## paring up dedges

beginner method

pairing up edges can be done almost entirely with the method shown below, the idea is a very familiar one, fix something, replace it with something else that isn't fixed to move the fixed group out of the way, then restore what part was broke while fixing the first group.

 (Rr)' F R F' (Rr)

now for the last 2 sets of edges, this can get a little tight because there is no third set of pieces to trade out, but these can be fixed easily with the following algorithm. if the matching pieces are diagonal from each other instead of across they can be swapped around into this position without doing any deep layer cuts, its just a matter of rearranging using such moves as L' F U'. this alg (like all) is easier to remember if you see what it's doing. first it knocks an edge out with its match, only reversed (Dd)'. then it removes that new pair and reinserts it upside down (F U F' L F' L' F), so that when you slice it back (Dd), the edges will match.

 (Dd)' F U F' L F' L' F (Dd)

this is a more advanced method of solving edges, known as "chain solving". there are two main ideas on this method, the two at once and the six at once method, however the revenge can be set up as many different cycles. they both have advantages and disadvantages to them.

two pairs at once

the two at once method is shown below. the idea is that when we match up a set of edges, we replace them with the correct group that when we slice back, it fixes another group. in this case we are fixing the blue/orange dedge, after we pair it up we replace that group with the correct edge (in the correct orientation also, otherwise it won't pair up) for fixing the green/red edge across from where our original pair was. for an in-depth description of this method check out chris hardwick's page. for a complete video walkthrough of this method click here. most of the great revenge solvers use the E ring to pair stuff up, but the M ring is also usable for good times.

 (Dd)' F' L F L' (Dd)

six pairs at once

this is the 6 at once method. it uses the same idea as the 2 at once, except it expands it further than just 2 pairs. this method accomplishes a lot at once, however some problems can arise in this method that won't happen in the 2 at once method. what happens in the cycle falls short (ie: the piece you need to use is already in the build ring). either the piece will be on the other inner slice, and you can match them up, shoot out that edge alone, then restore the centers to where they were before you matched those up, and continue the process with the new group. if the piece needed is on the same inner slice, then i will shoot the "newer" one out and replace it with a different group and finish the cycle. with good look ahead you can remember where that piece went when you shot it, so when you finish the cycle you can move it into the correct position to start the next cycle. this cube has all stickers on it, mostly because i'm too lazy set up just 6 sets of edges. this pairing will start with the Fru edge, and work counter clockwise around the cube, then come back the clockwise way. just the first cycle of this method is show below, for a complete walkthrough check out this video.

 B' D' B y B' D B y B R' B' R (Dd)' F' U' F y' R' D R y' D' R' D R (Dd)

 centers progress gauge master edges <30 seconds you have no problems finding pieces or dealing with weird cases. there is little or no delay between each sequence. intermediate edges <60 seconds You can quickly find the pieces you need, but sometimes there is a delay or the insertion ends up going wrong. as always slowing down is the key to make sure each turn is optimized for what you're trying to do. beginner edges 60+ seconds you can assemble the edges, but have difficult finding the pieces you need. the setup moves might be confusing or hard to see. be assured slow and steady practice will move your times down quickly.

on to the final solve

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copyright 2005 frank morris & clancy cochran