CUSUM
CUSUM is accepted as a guess but is not on the solver's possible-answer list.
As an opener, it rules out about 80.6% of possible answers.
Meaning and pronunciation
- Noun
-
cumulative sum control chart: a sequential analysis technique typically used for monitoring change detection
Source: Wiktionary contributors · CC BY-SA 4.0. Corrections.
Wordle status
A word can be a playable guess without being a possible answer.
Playable guess
YesIncluded in the Wordle guess list used by our tools.
Possible answer
NoThe solver does not currently treat this as a possible answer.
Past Wordle answer
Not used yetNo past answer date found.
The possible-answer list is the solver's current list and may change when Wordle adds new answers.
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See what the public sample says →How CUSUM performs as a guess
Wordle accepts CUSUM as a guess, but the solver does not list it as a possible answer.
Played as an opener, it lands at least one colored tile in 60.1% of games, misses completely in 39.9%, and leaves about 461 possible answers on average.
In the previous complete opener benchmark, it ranks #12,241 of 14,855 openers, averaging 3.82 guesses in games solved within six turns.
Try your feedback pattern
Tap the tiles to match your feedback, then see the ranked follow-up guesses.
Useful pattern pages
If you only know part of the word, start with one of these matching patterns.
First-turn measures
All four describe CUSUM used as an opening guess. Entropy is the same idea as “avg ruled out” on a log scale: a higher number means the guess splits the possible answers into more, smaller groups.
As an opening guess: previous benchmark
How CUSUM performed in the previous complete opener benchmark, against its captured answer snapshot. These research figures are separate from today's solver recommendations. See the data page for the method.
Composition
Feedback chances
Feedback distribution
CUSUM can come back 63 different ways. These are the most likely, and how many of the possible answers give each one:
Letter-value totals
Base letter-value totals for CUSUM; these do not show whether either game accepts the word.
Scrabble
Words With Friends
Scores shown are base values without double/triple letter or word bonuses.
Try next
Strategy after playing CUSUM
What the solver recommends next for each way the board can respond to CUSUM.
Quick reference
Largest feedback groups after playing CUSUM:
Research on CUSUM
Game-tree analysis and word research for CUSUM, with an explanation for each figure.
Optimal play
Opening with CUSUM, a proven-optimal strategy averages 3.87 guesses and ranks #13,120 of 14,855 legal openers. The best proven opener, TARSE, averages 3.55.
In hard mode it averages 3.98 guesses at best and is rank #5,842 of the 7,453 openers that can still guarantee a solve within six guesses.
Our six-turn simulation says 3.82, at or below the proven-optimal 3.87, because the two figures score different answer lists.
These figures come from exhaustive game-tree search and are exact for the NYT lists of July 2023 (3,158 answers). They do not use the site's working answer pool.
How it sounds
Two syllables, stress on the first syllable Say it KYOOSUHM. Estimated pronunciation
This pronunciation is machine-estimated, not taken from a pronunciation dictionary.
Sources: Optimal-play values: Alex Selby's exhaustive Wordle analysis (MIT); Pronunciation: CMU Pronouncing Dictionary (BSD), with machine estimates from the g2p_en model.