Largest number of cubes possible in old-style multi attempt

I know Maskow did a 150 cube attempt about 7 years ago. And I know Graham has topped that since then. But has anyone else besides Graham done over 150 cubes before?

Edit: I guess you said earlier that Yucheng Chen and Tom have both done 150+ cubes. How big were their biggest attempts so far?
 
I know Maskow did a 150 cube attempt about 7 years ago. And I know Graham has topped that since then. But has anyone else besides Graham done over 150 cubes before?

Edit: I guess you said earlier that Yucheng Chen and Tom have both done 150+ cubes. How big were their biggest attempts so far?
Hey Mike.

Tom tried 200 *twice*, a couple of years ago, actually before I even tried 160. His best result out of the two was 162/200 in over 12 hours.

As far as I know, Yucheng's biggest attempt was 100. He tried it twice, first getting this, and then this.

Shivam has also tried 100, getting 87/100 just like Yucheng.

So as of right now, I've done the biggest ever attempt by 50 cubes. I also have the top 3 best points results at 154/160, 189/200, and 238/250. Tom has the fourth best points result with 162/200, and Maskow has the fifth best result with his 125/150.
 
I think that we may have forgotten, due to amazing feats by people like Graham, that even the best people slow down as the numbers go way up. I really doubt Graham could do 2000 cubes in as little as 5 days. I think it might take him as much as 2 weeks. And with the old-style rules, you'd have slightly less than 2 weeks to do an attempt (10 minutes per cube time limit).

I have had some time to give to this topic and have started to believe that 2000 is actually possible.
I think a person who can do 50 cube multis sub-hour comfortably should be the one trying this. (There are 10+ people capable of it as of 2023)

There are a lot of factors which can dampen or taper off the upper limit of 2000:
  1. Memory capacity: Assuming we have 2000+ rooms ready, there is still a capacity to our retention
  2. Time and human body essentials: Given the brain intensive task, sleeping more than 12 hours will be a good idea. Also doing a review of the packs of yesterday will be necessary as 5 pass memo does not guarantee retentivity over 12 hours of sleep
  3. Concentration: Unless the person is a saint, there will be some things to tend to on a daily basis, which will distract the person. Even if they do not do the task and just focus on memoing
  4. Motivation: This task is energy intensive. Even if there is monetary benefits and cheering up from the speedcubing community, advising the body to undergo this will be hard. Ultra-Marathon runs will help as body requires similar mentality there.
  5. Confusing review systems: Keep track of the review system will be more of a pain than retaining the memo, once the memo is complete then the confusion no longer exists. But the memo period will be hard to do, as we have to jump between new information periods and review of old information periods.
  6. Cube arrangement too large: Arranging 2000 cubes on multiple tables will be a big task. A few helpers will be needed to navigate between tables. The helper should be allowed to say that this table has these cube numbers.
 
If we’re going complete physical limit (not biological limits, but physics itself) then this is my guess:

so let’s assume 1 solve takes up 1gb of storage space, and assuming you know nothing else but mbld, and you were given eternity, the physical (not biological) would be 2.5 million cubes (the brain has 2.5 petabytes of storage space)

How long would this take?

let’s assume a top BLD silver can average 15 seconds per cube, that gives us around 434 days of straight MBLD. (not accounting for scrambling time) And while we’re slapping all these, admittedly Insane assumptions, let’s assume our little test dummy never messes up, doesn’t need to sleep, eat or drink, and doesn’t succumb to fatigue.

This mass of cubes would be over 7.6 square kilometers.
 
Last edited:
If we’re going complete physical limit (not biological limits, but physics itself) then this is my guess:

so let’s assume 1 solve takes up 1gb of storage space, and assuming you know nothing else but mbld, and you were given eternity, the physical (not biological) would be 2.5 million cubes (the brain has 2.5 petabytes of storage space)

How long would this take?

let’s assume a top BLD silver can average 15 seconds per cube, that gives us around 434 days of straight MBLD. (not accounting for scrambling time) And while we’re slapping all these, admittedly Insane assumptions, let’s assume our little test dummy never messes up, doesn’t need to sleep, eat or drink, and doesn’t succumb to fatigue.

