huong dan choi rubik

sevenup - baothai - anima99998 www.gamevn.com Th Gii C

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Hng dn chi rubik mt cch n ginI/ Gii thiu v rubik:-Rubik l mt khi lp phng gm 6 gm 6 mu khc nhau l , cam, vng, trng, xanh l v xanh dng. Thng thng th mt s i din vi mt cam, mt vng i din vi mt trng v mt xanh l i din vi mt xanh dng. Nhim v ca bn l phi gii chng chng c th tr li 6 mu khc nhau mi mt.-Rubik c 6 cc khng di chuyn c, chng s nm mt v tr c nh, l nhng cc trung tm (hay cn gi l cc gia), chng s gip bn nh v c mt no bn s lm.-Rubik c 20 cc di chuyn c, bao gm 8 cc c 3 mt (cc gc) v 12 cc c 2 mt (cc cnh). Cc gia s khng i c v tr ca cc gc v ngc li.II/ Hng dn chi rubik:Trc khi i vo hng dn cch chi, ti s quy nh mt s iu nh sau:+ Mt ng trc (nh hnh l mt xanh l) s l mt chnh (k hiu C).+ Mt ng sau (nh hnh l mt xanh dng) s l mt sau (k hiu S).+ Mt bn tri (nh hnh l mt ) s l mt tri (k hiu T).+ Mt bn phi (nh hnh l mt cam) s l mt phi (k hiu P).+ Mt trn (nh hnh l mt vng) s l mt np (k hiu N).+ Mt di (nh hnh l mt trng) s l mt y (k hiu D).+ Khi quay mt mt theo chiu kim ng h ca mt ang lm, ti s s dng ch (v d TDS ngha l quay theo th t mt tri, y, sau theo chiu kim ng h).+ Khi quay mt mt theo chiu ngc chiu kim ng h ca mt ang lm, ti s s dng ch v theo sau mt du ( v d TDS ngha l quay theo th t mt tri, y, sau theo chiu ngc chiu kim ng h)By gi chng ta s i vo phng php gii.+ Khi quay 2 ln, ti s s dng ch v theo sau l s 2 (v d T2D2S2 ngha l quay theo th t tri, y, sau 2 ln), khi quay 2 ln khng nht thit phi quay theo chiu kim ng h hoc ngc chiu kim ng h.+ Cc cc nm di cng (bao gm 4 cc gc, 4 cc cnh v 1 cc gia) l tng 1, cc cc nm gia (bao gm 4 cc cnh, 4 cc gia) l tng 2 v cc cc nm trn cng (bao gm 4 cc gc, 4 cc cnh v 1 cc gia) l tng 3.+ Trong hnh ca cc rubik, hnh v tr no c mu s l v tr cc bn cn quan tm n, cn v tr no c mu xm cc bn s khng cn quan tm n mu ca n.


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+ Lu c bit: t lc lm giai on 1 n khi hon thnh, cc bn khng c i v tr ca cc mt khc lm mt np, cc mt xung quanh nh C, T, P, S th c th thay i v tr cho nhau nhng mt N v D khng c thay i. V d y ti s lun mt trng lm mt D v vng lm mt N.

GIAI ON 1:Thng thng th mi ngi s s dng mt trng lm mt chnh gii, nhng chng ta s quay mt trng xung mt vng quay ln trn (mt lt sau cht ta s quay ngc li). giai on ny, nhim v ca bn l lm cho tt c cc cnh c mu trng bao quanh cc gia c mu vng, nh sau:


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giai on 1, cc bn s c cc trng hp sau (cch gii ti ghi di mi trng hp):

Cch gii: C

Cch gii: C


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Cch gii: C2

Cch gii: CP(C) hoc CT(C) (khi c mt cc cnh c mu st ngay mt chnh th lm thm mt bc trong ngoc, v d:

Cch gii: CPC hoc CTC


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Cch gii: C hoc C ri bn lm nh 2 trng hp u tin.GIAI ON 2: giai on ny, bn s quay ngc cc cc cnh c mu trng xung quanh cc gia mu vng sao cho cc cc cnh mu trng c mu mt cn li trng vi mu cc cc gia cc mt tri, phi, chnh v sau, nh sau:

giai on ny, bn ch c mt cng thc chung l C2, bn s quay 1 cc cnh c mu trng xung quanh cc gia mu vng lm giai on 1 sao cho mu cn li cc cnh c mu trng trng vi cc gia mt chnh. V d:


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Sau bn thc hin cng thc C2, bn cng quay cc mt cn li sao cho nh ti m t trn v thc hin li cng thc C2, nh vy cc bn lm xong giai on 2.Lu : mt s bn s khng lm giai on 1 m chuyn hn sang giai on 2 lm, l mt s bn quen lm ri, nhng nu cc bn mi bt u lm, ti khuyn cc bn nn lm giai on 1 ri mi chuyn sang giai on 2, khi no cc bn quen ri mi b giai on u, v nu cc bn mi bt u chi m lm thng giai on 2 s rt kh khn.GIAI ON 3: giai on ny, bn s lm ht tng 1 ca cc rubik sao cho ng vin ngoi ca cc rubik trng nhau mi mt, nh sau:

Nhim v u tin ca cc bn giai on 3 l tm 1 cc gc c mu trng nm trn tng 3, nu khng c cc gc c mu trng no trn tng 3 th bn thc hin cng thc sau: PNP hoc PNP (cng thc no cng c, sau khi bn quen lm giai on 3 bn s bit s dng thm 1 s cng thc


