Back in February, puzzlemaker Jeffrey Harris and I presented a series of puzzles at the American Crossword Puzzle Tournament — all of them connected to PuzzleNation. Okay, it was something of an advertisement for the new site (hey, we were excited), but the puzzles themselves are varied and challenging, and were warmly received. And now we’re posting them here for your solving pleasure.

There are seven puzzles in the set. The first six will give you answers you’ll need to solve the seventh and final puzzle. Solve ’em with a friend and see if you can beat the time of Francis Heaney and Lorinne Lampert, who blazed through all the puzzles in about 25 minutes!

You can download the puzzles here. And the answers can be found here. Happy solving!