Updates

An erratum was posted for Day 7's puzzle, Spy Games. See the puzzle's webpage for details.

An erratum was posted for Day 6's puzzle, September of the Puffins. See the puzzle's webpage for details.

A second erratum was posted for Day 5's puzzle, 1. e4 e5. See the puzzle's webpage for details.

An erratum was posted for Day 5's puzzle, 1. e4 e5. See the puzzle's webpage for details.

An second erratum was posted for Day 4's puzzle, Subnivean Snake. See the puzzle's webpage for details.

An erratum was posted for Day 4's puzzle, Subnivean Snake. See the puzzle's webpage for details.

An erratum was posted for Day 3's puzzle, Double-Crossed. See the puzzle's webpage for details.