thx for improving the exercise library! It's a great way to practise, much better than learning from a book. And the fact that we can do it a few times is great, too!
No need to worry about time. But since I discovered that you get 10 points extra for solving them in time, I'm doing them quicker & my failure rate is just the same. I sometimes make more mistakes if I ponder over the puzzle!
Tactics has been my weakest point, but no its more fun to learn, so thanks again.