4 years ago
Hello - been a while since I last posted a blog! I thought it would be nice to post some reconstructions/thoughts on my 3x3 solves from last weekend's competition, Cube For Cambodia 2018. The averages from rounds 1 and 2 were decent, but round 3 was a bit below par.
Some things I noticed/have been working on.
Thanks to Brest for doing the reconstructions for the Round 1 solves! :)
Round 1: 6.26 average
Scramble 1: B D L F U2 F2 D B U F2 D' B' U2 F B L2 D2 B2
The blue cross on this scramble is very straightforward, and the yellow & red are pretty easy too. I think I took a while to decide which one I'd solve in my inspection. It was fairly simple to see the orange/white pair would form during the cross, but to solve it afterwards would require a rotation.
Inspection: x y'
Cross: F R U L2'
1st pair: U y' U R U' R'
The orange/yellow pair would have required another rotation, so instead of that I did the rather inefficient white/red pair. Both options were probably just as good.
2nd pair: R' U R U L' U L U' L' U L
At this point, all edges are oriented on the cube after a y rotation, which is very handy.
3rd pair: y R' U R U' R U R'
4th pair: U R' U' R
Technically, I know how to recognise this ZBLL (or EPLL skip), and am working on the pi 2GLL set, so skipping EP here is only a little bit lucky :p
COLL: U2' R U2' R2' U' R2 U' R2' U2' R U
4.92 seconds, 40 moves (STM), 8.13 TPS
I think I missed the easy blue cross on this solve, and so ended up doing a 9 move cross. Not great.
Inspection: y x
Cross: D R' D' R U D2 R' F R
1st pair: y L' U L R U' R'
I solved pair 2 and effectively did a y2 rotation to place the solved pairs in the back.
2nd pair: y' d R' U' R
3rd pair: D' L' U L (U D)
4th pair + VLS: R U R' U U R U' R' U R U' R' U' R' F R F'
Slight mistake in PLL recognition (thought it was a U perm). This solve had a few lockups/pauses as well.
PLL: U R' U2' R' D' R U' R' D R U R U' R' U' R U
6.97 seconds, 60 moves (STM), 8.61 TPS
This was a nice one. Keyhole extended cross was straightforward, the only issue might have been the rotation. I was also able to see that the green/red pair would end up as a simple insertion case, so made sure to do a u' at the end of the X-Cross to avoid a rotation.
X Cross: F' R' D' R y R U' R' u'
2nd pair: U' R U R'
Here, the green/orange pair can be solved without a rotation, yet I rotated to solve the blue/orange one. This was most likely because I saw the blue/orange F2L pieces during the first two pairs, and perhaps because my thumb would have been blocking the green/orange corner piece.
3rd pair: y' L' U2 L U' L' U L
4th pair: d U R' U' R U R' U' R
OLL: U' R U2' R' R' F R F' R U2' R'
Brest said the OLL lockup cost about 0.26 seconds lol.
4.22 seconds, 38 moves (STM), 9.00 TPS
Scramble 4: R U L U D L B U' F' R' U F' B D2 R2 D2 R2 F2 B
Planned cross and first pair in inspection for this one, but it wasn't a particularly easy start.
Cross: r' (U' D') R' F R2 u'
1st pair: R U2' R' U2 L' U' L
This is where it all went downhill, I mis-inserted the second pair and then used a couple of rotations to fix it up :(
2nd pair: R' U' R y U R U' R' y' U' L U L'
3rd pair: y U' L' U L U L' U' L
Nice OLS case saved the solve from being a complete disaster, thankfully!
4th pair + OLS: U' R' F R F' R U R'
PLL: R' U' F' R U R' U' R' F R2 U' R' U' R U R' U R U
7.27 seconds, 64 moves (STM), 8.80 TPS
I spent like 5 seconds trying to find a good cross solution, to no avail.
Inspection: x2 y
Cross: D' L' R' F R D' R' D2
First two pairs were nice and easy, and left me with the remaining two F2L edges oriented. Overall, it was the lockups in F2L and OLL which slowed this solve down.
1st pair: R U R2' U' R
2nd pair: y' L' U L U' L' U' L
3rd pair: R U R' U2 R U' R'
4th pair: U R' U R U2' R' U R
LL was very standard as well.
OLL: U2' R U B' U' R' U R B R'
PLL: R U R' F' R U R' U' R' F R2 U' R' U'
6.89 seconds, 63 moves (STM), 9.14 TPS
Round 2: 6.32 average
Yeah, there's hardly anything on this scramble, I went with the only cross with a piece solved, which was red, and tried to plan a decent solution and first pair. The pair I saw in inspection was the blue/yellow pair, as the edge didn't move during the cross solution, and the corner went to the top layer. Unfortunately the first pair required a rotation, but I was able to solve it into the back.
