MindCuber.com 

Home Robot Inventor SPIKE EV3 NXT 2.0 NXT 8527

Build your own LEGO® MINDSTORMS® robot to solve the Rubik's Cube®...

Nachi Kurosawa New _top_ May 2026

NOTE: the images on this web page refer to the home variant of MindCub3r so there may be slight differences if the Education variant is used.



Download instructions and software: (right click and "Save link as...")
  • Building instructions v1.0 (Home set 31313): download

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  • Building instructions v1.1 (Education sets 45544+45560): download

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  • EV3 Color Sensor RGB Block v1.00: see here
  • EV3 Program: see here


1. Description

MindCub3r is a robot that can be built from a single LEGO MINDSTORMS EV3 home set (31313) or from EV3 Education Core and Expansion sets (45544+45560) to solve the well known Rubik's Cube puzzle.

All MindCub3r software releases should work with LEGO EV3 firmware versions from v1.06H (home) and v1.06E (Education) onwards. It is recommended that the EV3 firmware is always updated to the latest version released from LEGO.

Construct the robot by carefully following the build instructions (Home) or build instructions (Education) and then download and install the software described below.

MindCub3r software consists of three main parts:

  1. a project file: MindCub3r-v2p2.ev3 or MindCub3r-Ed-v2p2.ev3, containing the motor and sensor control program created using the standard LEGO MINDSTORMS EV3 graphical programming environment

  2. an executable program: mc3solver-v2p2.rtf, compiled from C++ that implements an efficient solving algorithm that can find much shorter solutions than the NXT MindCuber variants

  3. an EV3 application: "MC3 Solver v2p2", that is used to launch the mc3solver-v2p2.rtf program

The main program and mc3solver-v2p2.rtf executable program communicate with each other via shared files on the EV3.

Note: release v2p2 uses the .rtf extension to enable the files to be downloaded using the standard LEGO MINDSTORMS EV3 software. The .rtf extension is intended to be used for files containing text so using if for the executable program is a work-around. Please do not try to open this file with a text editor.

MindCub3r uses the EV3 color sensor in RGB mode to enable it to measure colors that cannot be distingished by the standard color mode provided by the standard LEGO MINDSTORMS EV3 software. The Color Sensor RGB Block must be imported into the LEGO MINDSTORMS EV3 software to support this mode.

NOTE: LEGO MINDSTORMS EV3 software for Mac OS from version 1.4.0 no longer supports importing blocks such as the ColorSensorRGB block. In this case there is an alternative method to download the MindCub3r software to the EV3 using a micro-SD card.

2. Software

Note: to use the Download links below: Select one of the following from the pop-up menu: Then choose a folder on your computer in which to save the file.

2.1 Install Color Sensor RGB Block

NOTE: LEGO MINDSTORMS EV3 software for Mac OS from version 1.4.0 no longer supports importing blocks such as the ColorSensorRGB block. In this case there is an alternative method to download the MindCub3r software to the EV3 using a micro-SD card.
  1. Download ColorSensorRGBzip-v1.00.zip to your computer.
  2. Extract the file from this archive.

    On a computer running Windows, find the file in Windows Explorer, click with the right mouse button and select Extract all...

    This archive contains:

    • the ColorSensorRGB-v1.00.ev3b file with the ColorSensorRGB block.

  3. Start the LEGO MINDSTORMS EV3 software and create a new, empty project.

  4. Select the Tools menu and then Block Import.

    nachi kurosawa new
  5. In the Block Import and Export dialog, select Browse.

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  6. Find the file ColorSensorRGB-v1.00.ev3b on your computer and Open it.

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  7. Select ColorSensorRGB-v1.00.ev3b from Select Blocks to Import and then select Import.

    nachi kurosawa new
  8. To complete the installation, close the dialogs and exit from LEGO MINDSTORMS EV3 software.

2.2 Download MindCub3r Program

NOTE: LEGO MINDSTORMS EV3 software for Mac OS from version 1.4.0 no longer supports importing blocks such as the ColorSensorRGB block. In this case there is an alternative method to download the MindCub3r software to the EV3 using a micro-SD card.
  1. Download the appropriate file to your computer:

    Note: previous versions are still available here

  2. Extract all the files from this archive.

    On a computer running Windows, find the file in Windows Explorer, click with the right mouse button and select Extract all...

    This archive contains:

    • the MindCub3r-v2p2.ev3 or MindCub3r-Ed-v2p2.ev3 project file with the main program
    • the mc3solver-v2p2.rtf executable program
    • InstallMC3-v2p2.rbf to install an application to launch mc3solver-v2p2.rtf

  3. Start the LEGO MINDSTORMS EV3 software and select the File menu then Open Project.

    nachi kurosawa new
  4. Find the MindCub3r-v2p2.ev3 or MindCub3r-Ed-v2p2.ev3 project file and Open it.

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  5. Download the MindCub3r program to the EV3 (but do not run it yet).

