Scenario 2 - Wrong play
If North plays the ♥2 on the first trick, Declarer's ♥Q will win the trick. Next Declarer will lead his ♥4 and if North plays low again finesse in Dummy with the ♥J. If North plays his ♥K instead, Dummy will catch it with the Ace then win another trick with the Jack. In this scenario NS will win not a single heart trick !
Scenario 2 - Right play : "Second player covers an Honour !"
| North ♥ .. 8 2
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| ♥K
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Declarer
♥.. 7 4
| > ♥Q
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| ♥A
| Dummy
♥ .. J 9 5
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| ♥3
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South ♥ 10 6 ..
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North must cover the Honour card lead (♥Q) with his ♥K ! This will force Dummy to play and win with the ♥A. South's ♥10 is now promoted to make the third heart trick. ! Next
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