## Solved state for Square-1 under regulations 2009

Ron (2010-04-12 06:13:01 +0000)
Hi all, See attachment for a picture of a Square-1 at the Zaragoza Open 2010 last weekend. Given WCA Regulations 2009 what do you think should be the result for the competitor? 1) no penalty 2) +2 3) DNF In my opinion the regulations say the following: a) we count the number of moves away from solved b) in addition any misalignment larger than a boundary means an additional move away from solved c) if 1 move away: +2, if >1 move away: DNF My conclusion is that the result should be DNF. - The vertical move could be considered a misalignment or a full move, because the actual full move "/" is 180 degrees, not 90 degrees. - The horizontal move could be considered a misalignment or a full move, because you could see (x,y) as a full move, or every single part of it "x", "y" and "/". In this case I interpret every single part "x", "y" and "/" as a move. So this Square-1 is 2 moves away from solved: - a half "/" move, considered as a misalignment, but larger than 45 degrees, so 1 move away. - a "-1" move, not considered as a misalignment, so 1 move away. Total 2 moves away. What do you think? What should we change in Regulations 2010 to be able to make a clear decision in the future? Yes, we could use some pictures for solved state of Square-1, but I do not have time for that and we need to go final as soon as possible. Thanks, Ron
I would say DNF. But that's a pretty unclear case according to regulations :/
DanCohen (2010-04-12 11:43:17 +0000)
I don't see how this is a DNF. As you said, the "/" move is a full 180 degrees, so half of that turn (going by similarities in cube puzzles) would be 90 degrees. In this picture, the cube is turned exactly half of the full slice, which I feel should be an allowable misalignment. If you are seriously counting the (1,0) as a full move, then there is no point to having a misalignment rule. I definitely feel that the U/D layers should have the same standards as cubic puzzles, meaning 45 degrees is allowed. This is because from the solved state, the only possible 1 move sequences on the Ulayer are (1,0) and (-2,0). This allows inconsistencies, because depending on which direction the puzzle is over/underturned, you have a different standard for the misalignment (30 or 60 degrees). Making the standard 45 degrees for these layers allows a uniformity in the allowable misalignment. In this case, since the slice turn isn't counted as a misalignment (in my eyes), I feel this case should be counted as solved. It may look like a +2, but as we have the picture of the 4x4 in the regulations, you can have multiple misalignments and still have the puzzle considered solved.
Ron (2010-04-12 12:19:09 +0000)
Thanks for your feedback. My question is mainly about what Regulations 2009 say about this case, and whether/what we should change for Regulations 2010. To answer Dan's remarks under Regulations 2009. [quote:2drpv5cv]As you said, the "/" move is a full 180 degrees, so half of that turn (going by similarities in cube puzzles) would be 90 degrees.[/quote:2drpv5cv] Art. 10f says: "cube shaped puzzles: =< 45 degrees". Square-1 is a cube shaped puzzle. Since this is definitely beyond 45 degrees, it is counted as 1 move. [quote:2drpv5cv]If you are seriously counting the (1,0) as a full move, then there is no point to having a misalignment rule.[/quote:2drpv5cv] Square-1 is a puzzle (the only?) where a move can be done, even if the allowable misalignment has not been reached. In this case there is a move or a misalignment of 30 degrees. The question is whether we need to apply "Art. 10e4) If more than one move is needed, the solve is ruled DNF." In other words: when does a misalignment become a move? Only when the misalignment is beyond a boundary (in this case 45 degrees) or also when the misalignment is followed by a move of a perpendicular plane? Without the vertical move, the U position would not be a penalty, because of the MISALIGNMENT rule. With the vertical move, the U position suddenly becomes a move instead of a misalignment. Now if the vertical misalignment would be less than 45 degrees, and thus no move. But the U layer would say it is 1 move away. So that would be +2. I think according to Regulations 2009, we should interpret this case as: to solve this case we need to do "/" and "(-1,0) without /". That is 2 moves. [quote:2drpv5cv]It may look like a +2, but as we have the picture of the 4x4 in the regulations, you can have multiple misalignments and still have the puzzle considered solved.[/quote:2drpv5cv] I think that is a different case, because the vertical move is perpendicular to the horizontal move. For 4x4 this would look very different. To answer Dan's remarks under Regulations 2010. (We would need change to make this clearer) The vertical misalignment IMO should be considered a move, because it is >= 45 degrees. The horizontal misalignment IMO should be considered a move, because it is followed by another move (the vertical one). So result is DNF.
I have had this exact case before. The judge tried to give me a +2, but I insisted it was a DNF. Now that I reread the regulations, I think the case is +2. To be fair, the square-1 isn't exactly cubical (and even if it were, it has so little in common with other 'cubical' puzzles that it really can't be classified under the same level of rules. So, there are two ways to interpret this under the 2009 regulations: if you consider square-1 a cubical puzzle, then the limit is 45 degrees on each turning plane. In this case, the (1,0) is NOT a full move, and the / is a full move. Therefore, the case should be +2. However, the square-1 is not exactly cubical. And even if it were, it shares so little with the rest of the cubical puzzles that it's really incorrect to class it as such. Instead of using 45 degrees, I would consider square-1 under 10h. Because the rest of the puzzles allow you to go halfway to the next turn, I would take the horizontal tolerance to be <=15 degrees and vertical to be <=90 degrees. This would mean that the (1,0) IS a full move, but the half of a / is not (regulations say that <=45 degrees on cubic puzzles is solved, so the case at exactly 90 degrees on square-1 would be solved as well) In this case the result is also +2. In my opinion, this state is exactly 1.5 turns away from solved. Because the regulations say that exactly half of a complete turn is still valid, it should be considered +2. I would suggest using "halfway to the next turn" for square-1, rather than 45 degrees.