Jeanette Shakalli

19:24

Hello, Evan! =) Welcome!

María Concepción Greissing

19:30

i'm Concepción. hi

Evan Pathirana

19:50

i am new

Jeanette Shakalli

19:59

Great! =)

Evan Pathirana

20:28

I can solve the whole 3x3 Rubik's cube

Jason Le

20:35

same

Nikhil Maturi

20:41

8 seconds

Joyce Yang (MAA AMC)

20:41

Guess how long the Sydney's cube solve will take??

Jason Le

20:49

7ish?

Evan Pathirana

20:55

sub 10

Evan Pathirana

21:05

and 2x2 Rubik's cube

Anika

21:30

wow

Jason Le

21:31

same

Joyce Yang (MAA AMC)

21:51

Evan was closest

Joyce Yang (MAA AMC)

22:45

We ask everyone to please turn off your video so as to prevent lagging.

Evan Pathirana

22:56

no

max

23:09

yes

Omkar N

23:34

Oh yeah, I saw that

Jason Le

24:09

I can solve the 2x2, 3x3, and the triangular cube

Evan Pathirana

24:16

how

Omkar N

24:47

I can solve most cubes, except for bigger cubes, like 6x6 and 7x7

Jason Le

24:53

cool

Evan Pathirana

24:59

coooolll

Jason Le

25:03

I am working on the 12 sided cube

Evan Pathirana

25:12

nice

Omkar N

25:17

megaminx?

Jason Le

25:20

yes

Evan Pathirana

25:24

no

Omkar N

25:24

nice!

Evan Pathirana

25:34

how

Evan Pathirana

25:43

I can not

Jason Le

25:58

I am still learning to solve it

Evan Pathirana

26:08

ok

Evan Pathirana

26:14

nice

Omkar N

26:19

I have only been to 4 or 5, only because none of them are relatively close by

Omkar N

26:22

comps

Joyce Yang (MAA AMC)

26:25

Nice Omkar! There are similar strategies for solving all odd nxn cubes I believe.

Doug Wilson

26:26

my comp got postponed

Jason Le

26:33

what is your fastest time for a 3x3 cube

Omkar N

26:50

18 officially, but 12.97 at home

Evan Pathirana

26:54

30:00

Jason Le

27:08

I got 59 seconds

Evan Pathirana

27:13

30 seconds

Jason Le

27:24

wow fast

IRENE vasquez PANAMA

27:35

wow

Evan Pathirana

27:35

thanks

Evan Pathirana

27:53

it is my best

Jason Le

28:01

really fast

Omkar N

28:13

yes you can

Evan Pathirana

28:14

what challenges

Pooja

28:15

It is

Nikhil Maturi

28:19

It is possible

Omkar N

28:20

you can

Evan Pathirana

28:25

sub 5

Evan Pathirana

28:28

seconds

Evan Pathirana

28:30

3x3

Dhanya Ramanujam

28:41

yes

Joyce Yang (MAA AMC)

28:49

Why do you say yes?

max

28:52

yes. you need 27 of the pieces

Joyce Yang (MAA AMC)

28:56

(Or no)

Evan Pathirana

29:07

it is notbecause it is wat

Omkar N

29:14

this is because, of you put 2 side by side, and then on sideways below the two pieces, that becomes a 6 by 6 by 1. this 6 times above eachother is a 6x6x6

Evan Pathirana

29:20

sorry

Joyce Yang (MAA AMC)

30:17

Nice explanation Omkar!

Evan Pathirana

30:34

yeah

Jason Le

30:51

I solved 2 3x3s and a 2x2 and a triangle in 3:08

Evan Pathirana

31:08

nice

Omkar N

31:53

I think I can do 2 3x3s and a 2x2 and a piraminx (pyramid cube) in maybe under 1;15

Jason Le

32:02

wow

Joyce Yang (MAA AMC)

32:20

Permutation=Choosing where the cubies are placed

Evan Pathirana

32:40

what does that mean

Omkar N

32:56

I can solve a 3x3 in an average time of 20 to 25 seconds, a 2x2 in an average of 9 seconds, and a pyra in an average of 10

Omkar N

33:01

so maybe faster

Jason Le

33:06

cool

Jeanette Shakalli

33:11

We are calculating how many different configurations of the Rubik's Cube are there

Evan Pathirana

33:17

ok very cool

Jason Le

33:24

I one time solved a pyramid one in 8 seconds

Joyce Yang (MAA AMC)

33:42

Orientation=Choosing what direction the cubies are facing

Evan Pathirana

33:59

ok

Omkar N

34:06

my best pyraminx I think is 6 or 5

Jason Le

34:10

cool

Jason Le

34:15

mine is 8

Evan Pathirana

34:40

nice very nice

Jason Le

35:19

It took me like less than 1 day to learn to solve a pyramix

Omkar N

35:26

yeah same

Jason Le

35:26

or pyramid cube

Omkar N

35:44

I got one for christmas, and learned it by the afternoon

Jason Le

35:51

nice

Omkar N

35:58

but now

Omkar N

36:02

I have a faster one

Evan Pathirana

36:07

I can not solve it

Jason Le

36:15

solve what

Evan Pathirana

36:31

pyramid cube

Jason Le

36:36

huh

Jason Le

36:43

you should try

Jason Le

36:48

it is pretty simple

Evan Pathirana

36:58

well I do not have one

Jason Le

37:04

oh

Jason Le

37:09

makes mor sense

Jason Le

37:13

*more

Evan Pathirana

37:34

my mom will not buy one

Jason Le

37:46

oof

Evan Pathirana

39:14

cause I am getting 3x3 GAN m lite magnetic

Jason Le

39:27

cool

Joyce Yang (MAA AMC)

39:32

Please type any questions so far!

