GATEFALL (read-ahead puzzle)

GATEFALL is a real-time vision puzzle where gate stones advance down a narrow bridge. Their true faces appear only for a blink, then turn into shadows.

The core action is simple: tap an empty cell to place a seal where a stone will arrive. When a stone touches that seal, it cuts automatically. Purple and cyan stones should be cut; red forbidden stones should be allowed to pass.

How to play

1. Enter a username and choose GATEFALL
2. First, just watch the preview: purple ◆ and cyan ◇ should be cut, red × should not
3. Tap a lower cell to place a MIKIRI seal where a stone will arrive
4. When a stone touches that seal, it auto-CUTs; tapping the same seal only removes it
5. Cyan stones charge the afterglow slash; use it when one column gets crowded

Difficulty

Before your run, GATEFALL shows a short automatic demo. The first three playable rounds are intentionally slow; after that, speed, stone count and forbidden stones increase gradually without sudden jumps.

Tips

• Watch the automatic demo before touching the board
• Use the first blink to memorize red stones
• Place seals low enough that you have time to react
• Sometimes the best move is to let a forbidden stone pass
• Save the afterglow slash for crowded columns

FAQ

Q. Is GATEFALL free?

A. Yes. It is free, needs no signup and runs in your phone or desktop browser.

Q. Is it a copy of I.Q?

A. No. It is inspired by the tension of read-ahead action puzzles, but uses MIKIRI's own seal, forbidden-stone, memory and afterglow-slash rules.

Q. What does the score mean?

A. It is a game score based on rounds survived, stones read and clean cuts. It is not a medical or sports performance measurement.

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