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Professor's Cube

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indistinguishable, the number of permutations of each set is reduced to 24!/(24) arrangements, all of which are possible. The reducing factor comes about because there are 24 (4!) ways to arrange the four pieces of a given color. This is raised to the sixth power because there are six colors. The total number of permutations of all movable centers is the product of the permutations of the two sets, 24!/(24).
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them make up the supporting frame and these have extensions which hold the rest of the pieces together. This allows smooth and fast rotation and created what was arguably the fastest and most durable version of the puzzle available at that time. Unlike the original 5×5×5 design, the V-Cube 5 mechanism was designed to allow
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can be flipped. Eleven can be flipped and arranged independently, giving 12!/2 × 2 or 12! × 2 possibilities (an odd permutation of the corners implies an odd permutation of the central edges, and vice versa, thus the division by 2). There are 24! × 12! × 2 possibilities for the inner and outer edges together.
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The Yau5 method is named after its proposer, Robert Yau. The method starts by solving the opposite centers (preferably white and yellow), then solving three cross edges (preferably white). Next, the remaining centers and last cross edge are solved. The last cross edge and the remaining unsolved edges
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Some variations of the cube have one of the center pieces marked with a logo, which can be put into four different orientations. This increases the number of permutations by a factor of four to 1.13×10, although any orientation of this piece could be regarded as correct. By comparison, the number of
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which groups the centers into one-colored blocks and grouping similar edge pieces into solid strips. This allows the cube to be quickly solved with the same methods one would use for a 3×3×3 cube, just a stretched out version. As illustrated to the right, the fixed centers, middle edges and corners
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The original Professor's Cube design by Udo Krell works by using an expanded 3×3×3 cube as a mantle with the center edge pieces and corners sticking out from the spherical center of identical mechanism to the 3×3×3 cube. All non-central pieces have extensions that fit into slots on the outer pieces
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The 24 outer edges cannot be flipped due to the interior shape of those pieces. Corresponding outer edges are distinguishable, since the pieces are mirror images of each other. Any permutation of the outer edges is possible, including odd permutations, giving 24! arrangements. The 12 central edges
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Another frequently used strategy is to solve the edges and corners of the cube first, and the centers last. This method is referred to as the Cage method, so called because the centers appear to be in a cage after the solving of edges and corners. The corners can be placed just as they are in any
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There are 54 centers. Six of these (the center square of each face) are fixed in position. The rest consist of two sets of 24 centers. Within each set there are four centers of each color. Each set can be arranged in 24! different ways. Assuming that the four centers of each color in each set are
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The V-Cube 5 mechanism, designed by Panagiotis Verdes, has elements in common with both. The corners reach to the center of the puzzle (like the original mechanism) and the center pieces hold the central edges in place (like the Eastsheen mechanism). The middle edges and center pieces adjacent to
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The Eastsheen version of the puzzle uses a different mechanism. The fixed centers hold the centers next to the central edges in place, which in turn hold the outer edges. The non-central edges hold the corners in place, and the internal sections of the corner pieces do not reach the center of the
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were marketed under the name "Professor's Cube" but currently, Barnes and Noble sells cubes that are simply called "5×5 Cube." Mefferts.com used to sell a limited edition version of the 5×5×5 cube called the Professor's Cube. This version had colored tiles rather than stickers. Verdes Innovations
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ABCube Method is a direct solve method originated by Sandra Workman in 2020. It is geared to complete beginners and non-cubers. It is similar in order of operation to the Cage Method, but differs functionally in that it is mostly visual and eliminates the standardized notation. It works on all
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A less frequently used strategy is to solve one side and one layer first, then the 2nd, 3rd and 4th layer, and finally the last side and layer. This method is referred to as Layer-by-Layer. This resembles CFOP, a well known technique used for the 3x3
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The original Professor's Cube is inherently more delicate than the 3×3×3 Rubik's Cube because of the much greater number of moving parts and pieces. Because of its fragile design, the Rubik's brand Professor's Cube is not suitable for
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of the 3×3×3, which keeps them from falling out of the cube while making a turn. The fixed centers have two sections (one visible, one hidden) which can turn independently. This feature is unique to the original design.