This mass of cubes would be over 7.6 square kilometers.
7.6 km^2 of cubes is just not feasible.

A better way to go about 2000+ cubes old style attempt, is to use a smart cube, and print the next scramble on its face, so that the competitor does not have to move.

If the competitor wants to do reviews, he can give voice commands to the smart cube and the scramble of cube number X will be colored out on the cube.

I imagine this to be convenient and practice when old-style multi gets 2000+ cubes. I take the number 2000 as it is roughly the number of cubes we can fit in a closed big room.
 
I think that we may have forgotten, due to amazing feats by people like Graham, that even the best people slow down as the numbers go way up. I really doubt Graham could do 2000 cubes in as little as 5 days. I think it might take him as much as 2 weeks. And with the old-style rules, you'd have slightly less than 2 weeks to do an attempt (10 minutes per cube time limit).

I think the maximum is probably somewhere over 500 but less than 2000, assuming the person is allowed to take whatever breaks are necessary for eating and sleeping, but the 10 minutes per cube overall calendar time is enforced.

I don't think enough rooms is a problem. Generating lots of new rooms to use can be done very fast, especially if you're motivated by trying something this major.

I think it's sad, but my personal limit at my best was probably around 60, because of the time limit and because I was so slow. :-(

Rough details of the attempt (subject to change after discussion and feedback from you guys):

*Day 1 memo:*

MR 1-10
MR 11-20
MR 21-30
MR 31-40
MR 41-50
RR 1-50

MR 51-60
MR 61-70
MR 71-80
MR 81-90
MR 91-100
RR 51-100

R 1-100 (5th pass)

MR 101-110
MR 111-120
MR 121-130
MR 131-140
MR 141-150
RR 101-150

MR 151-160
MR 161-170
MR 171-180
MR 181-190
MR 191-200
RR 151-200

R 101-200 (5th pass)

MR 201-210
MR 211-220
MR 221-230
MR 231-240
MR 241-250
RR 201-250

MR 251-260
MR 261-270
MR 271-280
MR 281-290
MR 291-300
RR 251-300

R 201-300 (5th pass)

MR 301-310
MR 311-320
MR 321-330
MR 331-340
MR 341-350
RR 301-350

MR 351-360
MR 361-370
MR 371-380
MR 381-390
MR 391-400
RR 351-400

R 301-400 (5th pass)

MR 401-410
MR 411-420
MR 421-430
MR 431-440
MR 441-450
RR 401-450

MR 451-460
MR 461-470
MR 471-480
MR 481-490
MR 491-500
RR 451-500

R 401-500 (5th pass)

*Day 2 memo:*

MR 501-510
MR 511-520
MR 521-530
MR 531-540
MR 541-550
RR 501-550

MR 551-560
MR 561-570
MR 571-580
MR 581-590
MR 591-600
RR 551-600

R 501-600 (5th pass)

MR 601-610
MR 611-620
MR 621-630
MR 631-640
MR 641-650
RR 601-650

MR 651-660
MR 661-670
MR 671-680
MR 681-690
MR 691-700
RR 651-700

R 601-700 (5th pass)

MR 701-710
MR 711-720
MR 721-730
MR 731-740
MR 741-750
RR 701-750

MR 751-760
MR 761-770
MR 771-780
MR 781-790
MR 791-800
RR 751-800

R 701-800 (5th pass)

MR 801-810
MR 811-820
MR 821-830
MR 831-840
MR 841-850
RR 801-850

MR 851-860
MR 861-870
MR 871-880
MR 881-890
MR 891-900
RR 851-900

R 801-900 (5th pass)

MR 901-910
MR 911-920
MR 921-630
MR 931-940
MR 941-950
RR 901-950

MR 951-960
MR 961-970
MR 971-980
MR 981-990
MR 991-1000
RR 951-1000

R 901-1000 (5th pass)

*Day 3 memo:*

MR 1001-1010
MR 1011-1020
MR 1021-1030
MR 1031-1040
MR 1041-1050
RR 1001-1050

MR 1051-1060
MR 1061-1070
MR 1071-1080
MR 1081-1090
MR 1091-1100
RR 1051-1100

R 1001-1100 (5th pass)

