Guide

Unscrambling by hand: the techniques the solvers automate

Every unscrambler on this site automates a trick people already use on paper. Knowing the tricks makes the tools easier to read, and sometimes it is faster than reaching for one.

Sort the letters. Write the rack in alphabetical order. AEINRST is easier to scan than RETINAS or NASTIER, because your eye stops re-reading the same letters in new orders. The solver works the same way: the shipped index files every word under its sorted letters, so words that use the same letters share one line. The AEINRST line holds nine words: ANESTRI, ANTSIER, NASTIER, RATINES, RETAINS, RETINAS, RETSINA, STAINER and STEARIN.

Strip the affixes. English hangs S, ED, ING, ER and RE on stems. Pull a likely suffix out of the rack, solve the shorter stem, and put the suffix back. Cross off one copy of each suffix letter, so a rack with two Ns keeps one after ING comes out. S is the common case: of the 12,275 seven-letter words in the list that contain an S, 6,330 are a six-letter word plus a final S, so a seven-letter rack with an S is often a six-letter problem wearing a plural.

Pair the unusual letters first. A Q wants its U. An X nearly always sits beside a vowel: of the 4,610 X's in the list's words, 4,537 have a vowel on at least one side. A V almost always has a vowel after it, and only 17 words in the list end in V, among them REV, SHIV, LUV and IMPROV. Placing the awkward letter first narrows the options faster than arranging the easy ones.

Split long racks in two. Ten letters rarely make one word, but they often make two short ones. Deal the rack into two piles, solve each, and move letters between the piles when one goes dead. The anagram solver runs this search for racks of 4 to 12 letters, trying every deal into two words of at least two letters and keeping the pairs where both halves are words.

Which tool runs which trick

The word unscrambler is the sorted-rack lookup at full speed, returning every word your letters build. The word finder turns the affix idea into filters (starts with, contains, ends with), so a hunch about a suffix becomes a constraint. The jumble solver is built for the newspaper shape: four scrambles at a time, each an exact-length word. When the puzzle gives you squares instead of letters, the crossword solver takes the pattern with blanks. All of them search the same list, Word Sieve's ENABLE1-derived edition with 39 entries excluded, so the tools never disagree with each other about what is a word.

Reading the shape of a rack

Before any technique, check the rack's balance. In this list a little over one letter in three is a vowel. With a single A, E, I, O or U in a seven-letter rack, look for a Y: only 459 of the 23,100 seven-letter words have just one of those five vowels, and 367 of them also use a Y, like BLANKLY and BLOTCHY. A rack crowded with vowels works the other way round: place the consonants first and fit the vowels around them.

Doubled letters are common inside words and rare at the start. SS appears in 10,527 words and LL in 8,258, yet no word in the list starts with SS and only four start with LL (LLAMA and LLANO, with their plurals). OO starts the most words of any doubled pair, 83, then AA and EE with 19 each. Try a pair together in the middle or at the end of a word before you split it.

Length expectations matter too. Eight letters is the most common word length in the list, with 28,417 entries, so a long rack that will not yield a full-length word is normal. The full-use question ("what uses exactly these letters?") belongs to the anagram solver, and the every-word question belongs to the unscrambler. When you can feel a suffix but not the stem, type the suffix into the word finder's ends-with box.