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can be treated as equivalent to a 3×3×3 cube. As a result, once reduction is complete the parity errors sometimes seen on the 4×4×4 cannot occur on the 5×5×5, or any cube with an odd number of layers.
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complexity of cubes, from 2x2x2 through big cubes (nxnxn) and only utilizes two easy to remember algorithms; one four twists, the other eight twists, and it eliminates long parity algorithms.
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The full number is precisely 282 870 942 277 741 856 536 180 333 107 150 328 293 127 731 985 672 134 721 536 000 000 000 000 000 possible permutations (about 283 duodecillion on the
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The Professor's Cube was invented by Udo Krell in 1981. Out of the many designs that were proposed, Udo Krell's design was the first 5×5×5 design that was manufactured and sold.
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possible arrangements. Seven of the corners can be independently rotated, and the orientation of the eighth corner depends on the other seven, giving 3 (or 2,187) combinations.
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is estimated at 10. Other variations increase the difficulty by making the orientation of all center pieces visible. An example of this is shown below.
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The record for mean of three solves solving a 5x5x5 cube blindfolded is 2 minutes, 27.63 seconds (including inspection), set by Stanley Chapel of the
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and many other names, depending on manufacturer) is a 5×5×5 version of the original Rubik's Cube. It has qualities in common with both the 3×3×3
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The record fastest time for solving a 5×5×5 cube blindfolded is 2 minutes, 4.41 seconds (including inspection), set by Stanley Chapel of the
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Center is an EastSheen 5×5×5 cube with multicolored stickers, which increase difficulty because the centers need to be in correct places.
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previous order of cube puzzle, and the centers are manipulated with an algorithm similar to the one used in the 4×4×4 cube.
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The world record for fastest average of five solves (excluding fastest and slowest solves) is 34.76 seconds, also set by
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An original Professor's Cube with many of the pieces removed, showing the 3×3×3 equivalence of the remaining pieces
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There are 98 pieces on the exterior of the cube: 8 corners, 36 edges, and 54 centers (48 movable, 6 fixed).
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This type of center misalignment occurred during a turn and can only occur with the original design.
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shows a 10-year old cuber named Franco, who solved a 5×5×5 cube in 1 minute and 47.12 seconds.
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Rubik's brand Professor's Cube (left), V-Cube 5 (center), and Eastsheen 5×5 (right)
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on December 15, 2019, with the times of 2:32.48, 2:28.80, and 2:21.62.
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The world record for fastest 5×5×5 solve is 32.52 seconds, set by
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of the corners is possible, including odd permutations, giving
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Little Big Shots Philippines: Franco | 10-year-old Cuber
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on November 10, 2023, at Virginia Championship 2023 in
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are solved, and then it can be solved like a 3x3x3.
