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Sentence puzzle 🧩

It’s the core feature of the training stage in the 3-stage learning flow. Some words in each sentence appear as blanks, and you fill them in by tapping the word cards in the right order.

“Solve puzzles — Listen to the sentence, then tap the word cards in order to fill in the blanks.”

Sentence puzzle — fill the blanks by tapping word cards in order

Pick word cards in order to fill the blanks. Candidate cards for the next blank are always visible on screen.

After several wrong tries, a hint appears automatically. The top of the screen shows “tries left until hint” — keep an eye on it. Hints give you a tiny clue, like part of the word or its part of speech.

Once you finish a sentence, the words you got wrong are highlighted in red. You can see at a glance where you stumbled, so the review points are obvious.

Wrong-answer highlighting — missed words shown in red after a sentence

Each puzzle’s result is recorded as a medal. Get every word right and you earn Master; the more words you miss, the lower the medal — Gold, Silver, Bronze. The video player’s top bar shows a live preview of the medal you’d get right now.


Tap and hold a word inside a card and a dictionary / save menu pops up:

  • Look up the meaning
  • Save the word to your Library
  • Copy — paste it into Notes or another app

After you finish a sentence’s puzzle, the recording button shows up. Record your own voice and play it back instantly. → Recording

Spotted a useful expression? Bookmark the sentence and find it again under the Expressions section in your Library. → Saving


Turn on the “Blank Length” setting to make every blank the same width.

  • OFF (default): blank widths match the actual word length → that itself is a hint
  • ON: every blank is the same width → no length-based hints (harder)

If you’re past beginner level, ON is recommended.

Replay the same sentence at different speeds. Listen carefully at 0.7x to lock in what’s being said, then finish at 1.0x.

Playback controls


  1. Guess from context first — don’t start tapping cards immediately. Predict what could fit the sentence flow first, then look at the cards.
  2. Mistakes are fine — the red highlights are review signals, not failures.
  3. If it’s too hard, go back to the pre-watch — once you’re more familiar with the audio, the puzzle gets much easier.
  4. You can resume any time — exit and you’ll find it under “In-progress videos.” Even so, doing it in one go tends to be more effective for listening.