4D 4x4x4x4 Rubiks Cube in 7:52.61 [World Record] @HactarCE

HactarCE Leaderboards: https://hypercubing.xyz/leaderboards/

Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 10:20 UTC on 2024-04-24 ("4-to-the-4" day) live on the Hypercubers Discord server. At the time of recording, this was a world record.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

updated 2 years ago

4D 4x4x4x4 Rubiks Cube in 7:52.61 [World Record]

HactarCE 2024-04-24 | Leaderboards: https://hypercubing.xyz/leaderboards/

Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 10:20 UTC on 2024-04-24 ("4-to-the-4" day) live on the Hypercubers Discord server. At the time of recording, this was a world record.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

Trying new strategies for solving 3^4 (GONE WRONG!)

HactarCE 2025-06-21 | Turn on subtitles! I spent 45 minutes typing them out so you better appreciate them.

I was trying to break Josie's 1:41.29 world record, and to apply a new strategy that Luna taught me today. I did not succeed.

4D 3x3x3x3 Rubiks Cube in 1:42.33 with Ao5 1:50.76 [World Record avg]

HactarCE 2025-06-20 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record average of 5. The 1:42.338 single was a PB but not a world record. Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 02:45 UTC on 2025-06-20 live on the Hypercubers Discord server.

Times:
(2:11.72)
1:53.36
1:52.75
(1:42.33)
1:46.17

Excluding the best and worst, the average of the remaining three is 1:50.76.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 3x3x3x3 Rubiks Cube in 1:43.25

HactarCE 2025-06-05 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record. Done using Hyperspeedcube (https://ajfarkas.dev/projects/hyperspeedcube/) at 01:12 UTC on 2025-06-05 live on the Hypercubers Discord server.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 3x3x3x3 Rubiks Cube Ao5 1:53.41

HactarCE 2025-06-05 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record. Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 00:57 UTC on 2025-06-05 live on the Hypercubers Discord server.

Times:
1:48.89
2:06.55
1:44.78
(2:12.66)
(1:44.17)

Excluding the best and worst, the average of the remaining three is 1:53.41.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

1000th win in Shenzhen I/O Solitaire

HactarCE 2025-03-07 | Am I proud of this? Should I be? I don't know.

Ranking all 3000 xkcd comics (for charity!) (part 2)

HactarCE 2024-10-19 | PART 1: youtube.com/watch?v=RYu0fMBNwtg

Donate to the Foundation to Decrease World Suck! https://tilt.fyi/XhhRbG8n6z

Yes, it's a real charity. fightworldsuck.org
They're building a maternal & infant care hospital in Sierra Leone, and distributing funds to many other charities too.

I'm using a custom program I wrote just for this stream using 🦀 Rust & egui: github.com/HactarCE/xkcd-rank

:: ABOUT ME ::
I'm developing Hyperspeedcube, the most powerful simulator for 4D+ Rubik's cubes and other puzzles. If high-dimensional twisty puzzles sounds like something you're interested in, check out the links below and subscribe! I plan to make videos about how Hyperspeedcube works and guides for learning hypercubing.

Hypercubing wiki: https://hypercubing.xyz/
Hyperspeedcube: github.com/HactarCE/Hyperspeedcube#readme

Music provided by TheRelaxedMovement.
Check it out here: / therelaxedmovement
© Henry Keate t/a TheRelaxedMovement. All Rights Reserved

Ranking all 3000 xkcd comics (for charity!) (part 1)

HactarCE 2024-10-19 | PART 2: youtube.com/watch?v=e95fmPLgkps

Donate to the Foundation to Decrease World Suck! https://tilt.fyi/XhhRbG8n6z

Yes, it's a real charity. fightworldsuck.org
They're building a maternal & infant care hospital in Sierra Leone, and distributing funds to many other charities too.

I'm using a custom program I wrote just for this stream using 🦀 Rust & egui: github.com/HactarCE/xkcd-rank

:: ABOUT ME ::
I'm developing Hyperspeedcube, the most powerful simulator for 4D+ Rubik's cubes and other puzzles. If high-dimensional twisty puzzles sounds like something you're interested in, check out the links below and subscribe! I plan to make videos about how Hyperspeedcube works and guides for learning hypercubing.

Hypercubing wiki: https://hypercubing.xyz/
Hyperspeedcube: github.com/HactarCE/Hyperspeedcube#readme

Music provided by TheRelaxedMovement.
Check it out here: / therelaxedmovement
© Henry Keate t/a TheRelaxedMovement. All Rights Reserved

HactarCE Live Stream

HactarCE 2024-10-17 | ...

4D 2x2x2x2 Rubiks Cube Ao5 33.94

HactarCE 2024-06-27 | This average also contains my PB single, which is 29.97 seconds.

Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, the Ao5 was a world record but the PB single was not.

Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 00:42 UTC on 2024-06-27 live on the Hypercubers Discord.

Times:
34.55
(29.97)
37.22
(43.20)
30.05

Excluding the best and worst, the average of the remaining three is 33.94.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 5x5x5x5 Rubiks Cube in 19:35.75 [World Record]

HactarCE 2024-05-16 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record by over 20 seconds and a PB by over a minute. Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 16:01 UTC on 2024-05-16 live on the Hypercubers Discord.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 3x3x3x3 Rubiks Cube Ao5 2:16.80

HactarCE 2024-04-22 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record.

Done using Hyperspeedcube (https://ajfarkas.dev/hyperspeedcube/) at 05:50 UTC on 2024-04-15 live on the Hypercubers Discord server.