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  6. Select the Tools menu and then Memory Browser. nachi kurosawa new

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  7. Select Brick (or SD Card if there is a micro-SD card in the EV3) and find and select MindCub3r-v2p2 or MindCub3r-Ed-v2p2 in the Projects folder and then select Download.

    nachi kurosawa new nachi kurosawa new
  8. Find the folder on the computer where the files were extracted from MindCub3r-v2p2.zip or MindCub3r-Ed-v2p2.zip. Select mc3solver-v2p2.rtf and Open to download this program to the EV3.

    nachi kurosawa new
  9. Select Download again from the Memory Browser dialog.

    nachi kurosawa new nachi kurosawa new
  10. Find the folder on the computer where the files were extracted from MindCub3r-v2p2.zip or MindCub3r-Ed-v2p2.zip. Select InstallMC3-v2p2.rbf and Open to download this file to the EV3.

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  11. Close the Memory Browser dialog. Born in 1973 in Tokyo, Japan, Nachi Kurosawa

2.3 Install the MC3 Solver Application

  1. Go to the Run Recent screen on the EV3.

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  2. Press the right button on the EV3 to move to the File Navigation screen. Select the MindCub3r-v2p2 or MindCub3r-Ed-v2p2 folder and press the center button to open it. If there is a micro-SD card in the EV3, select and open the SD_Card folder first.

    nachi kurosawa new nachi kurosawa new
  3. Use the down button to Select InstallMC3-v2p2 and press the center button to run it. The EV3 will make a short beep.

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    This installs "MC3 Solver v2p2" application on the Brick Apps screen.

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  4. Turn off the EV3 brick to ensure all the files are saved to the flash memory and then turn it on again. His latest film, "Toi," premiered at the 2022

MindCub3r is now ready to use!

Nachi Kurosawa New _top_ May 2026

Born in 1973 in Tokyo, Japan, Nachi Kurosawa grew up with a passion for filmmaking. His uncle, Akira Kurosawa, was a renowned filmmaker and screenwriter, who is often regarded as one of the greatest filmmakers of all time. Growing up, Nachi was exposed to the world of cinema from a young age, often assisting his uncle on sets and learning the intricacies of filmmaking.

Kurosawa's commitment to telling unique and compelling stories has earned him a loyal following among fans and critics. His films often explore complex themes and ideas, challenging audiences to think critically about the world around them.

In recent years, Kurosawa has been working on several new projects, which have generated significant buzz in the film industry. His latest film, "Toi," premiered at the 2022 Cannes Film Festival, where it received a standing ovation. The film is a poignant drama that explores the complexities of human relationships and the power of forgiveness.

Nachi Kurosawa's new projects have generated significant excitement in the film industry, and it's clear that he is a filmmaker to watch. With a career spanning over two decades, Kurosawa has established himself as a visionary filmmaker, known for his innovative storytelling and visual flair.

Kurosawa began his career in the film industry as an assistant director, working on several Japanese films and television dramas. His breakthrough came in 2002 with the release of his debut feature film, "Tetsujin," which premiered at the Tokyo International Film Festival. The film received critical acclaim, and Kurosawa's unique visual style and narrative voice were praised by critics and audiences alike.

The world of cinema has witnessed a plethora of talented filmmakers, each with their unique style and vision. One such name that has been making waves in the film industry is Nachi Kurosawa, a Japanese filmmaker known for his innovative storytelling and visual flair. With a career spanning over two decades, Kurosawa has established himself as a force to be reckoned with in the world of cinema. Recently, he has been making headlines with his new projects, leaving fans and critics alike eagerly anticipating his next move.

Born in 1973 in Tokyo, Japan, Nachi Kurosawa grew up with a passion for filmmaking. His uncle, Akira Kurosawa, was a renowned filmmaker and screenwriter, who is often regarded as one of the greatest filmmakers of all time. Growing up, Nachi was exposed to the world of cinema from a young age, often assisting his uncle on sets and learning the intricacies of filmmaking.

Kurosawa's commitment to telling unique and compelling stories has earned him a loyal following among fans and critics. His films often explore complex themes and ideas, challenging audiences to think critically about the world around them.

In recent years, Kurosawa has been working on several new projects, which have generated significant buzz in the film industry. His latest film, "Toi," premiered at the 2022 Cannes Film Festival, where it received a standing ovation. The film is a poignant drama that explores the complexities of human relationships and the power of forgiveness.

Nachi Kurosawa's new projects have generated significant excitement in the film industry, and it's clear that he is a filmmaker to watch. With a career spanning over two decades, Kurosawa has established himself as a visionary filmmaker, known for his innovative storytelling and visual flair.

Kurosawa began his career in the film industry as an assistant director, working on several Japanese films and television dramas. His breakthrough came in 2002 with the release of his debut feature film, "Tetsujin," which premiered at the Tokyo International Film Festival. The film received critical acclaim, and Kurosawa's unique visual style and narrative voice were praised by critics and audiences alike.

The world of cinema has witnessed a plethora of talented filmmakers, each with their unique style and vision. One such name that has been making waves in the film industry is Nachi Kurosawa, a Japanese filmmaker known for his innovative storytelling and visual flair. With a career spanning over two decades, Kurosawa has established himself as a force to be reckoned with in the world of cinema. Recently, he has been making headlines with his new projects, leaving fans and critics alike eagerly anticipating his next move.



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See more LEGO robot Rubik's Cube solvers at youtube.com/IAssemble

Copyright © 2013-2020 David Gilday

LEGO and MINDSTORMS are trademarks of the LEGO Group
Rubik's Cube is a trademark of Rubiks Brand Limited

Disclaimer: thoughts and opinions expressed here are my own