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When the cube was marketed in 16:5x5x5 version of the Rubik's Cube 1341:United States Patent 20070057455 1249:- An 8×8×8 version of the puzzle 1132: 1108: 1095: 1080: 1067: 1052: 1039: 1024: 1011: 996: 983: 943:Rubik's Irish Championship 2024 937: 924: 912: 899: 887: 874: 862: 849: 837: 824: 784:Robinson Latkrabang Cubing 2024 778: 765: 750: 737: 722: 709: 694: 681: 666: 651: 611:Robinson Latkrabang Cubing 2024 605: 592: 580: 567: 555: 542: 530: 517: 505: 490: 406: 167: 155: 143: 121:Professor's Cube in solved state 2323:Rubik's Cube in popular culture 1570: 1557: 1544: 1530: 1516: 1468: 1443: 1419: 1395: 1363:Cubic Circular Issues 3 & 4 1243:- A 7×7×7 version of the puzzle 1237:- A 6×6×6 version of the puzzle 1231:– A 4×4×4 version of the puzzle 1219:– A 2×2×2 version of the puzzle 200: 150:A disassembled Professor's Cube 85:as the "Rubik's Wahn" (German: 1608:5x5 Rubik's Cube text solution 1540:Official 5x5x5 Ranking Average 1371: 1345: 1294: 1283: 1265: 378:Speedcubers usually favor the 1: 1526:Official 5x5x5 Ranking Single 1495:Official Results - 5x5x5 Cube 1258: 1154:or discuss this issue on the 460:Top 5 solvers by single solve 174:A disassembled Eastsheen cube 1330:United States Patent 6129356 1319:United States Patent 4600199 1203:Line Walker 2: Invisible Spy 918:Sheffield Spring - BBO 2023 868:WCA World Championship 2023 357: 7: 1210: 1058:Slow and Easy Selangor 2024 843:Virginia Championship 2023 104: 10: 2396: 2286:Thistlethwaite's algorithm 1290:Meffert's Professor's Cube 1187:A Filipino TV series from 1117:3:43.58, 3:47.91, 4:08.32 1089:3:00.62, 3:24.37, 3:15.30 1061:3:15.00, 2:28.17, 3:43.99 1033:2:59.09, 2:39.12, 2:49.30 1005:2:32.48, 2:28.80, 2:21.62 46: 2315: 2299: 2268: 2238: 2222: 2215: 2079: 2026: 1993: 1970: 1952: 1934: 1911: 1883: 1865: 1832: 1823: 1785: 1752: 1696: 1655: 1086:Glasgow Winter - SBO 2024 1729:5×5×5 (Professor's Cube) 893:Selangor Cube Open 2019 756:Chien Cubing Party 2024 586:Taipei Summer Open 2024 180:Stability and durability 2329:Rubik, the Amazing Cube 1724:4×4×4 (Rubik's Revenge) 1114:Manchester BLD Day 2023 1030:Selangor Cube Open 2019 561:Daegu Cold Winter 2024 162:A disassembled V-Cube 5 2307:World Cube Association 2182:Anthony Michael Brooks 2142:Krishnam Raju Gadiraju 1564:World Cube Association 1551:World Cube Association 1537:World Cube Association 1523:World Cube Association 1509:World Cube Association 1492:World Cube Association 436:Minneapolis, Minnesota 375: 367: 333: 189: 122: 114: 64: 56: 24: 2300:Official organization 1954:Truncated icosahedron 1189:ABS-CBN Entertainment 1143:may contain material 373: 365: 334: 187: 120: 112: 62: 54: 22: 1719:3×3×3 (Rubik's Cube) 1431:www.speedsolving.com 1407:www.speedsolving.com 1383:www.speedsolving.com 1152:improve this section 