Blocking or donating points, page 3
How to block correctly
When calling a block, there is only one thing you know for sure: you have no way to stop a successful lone call. You don't know if they even have the lone. The trump could be anywhere. Every play in euchre must be done with your partner in mind. While you have no way of knowing what cards your partner holds, there is a chance that your partner has what is needed to make a point. Taking out a round of trump on the first lead could benefit your team. When blocking you don't expect to make your bid, but it's nice if you can. Give your team every opportunity to make a potential point. When calling a block, always lead trump when possible. The hand below shows why.
The dealer is in the West position and has just turned up the jack of hearts. This is the second game we've played against these opponents. They won the last game with a lone call at the end. My partner(N), fearing another lone, orders up the jack as a block. I know some of you may question the wisdom of blocking at such a low score [2-1 in our favor]. But after looking at my partner's hand, I can see why he did.
Unfortunately, my partner just assumed that we would be euchred and led the nine of spades instead of trump. The dealer(W) took this trick with the ace.
The dealer(W) then led back the ace of diamonds. My partner(N) takes the trick with the ace of trump.
Then my partner(N) leads back the king of spades. East seat plays the king of trump and I (S) over trump with the left. At this point, there is no longer anything I can do to save us from a euchre.
Now go back and look at what would have happened had my partner (N) had led the ace of trump. It would have taken out East's seat king and along with West seat's right. I would have played the nine. This would have left me with the two boss trump. My partner had the boss king to pick up my losing ten of clubs, so we would have made a point. We did go on to win at 9-9. However, this hand could have cost us the game.