MR 1101-1110
MR 1111-1120
MR 1121-1130
MR 1131-1140
MR 1141-1150
RR 1101-1150

MR 1151-1160
MR 1161-1170
MR 1171-1180
MR 1181-1190
MR 1191-1200
RR 1151-1200

R 1101-1200 (5th pass)

MR 1201-1210
MR 1211-1220
MR 1221-1230
MR 1231-1240
MR 1241-1250
RR 1201-1250

MR 1251-1260
MR 1261-1270
MR 1271-1280
MR 1281-1290
MR 1291-1300
RR 1251-1300

R 1201-1300 (5th pass)

MR 1301-1310
MR 1311-1320
MR 1321-1330
MR 1331-1340
MR 1341-1350
RR 1301-1350

MR 1351-1360
MR 1361-1370
MR 1371-1380
MR 1381-1390
MR 1391-1400
RR 1351-1400

R 1301-1400 (5th pass)

MR 1401-1410
MR 1411-1420
MR 1421-1430
MR 1431-1440
MR 1441-1450
RR 1401-1450

MR 1451-1460
MR 1461-1470
MR 1471-1480
MR 1481-1490
MR 1491-1500
RR 1451-1500

R 1401-1500 (5th pass)

*Day 4 memo:*

MR 1501-1510
MR 1511-1520
MR 1521-1530
MR 1531-1540
MR 1541-1550
RR 1501-1550

MR 1551-1560
MR 1561-1570
MR 1571-1580
MR 1581-1590
MR 1591-1600
RR 1551-1600

R 1501-1600 (5th pass)

MR 1601-1610
MR 1611-1620
MR 1621-1630
MR 1631-1640
MR 1641-1650
RR 1601-1650

MR 1651-1660
MR 1661-1670
MR 1671-1680
MR 1681-1690
MR 1691-1700
RR 1651-1700

R 1601-1700 (5th pass)

MR 1701-1710
MR 1711-1720
MR 1721-1730
MR 1731-1740
MR 1741-1750
RR 1701-1750

MR 1751-1760
MR 1761-1770
MR 1771-1780
MR 1781-1790
MR 1791-1800
RR 1751-1800

R 1701-1800 (5th pass)

MR 1801-1810
MR 1811-1820
MR 1821-1830
MR 1831-1840
MR 1841-1850
RR 1801-1850

MR 1851-1860
MR 1861-1870
MR 1871-1880
MR 1881-1890
MR 1891-1900
RR 1851-1900

R 1801-1900 (5th pass)

MR 1901-1910
MR 1911-1920
MR 1921-1930
MR 1931-1940
MR 1941-1950
RR 1901-1950

MR 1951-1960
MR 1961-1970
MR 1971-1980
MR 1981-1990
MR 1991-2000
RR 1951-2000

R 1901-2000 (5th pass)

  1. This is my take on how I will plan my attempt. I am no where prepared to pull this off in the near future, but it is good to have a plan to start with.
  2. I know the 50 cubes at once MR is not popular and may not go well with many MBLDers. But I want to stick with this spaced repetition scheme for this attempt. I am assuming 3:30 MR for each 10 pack.
  3. The execution order would be to do 1900-2000 cubes first, and then move onto cube 1.
  4. Sighted walking between tables should be allowed.
  5. Assuming 100 cubes can be kept on 1 table, a total of 20 tables would be needed, the setup would look like a chess simul hall.
  6. I currently have only 350 cubes and have made 450 rooms in my Anki deck, there is still a lot of work before I become even ready for the attempt. I also need to buy 16 more tables as I have 4 folding tables at my house.
  7. Streaming this attempt will be whole another ball game, I think 2-3 full time cameramen need to be hired for 5 days.
  8. Nutrition during memo will be crucial so a lot of brain food, and nuts should be consumed.
  9. A bit of exercise between stretches of memo would be ideal, keeping a gym cycle in the center of the room would be ideal, similar to how Timur Gareyaev does his chess BLD simul attempts.
  10. The execution would take around 11-11.5 hours assuming 20 seconds per cube exec speed, so I am counting the entirety of day 5 for execution.
 
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