FLL 2025: Rules for M15 Site Marking FIRST LEGO League 2025-2026 UNEARTHED Challenge
There’s so much yet to be discovered at this dig site. Place flags to mark locations for further study.
Sites are outlined on the mat wireframe.
- #2479
- 17 Aug 2025
Sites are outlined on the mat wireframe.
No Equipment Constraint: The mission model cannot earn points if it is touching equipment at the end of the match.
In this video tutorial, we demonstrate a full run for the FIRST LEGO League 2024-2025 SUBMERGED challenge, completing all missions in a single sequence. Each mission is shown individually beforehand, with close-up views of how the attachments work and the principles behind their design. All attachments are pinless, making them quick to change during the run, though aligning and loading the robot still requires practice. The strategy involves moving from one base to the other while accomplishing as many missions as possible, including retrying those close to base when needed.
While the complete run takes longer than the official 2.5 minutes, the focus here is on demonstrating reliability, consistency, and the trade-offs between time and scoring points. In some cases, missions are skipped to focus on higher-value tasks, but in this run, we aim to complete them all. The result is a strong performance that comes close to the maximum possible score.
This video tutorial focuses on accomplishing M05 Angler Fish, M09 Unexpected Encounter, collecting samples for M14 Sample Collection, 3 Krill for M12 Feed the Whale, and Reef Segments for M03 Coral Reef of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run achieves a perfect 10 out of 10 score across these missions in one continuous sequence.
The robot collects and delivers samples, gathers krill and reef segments, pushes the Unknown Creature into the Cold Seep, and engages mission models with precision. The path is optimized for efficiency, combining multiple scoring actions with minimal wasted movement. You can watch the full explaining tutorial here.
This video tutorial focuses on solving M05, M09, collecting samples for M14, 3 Krill for M12, and Reef Segments for M03 of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using Nautiq box robot (a LEGO Education SPIKE Prime robot).
This 10 out of 10 video tutorial focuses on the flawless accomplishment of M05 Angler Fish, M09 Unexpected Encounter, M10 Send over the Submersible, and M11 Sonar Discovery of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot.
The run uses a combination of aligning, front, and back attachments to execute multiple tasks in one run, including a rotation transfer system using a single long axle for M11, early execution of M10 for a strategic edge, and sensor-based alignment for precision. Despite the reduced per-run accuracy due to the mission count, this method ensures that when the run works, it secures an exceptionally high score.
This video tutorial focuses on accomplishing M05 Angler Fish, M09 Unexpected Encounter, M10 Send over the Submersible, and M11 Sonar Discovery of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses three attachments in sequence: an aligning attachment at the start to reduce initial inaccuracies, a front attachment for solving M05 and M10 while collecting krill, reef segments, and the water sample, and a back attachment for solving M11, delivering the unknown creature for M09, and collecting plankton and seabed samples.
The front attachment is particularly interesting in this configuration because it integrates two color sensors and one motor directly onto the attachment itself. These sensors are used to align the robot to the black line near M10, while the aligning attachment at the start ensures a precise launch position.
This version of the big run takes on significantly more missions in a single attempt than a standard sequence, which naturally comes at the cost of reduced accuracy. In the current FLL competition format—where only your best score from three attempts is counted—this trade-off can be highly strategic. A run that works perfectly even just once can yield a massive point boost, making this kind of high-reward, lower-consistency approach a potential game-changer for teams willing to take the risk.
This video tutorial focuses on accomplishing M15 Research Vessel of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot. In this series of test runs, the goal is to achieve 10 out of 10 successful deliveries, with the robot pushing the loaded ship to its destination, releasing it cleanly, and moving to the other launch area without a single failed attempt.
The run uses a pinless attachment with a locking mechanism and friction pins to secure the cargo during movement and allow smooth release upon arrival. The precise programming and stable design ensure consistent performance across the trials.
This video tutorial focuses on accomplishing M15 Research Vessel of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses a pinless attachment designed to push the ship loaded with cargo to its destination. After the previous run, the hook part is removed and replaced with a locking component that holds the ship securely during transport.
The locking mechanism uses friction pins to keep the ship stable until it reaches its destination, where it can then be released smoothly. This approach ensures the cargo remains secure throughout the journey while allowing for safe delivery and quick unloading at the final position.
This video tutorial focuses on accomplishing M02 Shark, collecting the trident for M14 Sample Collection, and collecting a Krill for M12 Feed the Whale of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). In this series of test runs, our goal is to achieve 10 out of 10 successful attempts, meaning the robot completes all three missions flawlessly in every trial.
The robot uses a pinless attachment with locking beams for stability, enabling it to push the shark into its habitat, trigger a drop wall to catch the Krill, and lower a motorized arm with rubber parts to grab the Trident. This efficient approach ensures consistent results across the attempts while maintaining stability and precision throughout the runs. You can watch the full explaining tutorial here.
This video tutorial focuses on accomplishing M02 Shark, collecting the trident for M14 Sample Collection, and collecting a Krill for M12 Feed the Whale of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses a pinless attachment with two locking beams for stability, featuring two main “chambers” and a motor-powered arm with rubber parts for handling multiple mission elements.
The left chamber is used to push the shark from M02 into its habitat, while the opposite side has a passive beam-trigger mechanism to drop a wall and catch the Krill in front of the shipwreck. The motorized arm slowly lowers to grab the Trident from the bottom using rubber parts, a solution that is not 100% reliable due to the challenge of the element but is the best tested option. The side locking beams are essential for keeping the attachment secured during these precise maneuvers, preventing it from detaching during the run.
This is a 10 out of 10 video tutorial that focuses on accomplishing M01 Coral Nursery, M02 Shark, M03 Coral Reef, and M04 Scuba Diver of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot).
