Successful Up or Down Stair Navigation

RoboCupJunior Rescue RoboCupJunior Rescue Maze
1

Hello RCJ Rescue Committee,

Thank you for sharing the 2026 rules.

I have read RCJRescueMaze2026-final.pdf, and I have some questions regarding the following section:

5.6.10 Successful navigation means the robot moves from the bottom to the top of the stairs (or vice-versa) and is entirely within the horizontal tile without toppling over.

As stated, the staircase points are awarded when the robot has completely entered the horizontal tile beyond the stairs.

If that is the case, the robot would not receive the staircase points unless it has completely entered that horizontal tile.

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In the diagram below, even if the robot moves from c1 to c2, it would not receive the staircase points, because the robot is not entirely within the horizontal tile.

Is this understanding correct?

I posted this question on the Forum on February 15, but I have not yet received a response. I would greatly appreciate it if you could kindly provide an answer.

Best regards,
MASA

1 Like
2

Hello @MASA,

answering your question:

Successful navigation means the robot moves from the bottom to the top of the stairs (or vice-versa) and is horizontal.

So if you navigate up (c1 to c2) and the robot is completely level, e.g. c2, you will be awarded 10 points for the upstairs once.

And if you navigate down (c2 to c3) and the robot is completely level, e.g. c3, you will be awarded 10 points for the downstairs once.

But if you come back to it, you will not receive it again, as you have already received the points for this part of the map.

I hope this has made it clearer to you.

Regards,
Mahmoud Madi
2026 RCJ Rescue Committee

3

Dear @Mahmoud

Thank you for your answer.

The statement you wrote, “Successful navigation means the robot moves from the bottom to the top of the stairs (or vice versa) and is horizontal,” is different from the description in the Rescue Maze 2026 Rules.

Rescue Maze 2026 Rules
5.6.10 Successful navigation means the robot moves from the bottom to the top of the stairs (or vice-versa) and is entirely within the horizontal tile without toppling over.

Isn’t your explanation based on the Rescue Maze 2025 Rules, which state the following?

Rescue Maze 2025 Rules
5.6.9 Successful navigation means the robot moves from the bottom to the top of the stairs (or vice-versa) and is horizontal.

If your explanation is correct, it would mean that section 5.6.10 of the Rescue Maze 2026 Rules is incorrect.

Which one is correct?

Best regards,
MASA

4

Dear @MASA,

The statement in 2026 is correct; it is just more explanation to make it more clear.

However, if you still have doubt, below is a figure that should make it clearer for you to understand.

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Regards,
Mahmoud Madi
2026 RCJ Rescue Committee

5

Dear @Mahmoud

Thank you for your reply. However, my question has still not been resolved.

Q1. In the “Rescue Maze 2026 Final rules”, which of the following states in the picture is considered “Successful Up or Down Stair Navigation”?

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and
Q2. In the “Rescue Maze 2025 Final rules”, which of the following states in the picture is considered “Successful Up or Down Stair Navigation”?

Best regards,
MASA

6

Hello @Mahmoud

I have not received a response yet, even though more than three weeks have passed since my last question. I would appreciate it if you could provide an answer.
Also, when I first asked my question, I presented a diagram. You replied that the robot would receive the stair (ramp) points when it moves from C1 to C2.
My question is: when the robot moves to C2, even if it reaches that position, it is not “entirely within the horizontal tile.” Since the robot is larger than the horizontal tile and is sticking out, why is it still considered valid?

Best regards,
MASA