Omkar N

39:51

I have a gan 356 air sm

Evan Pathirana

40:02

I ordered the 3x3 Gan 356 M lite magnetic

Evan Pathirana

40:04

as well

Evan Pathirana

40:14

me to

Anyelo Garcia

40:43

is there a general formula for the n x n cube?

Evan Pathirana

40:59

I do no no

Evan Pathirana

41:08

ok

Evan Pathirana

41:18

ask Sydney weaver

Evan Pathirana

43:42

what is it

Evan Pathirana

44:02

I AM NEW

Omkar N

44:12

oh, oops

Joyce Yang (MAA AMC)

44:14

Omkar N

44:21

I forgot that it was 2, to 3

Omkar N

44:29

not*

Evan Pathirana

44:48

me neither

Omkar N

45:00

yeah, oops sorry

Joyce Yang (MAA AMC)

45:27

No worries. Good thought though.

Michael Eder

47:16

but there are not 27 cubes in a Rubriks cube or are there?

Evan Pathirana

48:36

core

Joyce Yang (MAA AMC)

48:40

There are 27 cubes in a 3x3x3 block

Evan Pathirana

48:52

okay

Joyce Yang (MAA AMC)

49:33

Challenge: Is there a way to cut the 3x3x3 block into 27 pieces using less than 6 cuts (possibly rearranging pieces after a cut)?

Evan Pathirana

50:13

no I do no think so

Evan Pathirana

50:24

no no no

Jason Le

50:57

No I don't think so

Jason Le

52:00

what does prime mean

Joyce Yang (MAA AMC)

52:18

Prime=counterclockwise

Evan Pathirana

52:22

oh

Jason Le

52:22

oh

Jason Le

52:26

okay

Evan Pathirana

52:30

cool

Joyce Yang (MAA AMC)

53:23

Example of Commutator = DRD'R'

Joyce Yang (MAA AMC)

53:44

Example of Conjugate=RDR'

Joyce Yang (MAA AMC)

58:21

The Commutator of U' and L' D2 L is shown as [ U' , L' D2 L ]

Joyce Yang (MAA AMC)

01:00:21

The conjugate of A, B is A B A'

Joyce Yang (MAA AMC)

01:06:42

because it would be hard to put the pieces together.

Joyce Yang (MAA AMC)

01:07:01

I think it is no because there are 27 blocks and 6 cuts is even and you can't get 7 out of 6

Doug Wilson

01:08:11

3

Joyce Yang (MAA AMC)

01:09:38

@Doug could you explain how you get 3?

Nikhil Maturi

01:09:44

How do get previous session recordings ?

Joyce Yang (MAA AMC)

01:10:09

@Nikhil it will be on maa-amc.org/featured-events

Nikhil Maturi

01:10:21

Thank you

Doug Wilson

01:10:29

After the first cut you have to put the book of 9 under the block of 18. We just keep rearranging from there (this is my grandson and I working on this)

Evan Pathirana

01:10:37

I know

Doug Wilson

01:11:06

^block

Evan Pathirana

01:11:20

what

Evan Pathirana

01:12:27

how did you get so good at the 3x3

Evan Pathirana

01:13:15

well I practiced alot

Jason Le

01:13:38

yeah

Evan Pathirana

01:13:42

where can I find a good rubiks cube timer?

Evan Pathirana

01:14:07

Also is this the last session?

max

01:14:20

yea

Evan Pathirana

01:14:26

at speedcubeshop

sydney weaver

01:14:27

qqtimer

sydney weaver

01:14:31

cstimer

Evan Pathirana

01:14:43

i

Evan Pathirana

01:14:44

speedcubeshop is where I by my cubes

Nicole Goberdhan (MAA AMC)

01:14:46

Feedback Form: https://forms.gle/HH1S4cUy7m4mJJWq6

Evan Pathirana

01:14:59

Also I am using c timer right now

Evan Pathirana

01:15:02

me to

Robert Stuckert

01:15:12

Wonderful presentation. Excellent work Sydney!

IRENE vasquez PANAMA

01:15:14

thanks for this experience

Joyce Yang (MAA AMC)

01:15:18

https://forms.gle/HH1S4cUy7m4mJJWq6

Evan Pathirana

01:15:23

I am using cstimer

Michael Eder

01:15:24

thank you

Evan Pathirana

01:16:47

bye bye!

Omkar N

01:16:51

Ok, thank you!