Inspection: y2 z'
Cross: F' R' F D F D2
1st pair: U y' R' F U' F' R
The blue/white pair would have been a better choice for pair 2, but I saw the green/yellow one first, and it wasn't too bad either.
2nd pair: U' R U' R' U y' L' U L
I have no idea why I rotated in the y' direction for the last two pairs, but somehow I managed to execute them quite well with my left hand. The rotation directions were definitely a mistake though. The only benefit I can think of is that (y' U) is probably slightly faster to execute in one motion than (y U).
3rd pair: y' U L U L' U' L U L'
4th pair: y' U L U2 L' U' L U L'
OLL: U2' r' R2 U R' U R U2' R' U M'
PLL: U y x R2' D2 R U R' D2 R U' R
6.54 seconds, 57 moves (STM), 8.72 TPS
Again, only one cross colour with solved edges, so I was immediately drawn to orange. However in hindsight, white would probably have been a better choice. After the first two moves of the cross (R D), it's better to do F L2 than L2 F to finish off the cross, because it moves the green/yellow edge into the top layer and sets up an easy rotationless first pair.
Cross: R D x U L2' x' (D2 U')
1st pair: R U R' U R U' R'
Always a bit risky to solve two diagonal pairs to start F2L, but the blue/white pair was too easy to pass up.
2nd pair: L' U L U' L U L'
After this, I used keyhole to solve pair 3, and whilst restoring the D layer, did a U' to begin solving the final pair.
3rd pair: D2 L' U L (D2 U')
4th pair: y R U' R' U' R U' R' U R U' R'
I used a different OLL alg to avoid the AUF move. I also think it flows a bit more nicely than the standard alg.
OLL: R' U' R' F R F' R U' R' U2 R
PLL: U2' R2 U R' U R' U' R U' R2 (D U') R' U R (D' U2')
6.46 seconds, 65 moves (STM), 10.06 TPS
After the first two scrambles, I was kind of spoiled for choice here, and chose yellow instead of red. However, the yellow cross solution was 2 gen and I was able to see a rotationless first pair pretty easily, so I stuck with it.
Cross: R D2 R D' R'
1st pair: U R U' R' L' U' L
Big mistake here not seeing or tracking the blue/orange pair. I believe I mis-inspected, and thought the green/orange corner would end up in its slot, so ended up doing a bunch of moves which didn't solve an F2L pair.
Do Nothing: y U' R' U' R U R' U' R
2nd pair: y' R U' R2' U' R
After this, I realised I'd made a mistake and would need to fix it.
3rd pair: D2 U' R U R' D2
4th pair + Summer Variation: R U R' U2' R U2' R' U R U' R' U R U2' R'
PLL: y' x' R2 D2 R' U' R D2 R' U R'
5.97 seconds, 55 moves (STM), 9.21 TPS
This solve was a bit of a disaster. Locked up a bunch in cross and F2L and then made a pair mistake as well, which basically killed the solve.
Cross: R2' D' r2 U' r' u'
1st pair: U y' R U2' R' U R U' R'
2nd pair: y U2' R U R' U R U' R'
After the first two pairs, I did a y rotation for some reason, perhaps because I wasn't looking ahead very well and didn't notice that the blue/white pair could have been solved into the back-left slot without a rotation. Also, because the two solved pairs are occupying the front two slots, I know I'm likely going to have to rotate in the y direction to finish F2L anyway, but I started to do it one pair too early, and then realised as soon as I started.
For some reason, I also forgot how to solve F2L pairs here.
Do Nothing: y y' U' U2 L U2 L' U L U' L'
3rd pair: y U R U2' R'
(The reason for doing U R U2' R' instead of R U' R' is probably an attempt to get a better OLL case... it was way too late for that.)
4th pair: y R U' R' U R U R' U R U' R'
OLL: U2' R' U' R U' R' U2 R F R U R' U' F'
PLL: U R' U2' R U2' R' F R U R' U' R' F' R2 U'
10.39 seconds, 75 moves (STM), 7.24 TPS
Orange cross is by far the best option - the only tricky part is figuring out which pairs to solve first.
I ended up ignoring the blue/yellow in inspection, and planned to solve the green/white, followed by the green/yellow
Cross: r' R2 (D2 U')
1st pair: R' U2 R U' R U R'
2nd pair: y' U R U' R' U' L U L'
Whilst executing the second pair, it was fairly easy to track the blue/yellow pair and insert it quickly right afterwards.
3rd pair: y' U' R U R'
At this point, all the corners are solved. Sadly, I'm not quite pro enough to do two 3-edge cycles in a 3x3 speedsolve.
4th pair: y U R U' R' d' L' U L
OLL: U' R U R' U' R' F R F'
PLL: U' R U' R U R U R U' R' U' R2 U2'
5.43 seconds, 53 moves (STM), 9.76 TPS
Final Round: 6.98 average
Scramble 1: D B2 D R2 F2 U2 F' D B U2 F2 R2 D' L2 B' F2 L U2
I knew the start of this solution was going to be quite awkward to execute, so I tried to do it quite safely to ensure I didn't make any mistakes. Starting with an X-Cross with the pair solved in the back is quite nice.