728:Big Time Manila 2023 234: 2375:Single-player games 1994:Virtual combination 1826:combination puzzles 1788:combination puzzles 1714:2×2×2 (Pocket Cube) 1045:Hill Pong Yong Feng 855:Hill Pong Yong Feng 352:observable universe 31:(also known as the 2291:Rubik's Cube group 2137:Prithveesh K. Bhat 2061:Rubik's Revolution 1936:Great dodecahedron 1688:Oskar van Deventer 1306:2010-03-27 at the 1253:Combination puzzle 1124:In popular culture 743:Kai-Wen Wang (王楷文) 511:DFW Megacomp 2024 447:Richmond, Virginia 376: 368: 329: 190: 123: 115: 98:Barnes & Noble 65: 57: 33:5×5×5 Rubik's Cube 25: 2352: 2351: 2264: 2263: 1989: 1988: 1753:Variations of the 1683:Panagiotis Verdes 1582:, 22 October 2017 1451:"Rubiks-Cube.org" 1184: 1183: 1176: 1121: 1120: 947: 946: 791: 790: 615: 614: 308: 2387: 2316:Related articles 2220: 2219: 2167:David Singmaster 2127:Shotaro Makisumi 2102:Jessica Fridrich 2080:Renowned solvers 1996:puzzles (>3D) 1944:Alexander's Star 1898:Pyraminx Crystal 1830: 1829: 1772:Nine-Colour Cube 1744:8×8×8 (V-Cube 8) 1739:7×7×7 (V-Cube 7) 1734:6×6×6 (V-Cube 6) 1656:Puzzle inventors 1642: 1635: 1628: 1619: 1618: 1590: 1589: 1588: 1587: 1574: 1568: 1561: 1555: 1548: 1542: 1534: 1528: 1520: 1514: 1506: 1497: 1489: 1480: 1479: 1472: 1466: 1465: 1463: 1462: 1453:. 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166: 164: 161: 154: 152: 149: 142: 106: 103: 48: 45: 39:and the 4×4×4 15: 9: 6: 4: 3: 2: 2392: 2381: 2378: 2376: 2373: 2371: 2370:Novelty items 2368: 2366: 2363: 2362: 2360: 2345: 2342: 2340: 2339: 2335: 2331: 2330: 2326: 2325: 2324: 2321: 2320: 2318: 2314: 2308: 2305: 2304: 2302: 2298: 2292: 2289: 2287: 2284: 2282: 2279: 2277: 2274: 2273: 2271: 2267: 2257: 2254: 2252: 2249: 2247: 2244: 2243: 2241: 2237: 2231: 2228: 2227: 2225: 2221: 2218: 2214: 2208: 2205: 2203: 2200: 2198: 2195: 2193: 2190: 2188: 2185: 2183: 2180: 2178: 2177:Eric Limeback 2175: 2173: 2170: 2168: 2165: 2163: 2160: 2158: 2155: 2153: 2150: 2148: 2145: 2143: 2140: 2138: 2135: 2133: 2130: 2128: 2125: 2123: 2120: 2118: 2115: 2113: 2110: 2108: 2105: 2103: 2100: 2098: 2095: 2093: 2090: 2088: 2085: 2084: 2082: 2078: 2072: 2069: 2067: 2066:Rubik's Snake 2064: 2062: 2059: 2055: 2052: 2051: 2050: 2049:Rubik's Magic 2047: 2045: 2044:Rubik's Clock 2042: 2040: 2037: 2035: 2032: 2031: 2029: 2025: 2019: 2016: 2014: 2011: 2009: 2006: 2004: 2001: 2000: 1998: 1992: 1981: 1978: 1977: 1975: 1973: 1969: 1963: 1960: 1959: 1957: 1955: 1951: 1945: 1942: 1941: 1939: 1937: 1933: 1927: 1924: 1922: 1919: 1918: 1916: 1914: 1910: 1904: 1901: 1899: 1896: 1894: 1891: 1890: 1888: 1886: 1882: 1876: 1875:Skewb Diamond 1873: 1872: 1870: 1868: 1864: 1858: 1855: 1853: 1850: 1848: 1845: 1843: 1840: 1839: 1837: 1835: 1831: 1828: 1822: 1816: 1813: 1811: 1808: 1806: 1803: 1801: 1798: 1796: 1793: 1792: 1790: 1784: 1778: 1775: 1773: 1770: 1768: 1765: 