Best Opening Words: How to Choose Your First Guess

Why Your First Guess Matters

In games like Pigs and Bulls, you receive feedback after every guess: Bulls tell you how many letters are in the correct position, and Pigs tell you how many correct letters are in the wrong position. Unlike games that color each letter individually, you only get aggregate counts. This means your opening guess needs to test as many high-value letters as possible, because the feedback you receive applies to the word as a whole.

A strong first guess is not about getting lucky. It is about maximizing the amount of information you extract from the response. Even if your first guess yields zero Bulls and zero Pigs, that result is enormously valuable because it eliminates every word containing any of those letters.

Letter Frequency Analysis

The English language does not use all 26 letters equally. Some letters appear far more frequently than others, and choosing common letters for your opening guess gives you the best chance of getting meaningful feedback.

The most frequent letters in common English words are E, A, R, I, O, T, N, S, L, and C. The letter E alone appears in roughly 11% of all letter positions in English text. A, R, I, and O each appear in 6-8% of positions. By contrast, letters like Q, X, Z, and J each account for less than 0.5% of letter positions.

This means a word built from the top 5 most common letters is statistically far more likely to overlap with the secret word than one using rare letters. Words like RAISE, STARE, AROSE, and IRATE all pack the most common letters into a single guess.

Vowel Coverage Strategy

Every English word contains at least one vowel (A, E, I, O, U). Most 5-letter words contain two or three vowels. By choosing an opening word that includes three or more vowels, you can quickly determine which vowels are present in the secret word, which dramatically narrows the possibilities.

Strong vowel-heavy opening words include AUDIO (four vowels), ADIEU (four vowels), OUIJA (four vowels), and ARISE (three vowels). If you play AUDIO and receive zero Pigs and zero Bulls, you immediately know the secret word contains none of A, U, D, I, or O. That eliminates roughly 80% of the dictionary in a single move.

The tradeoff is that vowel-heavy words tend to use fewer consonants, which means you learn less about consonant placement. Many experienced players prefer a balanced approach: two vowels and three high-frequency consonants.

Avoiding Repeated Letters

Your opening guess should almost never contain repeated letters. A word like LEVEL uses only three unique letters (L, E, V) despite being five characters long. You are effectively wasting two character slots that could be testing additional letters.

By using five unique letters, you test five of the 26 letters in the alphabet (roughly 19%) with a single guess. Two guesses with all unique letters test 10 of 26 (roughly 38%). This rapid elimination is key to solving puzzles efficiently.

Positional Frequency

Beyond overall frequency, letters have preferred positions within words. For example, S is extremely common as a first letter but also frequent at the end of words. T is common at the start and end but less common in the middle. Understanding positional frequency can help you place high-frequency letters where they are most likely to appear.

Consider how many 5-letter words start with S (STONE, STARE, STEAM, SLATE) versus how many start with E (fewer). If you place S at the beginning of your guess, you are more likely to score a Bull if S is indeed present.

Recommended Opening Words by Length

Different word lengths call for different strategies. Here are strong opening words for each length available in Pigs and Bulls:

• 4 letters: RATE, SAIL, TONE, LURE — each uses four unique high-frequency letters
• 5 letters: RAISE, STARE, AROSE, CRANE — optimal blend of vowels and common consonants
• 6 letters: SENIOR, REASON, LADIES, TAILOR — covers a wide range of common letters
• 7 letters: NASTIER, RETAINS, DETAILS — tests seven unique letters at once
• 8 letters: CENTRALS, NOTARISE, RELATION — maximizes coverage across eight positions

The Two-Guess Opening System

Some advanced players use a predetermined pair of opening guesses that together cover 10 unique high-frequency letters. For example, starting with RAISE followed by MOUNT tests R, A, I, S, E, M, O, U, N, and T — 10 of the 12 most common English letters. After two guesses, you often have enough information to deduce the answer or narrow it to just a handful of possibilities.

This system is particularly effective in Pigs and Bulls because the Bulls/Pigs feedback tells you not just which letters are present but provides positional hints through the Bull count. Two well-chosen guesses frequently give you enough data to solve on the third attempt.

Practice Makes Perfect

The best way to find your personal optimal opening word is to practice. Play Standard mode games with different starting words and track which ones consistently give you the most useful feedback. Over time, you will develop an intuition for which letters and positions yield the richest information.

The Beginner vs. Advanced Strategies guide dives deeper into how to use opening word information to systematically eliminate possibilities. And if you are ready to put your skills to the test, try the Daily Challenge where everyone solves the same word each day.