

1.Qe2 Ke8
2.Qh5+ Qf7
3.Rg8+ Kd7
4.Qxf7#

V-3

1.Qe2 Ke8
2.Qh5+ Kd7
3.Qf7+ Kd8
4.Rg8#

V-4

1.Qe2 Ke8
2.Qh5+ Kd8
3.Rg8+ Kd7
4.Qf7#

Alena
Alena

At first I thought about a pawn promotion, but it was wrong. Then I saw that the black king is surrounded.

1.Qe2 Qe7
2.Qh5+ Kf8
3.Qg6 Qxd6
4.exd6 any move
5.Qg8#

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