1763: 1760: 1759: 1757: 1751: 1745: 1742: 1740: 1737: 1735: 1732: 1730: 1727: 1725: 1722: 1720: 1717: 1715: 1712: 1710: 1707: 1705: 1702: 1701: 1699: 1697:Rubik's Cubes 1695: 1689: 1686: 1684: 1681: 1679: 1676: 1674: 1671: 1669: 1668:Larry Nichols 1666: 1664: 1661: 1660: 1658: 1654: 1650: 1643: 1638: 1636: 1631: 1629: 1624: 1623: 1620: 1614: 1611: 1609: 1606: 1604: 1601: 1600: 1581: 1580: 1573: 1567: 1565: 1560: 1554: 1552: 1547: 1541: 1538: 1533: 1527: 1524: 1519: 1513: 1510: 1505: 1503: 1496: 1493: 1488: 1486: 1477: 1471: 1457:on 2017-05-27 1456: 1452: 1446: 1432: 1428: 1422: 1408: 1404: 1398: 1384: 1380: 1374: 1367: 1364: 1359: 1353: 1348: 1342: 1337: 1331: 1326: 1320: 1315: 1309: 1305: 1302: 1297: 1291: 1286: 1278: 1274: 1268: 1264: 1254: 1251: 1248: 1245: 1242: 1239: 1236: 1233: 1230: 1227: 1224: 1221: 1218: 1215: 1214: 1205: 1204: 1200:In the movie 1199: 1196: 1195: 1190: 1186: 1185: 1178: 1175: 1167: 1157: 1153: 1147: 1146: 1141:This section 1139: 1130: 1129: 1116: 1111: 1106: 1103: 1098: 1093: 1092: 1088: 1083: 1078: 1075: 1070: 1065: 1064: 1060: 1055: 1050: 1047: 1042: 1037: 1036: 1032: 1027: 1022: 1019: 1014: 1009: 1008: 1004: 999: 994: 991: 986: 981: 980: 976: 973: 971:Fastest solve 970: 967: 966: 958: 940: 935: 932: 927: 922: 921: 915: 910: 907: 902: 897: 896: 890: 885: 882: 877: 872: 871: 865: 860: 857: 852: 847: 846: 840: 835: 832: 827: 822: 821: 817: 815:Fastest solve 814: 811: 810: 802: 786: 781: 776: 773: 771:Đỗ Quang Hưng 768: 763: 762: 758: 753: 748: 745: 740: 735: 734: 730: 725: 720: 717: 712: 707: 706: 702: 697: 692: 689: 684: 679: 678: 674: 669: 664: 661: 659: 654: 649: 648: 644: 641: 638: 635: 634: 626: 608: 603: 600: 598:Đo Quang Hưng 595: 590: 589: 583: 578: 575: 570: 565: 564: 558: 553: 550: 545: 540: 539: 533: 528: 525: 520: 515: 514: 508: 503: 500: 498: 493: 488: 487: 483: 481:Fastest solve 480: 477: 476: 468: 457: 455: 454:United States 450: 448: 444: 443:United States 439: 437: 433: 432:United States 429: 424: 422: 418: 417:United States 414: 407:World records 404: 400: 398: 392: 388: 384: 381: 372: 364: 355: 353: 350:atoms in the 347: 345: 324: 320: 316: 313: 310: 303: 299: 292: 288: 284: 281: 276: 272: 268: 265: 262: 259: 254: 250: 246: 243: 240: 230: 229: 228: 225: 221: 217: 215: 211: 206: 198: 196: 186: 170: 165: 158: 153: 146: 141: 140: 139: 137: 131: 127: 119: 111: 102: 99: 94: 92: 88: 87:Rubik's Craze 84: 80: 76: 74: 70: 61: 53: 44: 42: 38: 34: 30: 21: 2365:Rubik's Cube 2336: 2327: 2223:Speedsolving 2197:Collin Burns 2152:Frank Morris 2117:Rowe Hessler 2034:Missing Link 1885:Dodecahedron 1847:Pyraminx Duo 1755:Rubik's Cube 1728: 1649:Rubik's Cube 1584:, retrieved 1578: 1572: 1559: 1546: 1532: 1518: 1470: 1459:. Retrieved 1455:the original 1445: 1434:. Retrieved 1430: 1421: 1410:. Retrieved 1406: 1397: 1386:. Retrieved 1382: 1373: 1358: 