The robot pushes the shark, flips the coral buds and coral reef, and collects and delivers the Scuba Diver with precision. This efficient multi-mission run is designed for speed and reliability, ensuring maximum points with minimal wasted movement. You can watch the full explaining tutorial here.
This video tutorial focuses on accomplishing M01 Coral Nursery, M02 Shark, M03 Coral Reef, and M04 Scuba Diver of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses a two-part pinless attachment designed to complete multiple missions in a single sequence. The small angled surface mounted under the robot flips the coral buds from M01 and pushes the shark from M02, while the front arm catches and delivers the Scuba Diver from the coral nursery to the coral reef support.
The back section of the attachment flips the coral reef from M03 using a friction-pin mechanism that stays straight during travel but drops the horizontal arm at the mission model to push the yellow plate and raise the coral reef. Extra axles on the front arm prevent the Scuba Diver from falling during delivery, ensuring reliable scoring. This coordinated multi-mission approach maximizes efficiency by combining pushing, collecting, and delivering into one smooth run.
This video tutorial focuses on accomplishing M01 Coral Nursery and M03 Coral Reef of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The aim is to see a consistent accomplishment by lifting the coral tree to the coral tree support and delivering reef segments outside the launch area in one smooth sequence.
The robot uses a motor-powered attachment to lift the coral tree precisely while a side holder secures the collected reef segments. This ensures both missions are completed without losing any pieces during movement. You can watch the full explaining tutorial here.
This video tutorial focuses on accomplishing M01 Coral Nursery and M03 Coral Reef of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses a pinless motor-powered attachment specifically designed to raise the coral tree to the coral tree support while delivering reef segments outside the launch area. This attachment was chosen after testing multiple designs, and it proved to be one of the most reliable solutions for this task.
The motor-driven lifting mechanism is mounted using long axle pins due to the gearwheel’s position, and a heavy brick is added on top for extra sturdiness, preventing the attachment from popping off during operation. On the side, a simple holder secures the three reef segments collected in previous runs for easy delivery during this mission. This combination allows the robot to lift the coral tree smoothly, place it accurately, and complete the reef segment delivery in a single, well-coordinated sequence.
In this video tutorial, the MiniBox box robot accomplishes M14 and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition. The robot is a LEGO Education SPIKE Prime robot. In this run, the robot delivers the LEGO minifigures to their designated places.
This is a 10 out of 10 tutorial in which the MiniBox accomplishes M14 and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition. The robot is a LEGO Education SPIKE Prime box robot. In this run, the robot should consistently and reliably deliver the LEGO minifigures to their designated places.
This is a 10 out of 10 tutorial in which the MiniBox accomplishes M08, M14, and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition. The robot is a LEGO Education SPIKE Prime box robot. In this run, the robot should consistently and reliably deliver the LEGO minifigure to its designated place and then push the M08 camera down the track to shoot the movie scene.
This is a 10 out of 10 tutorial in which we accomplish M04, M14, and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge. We use the MiniBox, a LEGO Education SPIKE Prime box robot. The goal of the robot is to consistently and reliably deliver the LEGO minifigures to their designated place and then press down the M03 platform to trigger the immersive experience for the viewer in the mission model.
In this video tutorial, we demonstrate a full run of all the missions in the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition, using the MiniBox - a LEGO Education SPIKE Prime robot.
These kinds of runs are extremely useful for teams looking to see how they can tackle the entire range of missions, pushing their accuracy, speed, and self-control to the limit.
In this video tutorial, we demonstrate a full run of all missions without pausing the recording. The competition is the FIRST LEGO League 2023-2024 MASTERPIECE Challenge, and the robot is the Chain Monster - a LEGO Education SPIKE Prime robot.
These kinds of runs are extremely useful for team preparation right before the competition, as they help team members improve their accuracy, speed, and self-control.
In this video tutorial, we demonstrate how the Chain Monster box robot delivers minifigures for M14 and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition. The robot is a LEGO Education SPIKE Prime model, equipped with a special attachment for precise delivery.
M14 and M15 are part of larger runs, but in this video, we focus exclusively on these two missions. Let's dive in!
This video tutorial is a 10 out of 10, demonstrating how the MiniBox accomplishes four missions - M06, M07, M14, and M15 - of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge.
Yes, the attachment is complex, and there are quite a few actions, but this LEGO Education SPIKE Prime box robot handles them brilliantly! Let's take a look!
This video tutorial demonstrates how the MiniBox accomplishes four missions - M06, M07, M14, and M15 - of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition.
It may seem challenging to achieve all of this in a single run, but with careful planning and solid programming, success is within reach! The robot is a LEGO Education SPIKE Prime box robot, equipped with rubber bands and various mechanisms. Since this is our final run, we can leave the robot on the mat, saving some time. Let's dive in!
This video tutorial showcases how the MiniBox accomplishes five missions - M02, M03, M04, M05, M14, and M15 - of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge competition.
It’s a rather complex run, as the robot uses multiple attachments and performs several actions. The MiniBox, a LEGO Education SPIKE Prime robot, is designed to leave its attachments on the mat after completing each mission. Take a close look at the attachments and study the program thoroughly before launching the robot!
This is a 10 out of 10 video tutorial demonstrating how the MiniBox robot completes M11 and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge competition. We use a LEGO Education SPIKE Prime box robot equipped with a lever to collect the M15 minifigure and a mechanism to rotate the M11 Light Show tower. We've taken a slightly unexpected approach to M11, so be sure to check out the detachable attachment!
This video tutorial demonstrates how the MiniBox robot completes M11 and M15 of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge season. The robot is a LEGO Education SPIKE Prime box robot, equipped with a mechanism to rotate the M11 Light Show tower. However, we've opted for a more interesting approach. Let's check it out in the video!