Declarer play: Should I duck or not?

Situations where declarer should think carefully about whether to duck or win the trick. If you would like to join these (free) lessons send me an email tonystaw@gmail.com https://tinyurl.com/2hprhpdm (with J in dummy, 10 in hand) Do Not Duck https://tinyurl.com/yddkxfju Do not duck A (just J in dummy) https://tinyurl.com/y9r5ofp5 Ducking is defeated https://tinyurl.com/22263wob - if you win the first trick, they will probably switch to a trump later https://tinyurl.com/24f64rz6 - if you duck they may not switch to a trump https://tinyurl.com/228b65jt - must play a low club from each hand at trick 2 https://tinyurl.com/2aach7g8 - if you win the first club, you will likely be defeated https://tinyurl.com/2bp5hz4w - Makes if you duck (DUCK AH) https://tinyurl.com/2a2xyqzn - Likely to be defeated if you win trick 1