Inspection: x2 y'
Cross: U' F (U D') F R' U' L U L' D
Before inserting that green/red edge to make the extended cross, I saw the blue/orange pair and was able to track it very easily. However, I went straight into solving that pair, and missed the solved green/orange one.
2nd pair: U R U R' U2 R U' R'
This was doubly bad as it left a really awkward case for pair 3, which I solved using two rotations.
3rd pair: U y' R U' R' U2 y' R' U' R
4th pair: L' U L U L' U' L
OLL: U R U R' U R U' R' U' R' F R F'
A very small detail here is that I did the AUF before PLL in the anti-clockwise direction so that I could simultaneously do the regrip that was required for the V perm.
PLL: U2' R' U R' U' y R' F' R2 U' R' U R' F R F
6.64 seconds, 62 moves (STM), 9.34 TPS
It probably would have been a nice idea to use the 1x1x3 block in a better fashion, but I didn't see anything particularly easy on white or orange, so I decided just to use it as an F2L pair.
Partial cross: U' R2' F D2
1st pair: U L' U' L
Finish cross: U' r U' r'
There was a slight regrip mistake before pair 2.
2nd pair: U' R U2' R' U2 R U' R'
At this point, it gets a little bit tricky, as I don't see my first pair. This is a result of solving my first two pairs into the front slots on the cube.
3rd pair: y R U2' R' y R U R'
4th pair: y' U R U' R'
Whilst the 3rd and 4th pairs are reasonably move-efficient, the rotations were quite costly and hurt the flow of the solve.
OLL: U2 R U B' U' R' U R B R'
PLL: U' R2 U R' U R' U' R U' R2 (D U') R' U R (D' U) (Missed the last U move here on the first try, lol)
6.97 seconds, 57 moves (STM), 8.18 TPS
A few good options on this scramble, I ended up going with green and inserting the first pair before the final cross edge.
Inspection: y2 x
X-Cross: L F' L' U' L' U L U' L' R2
I was tracking the orange/yellow pair during the extended cross, so don't really mind too much that I missed the easier red/yellow pair after the R2.
2nd pair: L' U L U R U R'
Huge mistakes here, panicked a little bit after the fast start and did a bunch of rotations when they were unnecessary.***
3rd pair: y U R R' U R U2' R' U y' R' U' R
For the 4th pair, I wanted to avoid a dot case, so did an alternative solution.
4th pair: y' R U' R' U' R U R' U' R U R'
Definitely should have done OLLCP here...
OLL: U r U' r2' U r2 U r2' U' r
PLL: U x' R U' R' D R U R' D' R U R' D R U' R' D'
7.21 seconds, 66 moves (STM), 9.15 TPS
***A much better (multislotting) solution for the last two pairs would have been U y' R U2' R' U y' R' U' R, U L' U L, which leaves a nice ZBLL finish.
The most obvious cross is on orange, but the green/yellow pair was a little bit hard to deal with. Luckily, I was able to inspect enough to see that the first two pairs would actually become a really nice multislotting case.
Cross: D R D' R' U' L' (U2' D2')
1st and 2nd pair: R U' R2' U' R2 U' R'
3rd pair: y' U' R U' R' U' F U' F'
The solve is going very well, and the last pair is already set up. This is where everything goes downhill - I mess up the last pair insertion really badly, which messes with my OLL recognition, and so I then recognised the OLL case incorrectly. With half decent execution for the rest, it would have been a pretty straightforward sub 7, but it ends up being an 8.
4th pair: U' R' F R F'
OLL attempt 1: U' r U' r' r U r'
OLL: R U2 R' U' R U' R' F R U R' U' F'
PLL: U' R2' F2 R U2 R U2' R' F R U R' U' R' F R2
8.03 seconds, 64 moves (STM), 7.97 TPS
In inspection I was able to see that the white/red and the orange/yellow pairs would end up in the top layer, and so those would be the pairs I'd solve first. Important here is to solve them with only 1 rotation.
Cross + 1st pair: r' R D R' D2 R2 U' R' U y' R' U' R
2nd pair: U L' U' L U' L' U L
The next pair is decent, but at this point my lookahead to the last pair wasn't going very well - I think I semi-guessed that the yellow sticker in the BDL position meant that the back-left corner was solved and I would need to just flip the BL edge, which was an incorrect guess - which lead to the rotation error.
3rd pair: R U R' U2' R U R'
4th pair + Winter Variation: y y' U L U L' y (U' U) R' U R U2' R' U R U2' R' U' R
Luckily I got an A perm - I like these :)
PLL: x R2' D2 R U R' D2 R U' R B'
6.76 seconds, 54 moves (STM), 7.99 TPS
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