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魔方吧·中文魔方俱乐部 › 论坛 › 『 理论篇 』 › ★ N阶正方体魔方变换理论区 (Core Puzzle Theory) › 一个理论问题：
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一个理论问题： [复制链接]

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透魔

有空了学学4D二阶

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魔方破解达人 八年元老

41#
发表于 2008-5-6 12:07:11 |只看该作者
问下乌木先生，您用的是什么软件啊？我也想试试<br>

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pengw

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魔方理论探索者 八年元老

42#
发表于 2008-5-6 13:08:58 |只看该作者
回40楼：提示，一个簇有二个偶元置换，是不是可以用三置换清除掉？在魔方上，就是爱因斯坦也得守规则，这里根本不可能掷色子，一切都在预言中。如果大家不相信，请为我出题，在任意阶上。

[ 本帖最后由 pengw 于 2008-5-6 13:13 编辑 ]

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魔方理论探索者 论坛建设奖 爱心大使 十年元老

43#
发表于 2008-5-6 14:49:11 |只看该作者

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40楼更新了，原来的40楼属于走弯路的中间结果，所以会有顶层一个簇内要求两对二置换。既然更新后的40楼顶层可以纠正好，说明原来的40楼中间结果之顶层也可纠正－－你42楼说得对。

[ 本帖最后由 乌木 于 2008-5-6 14:55 编辑 ]

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魔方理论探索者 论坛建设奖 爱心大使 十年元老

44#
发表于 2008-5-6 14:55:03 |只看该作者

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就是下载区给出的“Puzzler2.05”和“Puzzler2.15”，有多种多样的虚拟魔方。2.05有时会发生鼠标做转层操作时转不动，不知何故，也许我下载的版本较旧。

[ 本帖最后由 乌木 于 2008-5-6 15:02 编辑 ]

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魔方理论探索者 八年元老

45#
发表于 2008-5-6 16:33:48 |只看该作者
<P>R1=B1+E11+E12<BR>R2=B2+E11+E12<BR>--------------------------<BR>R1+R2=B1+B2+E11+E11+E12+E12<BR>由于同一个簇发生二次偶元置换，而自行消解<BR>R1+R2=B1+B2<BR>因此，不用动手，直接用基本扰动方程进行加运算就可以得出B1、B2簇可以分别发生一次偶元置换，结果不一定非要是二个二元置换。也可以是二元置换配四元置换或六元置换。只要是B1、B2簇是二个偶元置即可。</P>
<P>&nbsp;</P>
<P>说到玩魔方，没有谁会相信，理论区版主竞然没有完整地复原过超过三阶或低于三阶的魔方，三阶最快也就36秒，而且这是N年前的事儿，但这是事实,愧对各位。<BR>--------------------------<BR>通过这个例子，一个明确的启示是，只要重视魔方理论，我们会省去很多事，并拥有随心所欲，透视一切状态或变换的魔力，我想，这应该是玩魔方的一个境界。理解了三年前推出的N阶定律，就会拥有这样的能力。只有明白了什么样的变换是可行和不可行的，才会拥有计算状态数的首要条件。这就是为什么说，状态数预言是对状态定律的终极检验。</P>
<P>--------------------------</P>
<P>当前N阶定律由于论坛迁移，内容受到较大的破坏，本人正在更新中，不久将推出更新版。</P>

[ 本帖最后由 pengw 于 2008-5-6 18:12 编辑 ]

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魔方理论探索者 八年元老

46#
发表于 2008-5-6 16:41:39 |只看该作者
<P>下一个题目是，七阶魔方上，B1、B2簇还可以像六阶一样，分别发生一次偶元置换，其它块保持不变？下面是七阶簇图</P>
<P>&nbsp;</P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>F2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>H</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>F2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>F1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>M</FONT></SPAN></P></TD></TR>
<TR style="HEIGHT: 1cm; mso-yfti-irow: 4; mso-height-rule: exactly">
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>E11</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>C2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>F2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>C2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>E12</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B2</FONT></SPAN></P></TD></TR>
<TR style="HEIGHT: 1cm; mso-yfti-irow: 5; mso-height-rule: exactly">
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>C1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>E12</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>F1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>E11</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>C1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B1</FONT></SPAN></P></TD></TR>
<TR style="HEIGHT: 1cm; mso-yfti-irow: 6; mso-height-rule: exactly; mso-yfti-lastrow: yes">
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>A</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>M</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B2</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>B1</FONT></SPAN></P></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; WIDTH: 1cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 1cm; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=38>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US><FONT face="Times New Roman" color=#000000 size=3>A</FONT></SPAN></P></TD></TR></TBODY></TABLE></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt" align=center><SPAN lang=EN-US style="FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt"></SPAN></P>

[ 本帖最后由 pengw 于 2008-5-6 19:27 编辑 ]

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乌木

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魔方理论探索者 论坛建设奖 爱心大使 十年元老

47#
发表于 2008-5-6 19:26:40 |只看该作者
理论重要，说是这么说，可是我掌握不了，看不懂那种式子，奈何！

7阶B1棱簇、B2棱簇各有一对互换后，F1簇（下图黄线）和F2簇（下图天蓝线）也各有一对互换了。下图是否“终极”态？即是否无法单单纠正F1、F2簇而不动B1、B2簇的现状？
        
            7阶全色互换两棱时中心块情况.GIF

[ 本帖最后由 乌木 于 2009-2-13 18:54 编辑 ]

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魔方理论探索者 八年元老

48#
发表于 2008-5-6 19:38:22 |只看该作者
R1=B1+E11+E12+F1<BR>R2=B2+E11+E12+F2<BR>----------------------------<BR>R1+R2=B1+B2+E11+E11+E12+E12+F1+F2=B1+B2+F1+F2<BR>从上面的计算不难看出,乌木的给出的图已是终极结果.

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pengw

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魔方理论探索者 八年元老

49#
发表于 2008-5-6 19:43:49 |只看该作者
乌兄不必恢心,虽然本人用起这样式子来随心所欲,但是,当初在归纳N阶定律时,也是痛苦万分,整整一周时间,冥思苦想.不要急,也许新版N阶定律发布后,可以改善可读性.

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魔方理论探索者 八年元老

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发表于 2008-5-6 19:46:45 |只看该作者
最后一题,八阶魔方一条边上六个棱块整体原地调头180度,可行吗?请画出八阶簇图进行分析.

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