# Solve a Rubik’s Cube Recap

#### Description

Rubik’s Cube expert Bob Burton demonstrates how to solve a Rubik’s cube.

#### Expert

Bob Burton

Bob is a math teacher at a high school in New York City. He received his B.A. in mathematics from Rutgers University and is currently pursuing a M.A. in mathematics education from the City College of New York. He also has a great interest in the sciences, especially physics and chemistry. Bob has been solving Rubik's Cubes since 2001 and competed in over twenty official contests all over the world. He has held several world records and national titles for Rubik's puzzles, including the Rubik's Magic and Square-1. At Rutgers University, Bob founded the RU Rubik's Cube Club, which hosted official competitions twice each year, attracting competitors from all over the country in addition to several international competitors. He has also developed several fingertricks for Rubik's Cube algorithms that are used by some of the fastest speedcubers in the world. Bob is also the webmaster for cubewhiz.com, a site designed for speedcubers to learn new tricks and become faster. He currently averages about twenty seconds to solve a Rubik's Cube with a personal best of 13 seconds. He has even solved the puzzle blindfolded in several official competitions. Bob currently lives with his family in Kearny, New Jersey.

#### Transcript

I am Bob Burton, Rubik's Cube Expert, and I am teaching you how to solve a Rubik's Cube. Now that you know how to solve a Rubik's cube, lets go through a full solve, and I will explain each step as I go. The first step is to solve the white cross. I first find the piece to line up with the orange center of the Rubik's cube. Then I place that piece up to the white with one move. I am now looking for more pieces where I can line up with the center that it belongs with. First I found green, I moved it up one step. I now found blue, lined it up with the center, and put that one up to match the white. The red is actually in place but backwards. So, I bring it down. It belongs here in between the blue and the green. So, I move it over, so that I can place the red edge in place and then line it back up. Next, I am solving the white corners of the Rubik's cube. I am putting the red, blue corner underneath where it belongs. Move the white side away, match it, and up. I am looking for more Rubik's cube corners that I can solve. The red, green one I see next, away, over and up. That freed the orange, blue one, line it up, away, over and up. I actually got one for free there, that was already in place. I now turn the Rubik's cube upside down and I am looking for edges to solve. First I see the red, blue edge, I face red, move it to the right, take the corner it belongs with, up, away, down, face the other side, put the block in front, up in place, and down. I look for another edge. This time I find red, green. We move it to the left because green is on the right, up, away and down. Look at the other face, put the block in front of me, up, over, down. I then find the blue, orange edge; face blue, orange is on the left, so I move to the right. The corner it belongs with, up, away and down. Face orange, the block goes in front, up, into place, and down. The last piece is the green, orange. Its already in place, so I move it to left, up, over and down. Again, face orange, block goes in front, up, over and down. I have got the yellow cross for free. Chances are in the course of solving the puzzle you do get a free step here and there. I am now looking for Rubik's cube corners that I can rotate three of them and keep the other one unrotated to have one solved at the end. If I try it here, this one will be wrong, this one will be wrong, this one will be right, and this one will stay wrong. So, this is the right place; up, over, down, over, up, top twice, down. I then put the solved corner in front left and do it again; up, over, down, over, up, top twice, down. I am now putting one solved edge of the Rubik's cube in the back. In fact, orange is already solved, and the other three are wrong; down twice, left, up, left, down, right, down, right, down, left, down. I will do it one more time; down, down, left, up, left, down, right, down, right, down left, down. The edges are now solved, and I need to solve the corners of the Rubik's cube. I don't have any three piece blocks. So, I will just do the algorithm I know; down, front, down, back twice, up, fix the front, down, back twice, right twice. The solved block goes in the front left. Do it again; down, front, down, back twice, up, fix the front down, back twice, right twice. The Rubik's cube is now solved.

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