Understanding Tile Feedback, Duplicate Logic, and Information Theory
Daily five-letter deductive word games like Wordle, Quordle, and Octordle rely on exact combinatorial constraints. Mastering the game requires understanding how letter states, positional bounds, and entropy partitions interact.
Green Tiles (Confirmed Spot)
A green tile confirms that the letter is in the secret target word and is in that exact slot position (0 through 4). All remaining candidate words must contain this character at this index.
Yellow Tiles (Misplaced)
A yellow tile indicates that the letter exists in the secret word, but not in this specific position. The solver records a forbidden position for that slot while mandating the letter appear elsewhere.
Gray Tiles (Eliminated / Capped)
A gray tile indicates that the letter does not appear anywhere in the word, or that all valid occurrences of this letter have already been accounted for by other green/yellow tiles in this row.
How Wordle Handles Duplicate & Repeated Letters
The most common point of confusion in Wordle involves words with repeated letters (like SPEED, EERIE, or GEESE). The official Wordle rule evaluates duplicate letters from left to right:
Our solver models this exact count constraint: if a letter appears colored once and gray once in the same guess, its count is locked to exactly 1. Words with two or more occurrences of that letter are eliminated immediately.
How Smart Guess Recommendations Work
Rather than relying on guesswork, our solver ranks exploratory guesses using information theory (Shannon entropy). Each guess produces one of 243 possible color patterns ($3^5$). A high-ranking guess divides the remaining candidate words evenly into small groups, ensuring you eliminate the largest number of possibilities no matter what colors appear.
- Even Grouping: An ideal guess avoids placing all remaining words into a single color outcome, guaranteeing steady progress on every turn.
- Breaking Rhyme Traps: When several candidate words share the same ending (such as _OUND: BOUND, FOUND, HOUND, ROUND, SOUND, WOUND), guessing answers directly can cost 5 wasted turns. An exploratory guess testing five distinct consonants (like BRICK or CLAMP) pinpoints the correct answer in a single move.
- Hard Mode Support: In Hard Mode, the game requires you to reuse all previously confirmed clues. The solver automatically checks Hard Mode rules so recommended moves stay valid under tournament play.