How crossword themes work, and how to spot them
Many crosswords are more than a random collection of words. The longest answers are often linked by a hidden idea: a shared category, a pun, a spelling trick or a twist in the grid itself. Spotting that idea early can turn a hard puzzle into an easier one.
What a crossword theme is
A theme is a connection shared by several answers in the puzzle, usually the longest ones. In American daily crosswords, the theme answers are typically placed symmetrically, often across the middle of the grid and near the top and bottom. Some puzzles are themeless, especially those that aim for wide-open grids full of lively long answers, but most weekday puzzles in newspapers have a theme.
Common kinds of theme
Category themes
Each theme answer includes a member of a group, such as colors, trees or card games. The connection may be obvious or it may be hidden inside longer phrases.
Hidden-word themes
A smaller word is tucked inside each theme answer, often spanning two words of a phrase. For example, a set of theme answers could each hide an animal: BAT inside BATTERY, RAT inside RATIONAL, CAT inside SCATTER and DOG inside DOGMATIC. Once you notice the pattern, you know part of every other theme answer before you have read its clue.
Wordplay themes
Each theme answer is a familiar phrase with a change: a letter added, a letter removed, a sound swapped or a pun. The clues for these answers usually end in a question mark to warn you that the phrase has been altered.
The revealer
Many themed puzzles include a revealer: an answer that explains the theme. It is often the last theme answer in the grid, and its clue may refer to the other theme entries with a phrase like “and what each of the starred answers contains”. If you are stuck on the theme, it can be worth jumping to the revealer early.
Rebus and grid tricks
Some puzzles break the usual rules. In a rebus puzzle, several letters, or even a whole short word, go into a single square. Other puzzles use shaded squares, answers that turn corners, or letters that must be read in a particular direction. The puzzle’s title or notes usually give a hint when something unusual is happening.
How to spot the theme while solving
- Look at the title. Many puzzles have a title that hints at the theme, often with a pun.
- Find the long answers. Theme answers are usually the longest in the grid, and they are placed symmetrically.
- Watch for starred or linked clues. Clues marked with an asterisk, or clues that refer to each other, are often theme clues.
- Compare answers you have solved. Once you have two theme answers, write them next to each other and ask what they share. Look at their beginnings, endings and any word hidden across their middle.
- Suspect a trick if the crossings do not fit. If an answer you are sure of seems to have too many letters for its space, the puzzle may be a rebus.
How the theme helps you
A theme gives you information that is not in any single clue. If you know that every theme answer hides a color, and a long answer ends in ?ED, the hidden color may well be RED. If you know that every theme phrase has had a letter added, you can work out the original phrase and then find the extra letter. In this way a theme can supply several letters at once, which in turn helps the crossing answers.
Try it yourself
Next time you solve a themed puzzle, stop after your first two long answers and try to name the theme before reading any more clues. It is a good habit that pays off in harder puzzles. If you want to understand how themes are built from the other side, read our guide to making your own crossword. For individual clues that refuse to budge, use the letters you have in the crossword solver.