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na sao cho ph hp) v lc ny tt c cc cc gc c mu trng nm gc tng 1. Sau s c 2 trng hp xy ra:+ Trng hp mu trng nm trn ng vin ngoi ca tng 3, bn s xoay mt np sao cho mu cn li cc gc trng vi mu ca cc gia cc mt T, P, C, S. C 2 trng hp nh nh sau (cch gii ghi di mi trng hp):

Cch gii: PNP

Cch gii: CNC hoc cch gii thng dng hn l i mt phi (mt xanh) thnh mt chnh (trong trng hp ny), sau s dng cng thc:

TNT+ Trng hp mu trng nm trn mt np, nh sau:


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Cch gii: PN2PN (Sau lm ging trng nh 1: PNP)Cc bn thc hin tip cc kiu ny i vi cc mt khc, nh vy cc bn lm xong tng 1 ri.GIAI ON 4: giai on ny, bn s lm ng ht mu ca ng vin tng 2, nh sau:

giai on ny kh d dng, v nu cc bn lm quen ri s lm rt nhanh phn ny (lm nhanh hn nhau l giai on 3 v 4). Chng ta c 3 trng hp xy ra giai on ny, nh sau:


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Cch gii: NCNCNPNP

Cch gii: NPNPNCNC

Cch gii: Cc bn lm nh trng hp 1 hoc 2, sau khi quay xong cc bn s quay thm N2 ri lp li trng hp 1 hoc 2 tng ng.


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GIAI ON 5: giai on ny, cc bn s phi lm xut hin ch thp (du +) ging giai on 2 nhng l tng 3 thay v tng 1 nhng chng ta cha quan tm n n c ng mu vi cc mt xung quanh hay khng (chng ta s lm sau). Nh sau:

giai on ny chng ta c 3 trng hp:

Cch gii: PNCNCP


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Cch gii: S dng cng thc trng hp 1, sau n li tr li trng hp 1, lm li cng thc trng hp 1 thm 1 ln na. (gi s t cng

thc trng hp 1 l A th chng ta s lm A2)

Cch gii: S dng cng thc trng hp 1, sau n tr li trng hp 2, lm tip theo cch trng hp 2.

GIAI ON 6: giai on ny, cc bn lm ng mu ca ch thp (du +) tng 3. Nh sau:


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giai on ny cc bn xoay rubik sao cho c t nht l 2 cc cnh ng mu vi xung quanh, sau chng ta c 2 trng hp, ti s s dng hnh nh ca hnh ch thp (du +) trn mt np thay i:

trng hp ny cc bn thy rng mu ca cc cnh mt T v C ng, ch cn mt S v P sai.

Cch gii: PN2PNPNPN


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trng hp ny, cc bn s qua bc trung gian l lm cng thc nh trng hp 1, sau n s tr li trng hp 1, thc hin li trng hp 1.GIAI ON 7: giai on ny, cc bn s lm ng v tr (ng hoc khng ng mu) ca cc cc gc tng 3, giai on ny c rt nhiu trng hp, do ti ch v mt t hnh minh ha, ti tin rng cc bn by gi sc hiu cch lm. Cng thc chung giai on ny s l: PNPNTNPNTP. Cc bn hy tm trn tng 3 ca cc rubik xem c cc no ng v tr (hoc ng mu) hay khng, giai on ny, ch c 1, 4 hoc khng c cc ng v tr, nu c 2 hoc 3 v tr ng th cc rubik ca bn b xp sai. Nu c 4 cc ng v tr cc bn s qua giai on 8, cn c 1 cc ng v tr th bn hy n lm cc gc bn tay phi tng 3 so vi gc nhn ca bn l mt C. V d:

hoc trng hp ny, ti gi l ng v tr.


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trng hp ny, ti gi l ng mu.D trng hp no, cc bn cng cc ng v tr hoc ng mu nh hnh ri lm cng thc trn, lm n khi no thy 4 cc gc tng 3 u ng v tr hoc ng mu (c th 1 cc ng mu, 3 cc cn li ng v tr, hoc 4 cc u ng v tr, khng nht thit c 4 u ng mu hoc ng v tr) th dng li v bt u qua giai on 8.GIAI ON 8:Cc bn n giai on cui ca vic gii cc rubik, giai on ny, cc bn bt u lm ng mu cc cc gc ng v tr ca tng 3. giai on ny chng ta cng c nhiu trng hp, ti ch v mt t hnh minh ha. Cng thc chung giai on ny l: PN2PNPNPTN2TNTNT. Khi thc hin cng thc , cc cc gc ca rubik s bin i nh sau:

Nh cc bn thy, mu ca cc gc s bin i nh hnh, cc bn p dng gii quyt cc cc cn li. Ti s v d 1 s trng hp nh sau:


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trng hp ny, cc bn thy khi s dng cng thc trn 1 ln khng gii quyt c vn , nhng thay v lm 1 ln, cc bn s lm 2 ln, nh vy cc rubik ca cc bn s c gii quyt xong.

trng hp ny, cc bn cn gii quyt cc gc v tr S-P-N trc tin bng cng thc trn, sau n s bin i li thnh trng hp 1, sau giai quyt nh trng hp 1.Ti tin rng cc bn c th nh r c cc trng hp xy ra trong giai on ny v gii quyt vn mt cch nhanh chng. * CHC CC BN THNH CNG *

huong dan choi rubik

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