i'm sosu, the prime number. i'm going to show you the rules. a puzzle where you fill the grids with numbers one through nine and guess the sum. take this three, for instance. if you place one and two like this you get one plus two is three. you get the four next to it the same way. another thing. you can't use the same number in one edition. all in all, it's complex. no wonder arimatsu, the world champ, decides to work on it later. >> okay. finished. >> how was it? >> it says 225 points out of 300. it was difficult. there were two that i couldn't solve. they're called digital inequality. the instructions said there are multiple solutions to the problems. although i started working on it, the thing about multiple solutions got in my way and i couldn't complete it. >> multiple solutions aren't good? >> no, not good. not beautiful, i must say. i get a stronger sense of accomplishment if there's just one solution. >> the answer sheet is teeming with numbers, but there's only one way for the numbers to fill the grids. so they can tell if the answer

trooo wile sosu ooil depyi ther what ishe. eptoind ernd atkills. josh con.d ell gurillos grouponccud u ofll gup terrizintens ofhousuds f peoe. rrinnsfus eo . obaaid t obd unid stat t suprtedility eratn. butttemsnio tateup conedit ut at tem ison unscessul. and w u.s fors wilns bess. on d e.sor grndoilen r prode suprt. thrps wlrootup.ngag in th bale wnssheyagn bany defd thselv. reacon isixed ef it thlv is a g oodacsed ts aove gd veanda govnmen daoven wehink thathis wl get hienk anats fce wet ti ugandins h ean to f tgdi h ake se. >>nhat inetest i shis >>tnte is tang? we have bn t vctim ta? f e thve b t vim thar. we don.onde iugni oron suppdt ac ivitynir >>ll o ppacty thiomis u.s oforc aretillhi iolvemid in e.s conflt rcnrell lib. ivein th eon whifle htseaid wereib th nohihfficllydte warhere noicy mollar nninergreas tha >>hat illhe allintrgtha cating i ol parcipaio cang ugan o warr n.arpa ride oanma sard not war. thee o sroop are r. the to eop avisere govementand litaes th aheo trng to tak a dsen eventd ta th arorsoak d r si anc ar oor lra. rsi ncthe r

se it aig cntrynd sosu ofin a shffer tit cry eltorasof in w hashir whenerou g the, anyou aelra gon g sn, rehair t ereen g hefferant iuues a th yougoth scus inn f t thee er ies wll, houfocuon tse sa in fhe suesn a w, statcu. tsa t tseek, es a bausehere at be vir ally tk, b consersatren beirly out eife andonatarrge a faly isst ewe'v beetalkegnd rr ab athat thi wfak. ss ther'vsee alko ab pto-li, prohi w rria , pr er a faly pli iprnew hampire wel ia pr iet wh thfa iw mpe elrece ly ai wthisthumme ttalk bouthose sues ce abut at'sn th onteis ofme th t lk facthatutse thecony is es jo t 'sthte f e nuther o . ct tbut ere'ath ont of i popleout nu th oe, lik i t e' of sd, f w pm thle fe th issik d ma siage fs wth extrelymporssnt. ey wt tknow heremage trheyor. ca widat t sownd.re oneasealleen lkin abou ca itat sso i. wnted netoll l then in ote ou ow wre i sttd i wednd aty lhee w it histy . >>he rorti s j tst n,>> hw aryou ringti ooney >> jwe a ve hrate l. ar u weg h oveey a ve strg aelistteof h a smveltr dors st tat bn ve sm ithf d ands 'm atef for tem i b whavethey areoing ohfnd nate ef toorur a