Times:
2:15.52
2:15.10
(2:07.85)
2:19.79
(2:33.82)

Excluding the best and worst, the average of the remaining three is 2:16.80.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

Generalized F2L Terminology

HactarCE 2024-01-17 | In this video, I present generalized F2L terminology on a 3D Rubik's cube. Generalized F2L terminology is very useful in hypercubing, where F2L becomes much more complicated but retains the same basic building blocks.

Hypercubing tutorials playlist: youtube.com/playlist?list=PLBQ7ltR88PRv9Rmrv7iRhupGaazEPWZi5
Hypercubing community website: https://hypercubing.xyz/
Hyperspeedcube download: https://ajfarkas.dev/hyperspeedcube/
Hyperspeedcube online: https://hypercubing.xyz/hyperspeedcube/

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

Sections:
0:00 - Intro
0:15 - Head & body
0:44 - Axes
2:00 - Actions & invariants
3:10 - Push & pull
3:36 - Overpush & overpull
4:04 - Hide & reveal
4:33 - Split pair
5:09 - Capping & uncapping
6:03 - Rebasing
6:45 - Example solve
8:21 - Outro

Intro to Hypercubing

HactarCE 2024-01-16 | In this video, I demonstrate how to get started with Hyperspeedcube 1.0, a multidimensional Rubik's cube simulator.

Hypercubing tutorials playlist: youtube.com/playlist?list=PLBQ7ltR88PRv9Rmrv7iRhupGaazEPWZi5
Hypercubing community website: https://hypercubing.xyz/
Hyperspeedcube download: https://ajfarkas.dev/hyperspeedcube/
Hyperspeedcube online: https://hypercubing.xyz/hyperspeedcube/

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

Sections:
0:00 - Intro
0:33 - Welcome screen
1:15 - 3D Rubik's cube
2:16 - Cells
2:45 - Twists
3:16 - Why not 2^4?
3:48 - 1-move scrambles
4:37 - Slice twists
4:56 - Next steps
5:29 - Outro

Piece Filters Tutorial for Hyperspeedcube 1.0

HactarCE 2023-08-26 | In this video, I demonstrate how to use piece filters in Hyperspeedcube 1.0, a multidimensional Rubik's cube simulator.

Hypercubing tutorials playlist: youtube.com/playlist?list=PLBQ7ltR88PRv9Rmrv7iRhupGaazEPWZi5
Hypercubing community website: https://hypercubing.xyz/
Hyperspeedcube download: https://ajfarkas.dev/hyperspeedcube/
Hyperspeedcube online: https://hypercubing.xyz/hyperspeedcube/
Milo Jacquet's piece filters generator: milojacquet.com/hscfilter
3-Block piece filters: https://hypercubing.xyz/methods/3x3x3x3/3block/ (link may break in the future -- just search for "3-block" within the site)

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

Keybinds Tutorial for Hyperspeedcube 1.0

HactarCE 2023-08-26 | In this video, I demonstrate how to set up custom keybinds in Hyperspeedcube 1.0, a multidimensional Rubik's cube simulator.

Hypercubing tutorials playlist: youtube.com/playlist?list=PLBQ7ltR88PRv9Rmrv7iRhupGaazEPWZi5
Hypercubing community website: https://hypercubing.xyz/
Hyperspeedcube download: https://ajfarkas.dev/hyperspeedcube/
Hyperspeedcube online: https://hypercubing.xyz/hyperspeedcube/

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 3x3x3x1 Cuboid in 1:00.930

HactarCE 2023-06-01 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record. I had been solving this puzzle for over three and a half hours trying to get a sub-1 solve.

Done using Magic Puzzle Ultimate at 01:47 UTC on 2023-06-01

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

4D 3x3x3x3 Rubiks Cube in 1:56.42 [first sub-2]

HactarCE 2023-05-13 | Leaderboards: https://hypercubing.xyz/leaderboards/

At the time of recording, this was a world record by over 5 seconds. Also my friends were playing Minecraft and learning about goats for the first time.

Done using Hyperspeedcube (github.com/HactarCE/Hyperspeedcube) at 04:13 UTC on 2023-05-13.

This solve does NOT use macros (pre-coded sequences of moves). It DOES use:
- piece filters, to hide pieces at certain times
- keybindings (one move per keypress)
- 3 sets of keybindings, with buttons to switch between them

Join us on the Hypercubers Discord server! discord.com/invite/Rrw2xeB3Gb

cha_cha_slide.lua

HactarCE 2022-02-14 | I spent all of yesterday making this. That's 12 hours I'm never getting back.

I used Lua because it's the only language I know with both a goto statement and keyword arguments.

Source code available here: gist.github.com/HactarCE/515fd10b644a85bc3a95e20267a5d8d2

Someday I'll write a blog post about the custom Python script and domain-specific language for rendering the video ...

2022-02-12 Celeste any% 32:32.977

HactarCE 2022-02-13 | New any% PB by almost 20 seconds! (I got a 32:52 a while ago that I didn't upload.) I almost ended the run after 4A, but the 5B PB made up for it.

Segments:
0:00 Prep
0:01 Prologue
0:33 City
1:59 Site
4:23 Start
6:01 Mess
8:09 Elevator
8:58 Suite
10:07 Shrine & Trail
13:02 Cliff Face
14:00 Cassette
15:40 Pre-mirror
17:20 Mirror
18:48 Pre-Badeline
23:22 Badeline
26:40 Pre-3000m
34:09 3000m

Partial Picoblaze processor using DECA cellular automaton

HactarCE 2020-10-28 | I made this in Spring 2019 as my final project in a high-school PLTW digital electronics course.

conwaylife.com/forums/viewtopic.php?f=11&t=4819
github.com/HactarCE/DECA-Picoblaze