The extra stone in the ELf analysis explains why the game is so lopsided in the Katago analysis, based on the diagram published here.
Can we confirm the actual game has the extra stone?
Here is the game record, according to GoGoD. The White stone is move 22.
(;SZ[19]FF[3] PWLiang Weitang WR7d? PBFeng Yun BR7d? EV1994 Chinese Promotion Tournament? DT1994-06-11 PCBeijing? TM2h 40? KM2.75 RUChinese REB+R? USGoGoD95? ;Bpd?;Wdp?;Bpq?;Wdd?;Bpo?;Wqj?;Bfq?;Wip?;Bcn?;Wfp?;Bcq?;Wcp? ;Bdq?;Wep?;Beq;Wgq?;Bcj;Wgr?;Bbp?;Wbo?;Bbq?;Wch?;Bco?;Wcl? ;Bql?;Wqf?;Bnd?;Wlc?;Bqh?;Wrh?;Bfc?;Wdc?;Bid?;Wfe?;Bkd?;Wld? ;Ble?;Wkc?;Bjc?;Wke?;Bjd?;Wme;Blf?;Wmd?;Bpf?;Wqg?;Bpg?;Wnb? ;Bph?;Wqi;Bqe?;Wpb?;Bqb?;Wre?;Brd?;Wrf?;Bpc;Wob?;Bkf?;Wmf? ;Bbn?;Wif?;Bjf;Wbl?;Bef?;Wcf?;Bdg?;Wcg?;Bee?;Wgc?;Bfd?;Wgd? ;Bgb?;Wgf?;Beb?;Wgh?;Bfh?;Wfg?;Beh?;Wed?;Bgi?;Whi?;Bgj?;Wej? ;Bhj?;Wfi?;Bek?;Wei?;Bdk?;Wdh?;Bkq?;Wdm?;Ben?;Wem?;Bfm?;Wfl? ;Bgm?;Wfk?;Bel?;Whk;Bbi?;Wbh?;Bbk?;Wak?;Baj?;Wal?;Biq?;Wjp? ;Bjq?;Wkp?;Blp?;Wlq?;Blr?;Wmq?;Bmr;Who?;Blo?;Wij?;Bdn?;Wdj ;Bck?;Wci?;Bhq?;Whp?;Bhl?;Wkn?;Bln?;Wgk?;Bkm?;Wjm?;Bjl?;Wkl? ;Blm?;Wil?;Bim?;Wjk;Bjn?;Whb?;Bjl?;Whc?;Bhe?;Wie?;Bhf?;Wig? ;Bge?;Whd?;Bff?;Wjb?;Bgg?;Weg?;Bhh?;Wje?;Bfh?;Weh?;Bii?;Wjm? ;Bhg;Win?;Bjl?;Woe?;Bik?;Wpe?;Bjj?;Wpl?;Bfj? )