1347: 1336: 1325: 1314: 1296: 1285: 1276: 1273:"5x5x5 Wiki" 1267: 1223:Rubik's Cube 1201: 1193: 1170: 1161: 1150:Please help 1142: 1073:Ezra Hirschi 905:Ezra Hirschi 818:Competition 573:Kai-Wen Wang 484:Competition 451: 440: 425: 410: 401: 397:Rubik's Cube 393: 389: 385: 379: 377: 348: 341: 226: 222: 218: 207: 204: 201:Permutations 191: 132: 128: 124: 95: 86: 77: 66: 37:Rubik's Cube 32: 28: 26: 2269:Mathematics 2251:CFOP method 2230:Speedcubing 2207:Mátyás Kuti 2162:Gilles Roux 2157:Lars Petrus 2087:Yu Nakajima 2039:Rubik's 360 2027:Derivatives 2013:MagicCube7D 2008:MagicCube5D 2003:MagicCube4D 1921:Impossiball 1913:Icosahedron 1852:Pyramorphix 1834:Tetrahedron 1786:Other cubic 1777:Sudoku Cube 1678:Tony Fisher 1673:Uwe Mèffert 1217:Pocket Cube 974:Competition 642:Competition 210:permutation 195:Speedcubing 136:speedcubing 69:Uwe Mèffert 2380:1980s toys 2359:Categories 2112:Kevin Hays 1867:Octahedron 1857:BrainTwist 1663:Ernő Rubik 1586:2022-01-23 1461:2020-05-11 1436:2020-05-21 1412:2020-05-21 1388:2020-05-21 1259:References 344:long scale 79:Ideal Toys 2281:Superflip 2216:Solutions 2187:Mats Valk 2147:Tyson Mao 1824:Non-cubic 1815:Gear Cube 1805:Dino Cube 1767:Bump Cube 1762:Void Cube 1164:July 2021 1156:talk page 536:NAC 2024 358:Solutions 317:× 311:≈ 282:× 269:× 260:× 247:× 75:in 1983. 73:Hong Kong 2202:Max Park 2132:Toby Mao 2122:Leyan Lo 1962:Tuttminx 1893:Megaminx 1842:Pyraminx 1810:Square 1 1704:Overview 1304:Archived 1247:V-Cube 8 1241:V-Cube 7 1235:V-Cube 6 1211:See also 933:2:50.28s 908:2:45.73s 883:2:39.12s 858:2:18.78s 833:2:04.41s 700:NAC 2024 672:NAC 2024 658:Max Park 497:Max Park 428:Max Park 413:Max Park 105:Workings 2256:Optimal 2239:Methods 1982:(2x3x3) 1104:3:53.27 1076:3:13.43 1048:3:09.05 1020:2:49.17 992:2.27.63 430:of the 415:of the 83:Germany 47:History 1972:Cuboid 1368:, 1982 1191:named 977:Times 954:": --> 798:": --> 774:39.13s 746:39.13s 718:37.90s 690:37.27s 662:34.76s 645:Times 622:": --> 601:35.16s 576:34.16s 551:33.10s 526:32.98s 501:32.52s 464:": --> 130:cube. 1926:Dogic 1800:Skewb 91:Japan 968:Name 956:edit 812:Name 800:edit 636:Name 624:edit 478:Name 466:edit 423:. 314:2.83 208:Any 27:The 2361:: 1501:^ 1484:^ 1429:. 1405:. 1381:. 1275:. 449:. 325:74 321:10 304:12 300:24 285:24 277:10 263:12 214:8! 1641:e 1634:t 1627:v 1478:. 1464:. 1439:. 1415:. 1391:. 1279:. 1177:) 1171:( 1166:) 1162:( 1158:. 1148:. 960:] 804:] 628:] 470:] 293:3 289:! 273:2 266:! 255:7 251:3 244:! 241:8

Index


Rubik's Cube
Rubik's Revenge


Uwe Mèffert
Hong Kong
Ideal Toys
Germany
Japan
Barnes & Noble


speedcubing
A disassembled Professor's Cube
A disassembled V-Cube 5
A disassembled Eastsheen cube

Speedcubing
permutation
8!
long scale
observable universe


Rubik's Cube
Max Park
United States
Grapevine, Texas
Max Park

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