# MiniMax H3 domino prompt: make each contact explain the next fall

Describe one short cascade in which four separate tiles fall in a readable cause-and-effect order. The useful result is a visible contact chain, not merely four objects moving at once.

Original synthetic practice still, not a generated result. No model run has been performed.

Files: first-frame.png (1024×1024 actual first-frame input), first-frame.svg (editable geometric design source; do not upload as if it were PNG), prompt.en.txt / prompt.zh.txt, acceptance.blank.csv (all observations empty), task-definition.json and RIGHTS-REVIEW.txt.

## Generator

Use MiniMax H3 base image-to-video. Turn on Add end frame to expose First Frame, upload first-frame.png only, and leave Last Frame empty. Fast requires a pair and is not covered. Choose only options offered by the current interface; opening it does not submit.

## Starting state

The original side-view drawing contains four blank tiles on one horizontal surface. The left tile is already leaning toward the next tile; the other three stand upright. Gaps are smaller than the visible tile height, so a falling tile can reach its neighbor. Four colors help track identity without lettering.

Use the horizontal surface and the four original base positions as reference anchors. Before submitting, trace which upper edge could reach the next tile. A gap that exceeds the tile length cannot be repaired by asking for more realistic physics.

## Steps

1. Check the PNG for four distinguishable tiles and reachable neighboring gaps. If replacing the illustration, preserve a visible start of motion and keep every contact region inside the frame.
2. Request the cascade once. Keep camera travel, a hand pushing several tiles and a reset out of this attempt, so the contact sequence remains the only main event.
3. If you later obtain a result, pause just before and after each contact. Record whether the next tile had already started moving, then inspect all four identities in the final pile.

## Acceptance

- The fixed surface and original tile scale remain stable.
- Tile2, then tile3, then tile4 begin their main fall only after a visible neighboring contact.
- The same four tiles remain separate objects; no extra tile, fused pair or stretched connector appears.
- The ending shows a settled four-tile arrangement with no restart or unexplained jump.

## Limits

This exercise checks visible cause and object continuity. It does not predict impact energy, friction, exact contact timing or physical safety; the method has not been independently tested on H3.

Read prompt.en.txt before submitting. No pass results or output video are included.