🇨🇳 NIU Yuanzhe · CHINA

26rank
+53.9Butler · 104 bds
+0.52per board
±4.4swing
+0.25vs par /bd · #36/107
+0.52adjusted /bd
Butler per round: 22.3 11.8 9 13.7 -3.8 0.8 3.3 11.9 -2.6 5 -13.7 -3.8 -0by round

vs par split: bidding +0.75 · play -0.50

Strength of schedule: opponents averaged +0.00/bd (an average draw) → opponent-adjusted +0.52/bd

Card play — on target: opening leads 89.7% #13 of 107 · declarer play 64.5% #93 of 107 · defence 87.8% #35 of 107

Bidding activity — not a pass: 48.3% #14 of 107 (140/290)

Card play by contract type — on target
vs NTvs a suit
Opening leads83.3% (6)91.3% (23)
Declarer play72.7% (11)60.0% (20)
Defence85.7% (14)88.6% (35)

Opening leads by suit led: ♠ 100.0% (7) · ♥ 83.3% (6) · ♦ 85.7% (7) · ♣ 88.9% (9)

vs par by strain: NT +0.50 (32) · a suit +0.14 (72)

vs par by level: part-score -0.37 (43) · game +0.72 (53) · slam +0.50 (8)

By role: declaring +0.94/bd (-1.16 vs par · 55) · defending +0.04/bd (+1.84 vs par · 49)

By vulnerability: vulnerable +0.89/bd (+0.23 vs par · 52) · not vulnerable +0.15/bd (+0.27 vs par · 52)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1B.JiangL.Ceglia – H.Martins FortesOpen8+22.3+2.79+2.88
Round 2B.JiangL.To – A.SetoClosed8+11.8+1.48+0.88
Round 4B.JiangS.Sonyindee – D.NilchayClosed8+9.0+1.12-0.50
Round 5B.JiangC.He – Z.ChengOpen8+13.7+1.71+0.62
Round 7B.JiangJ.Bazyluk – W.BakOpen8-3.8-0.47+1.00
Round 8B.JiangK.Takizawa – Y.SongOpen8+0.8+0.10-1.75
Round 10B.JiangL.Draghi – M.LombardiOpen8+3.3+0.41+0.25
Round 11B.JiangA.Thomas – S.SchuschnyClosed8+11.9+1.49+1.00
Round 13B.JiangS.Clementsson – A.SandinClosed8-2.6-0.33+2.00
Round 14B.JiangT.Van De Paverd – O.NijssenOpen8+5.0+0.62-0.12
Round 15B.JiangD.Brandgaard – A.Rolf-LarsenClosed8-13.7-1.71-4.38
Round 17B.JiangN.Khutorsky – A.ZeitakOpen8-3.8-0.47+0.88
Round 18B.JiangF.Kolesnik – M.XuOpen8-0.0-0.00+0.50

Every board — best Butler first↑ top

vs par = IMPs this pair scored above (+) or below (−) the board’s double-dummy par — what bidding and play (theirs and the opponents’) added or gave away against perfect play.

ButlerRoundOpponentsBdContractLeadResvs par
+12.3Round 1🇧🇷 BRAZIL54♠♥A+1+15
+10.9Round 10🇮🇹 ITALY107♦x♣A-1+12
+10.1Round 2🇭🇰 HONG KONG CHINA95♠♣K-1+10
+10.0Round 8🇯🇵 JAPAN326♦♠A=+7
+9.2Round 11🇦🇷 ARGENTINA226♠♠6=+11
+9.1Round 2🇭🇰 HONG KONG CHINA144♠x♣5+1+11
+7.8Round 7🇵🇱 POLAND235♣x♠K-2+8
+7.8Round 10🇮🇹 ITALY93NT♥6+2+11
+7.3Round 5🇨🇦 CANADA63NT♥6=+0
+6.8Round 13🇸🇪 SWEDEN75♠♣6+1+13
+6.3Round 1🇧🇷 BRAZIL81NT♠2+1+11
+6.1Round 1🇧🇷 BRAZIL13NT♥6+2+1
+5.9Round 11🇦🇷 ARGENTINA233NT♥7+1+0
+5.3Round 18🇺🇸 USA1104♠♣3=-13
+5.2Round 5🇨🇦 CANADA52♠♥K+1+10
+4.7Round 5🇨🇦 CANADA24♥♠K-1-1
+3.8Round 1🇧🇷 BRAZIL22♠♦Q+1+0
+3.7Round 8🇯🇵 JAPAN274♠♥6-1+10
+3.6Round 4🇹🇭 THAILAND272♠♦A-1+9
+3.6Round 14🇳🇱 NETHERLANDS93♦♠5-2+0
+3.0Round 14🇳🇱 NETHERLANDS114♠♣3=+3
+2.9Round 18🇺🇸 USA1135♥♦2=+0
+2.6Round 4🇹🇭 THAILAND326NT♠2=-11
+2.4Round 1🇧🇷 BRAZIL61NT♥3+1+1
+2.4Round 11🇦🇷 ARGENTINA193NT♠3+1+1
+2.4Round 18🇺🇸 USA194♥♣4+1+11
+2.3Round 7🇵🇱 POLAND183NT♥Q-1+4
+2.3Round 14🇳🇱 NETHERLANDS104♣♠A+1+10
+2.3Round 15🇩🇰 DENMARK173NT♥2=+0
+2.3Round 18🇺🇸 USA1163NT♥2-1+5
+2.2Round 14🇳🇱 NETHERLANDS152♠♥5+1+0
+2.2Round 17🇮🇱 ISRAEL14♠♥Q+2+11
+2.0Round 4🇹🇭 THAILAND252♠♥T+3-6
+1.9Round 7🇵🇱 POLAND175♦♥A-2+5
+1.9Round 8🇯🇵 JAPAN314♠♦A=+0
+1.8Round 4🇹🇭 THAILAND293NT♥9=-2
+1.8Round 10🇮🇹 ITALY142♥♦K=-1
+1.8Round 15🇩🇰 DENMARK243NT♣2+1+0
+1.7Round 4🇹🇭 THAILAND303♠♠J=+1
+1.7Round 11🇦🇷 ARGENTINA172NT♣Q+1+0
+1.7Round 13🇸🇪 SWEDEN13NT♦8=+11
+1.7Round 17🇮🇱 ISRAEL64♥♣T=+0
+1.6Round 2🇭🇰 HONG KONG CHINA161NT♥K+1+0
+1.2Round 8🇯🇵 JAPAN303NT♣6+1+1
+1.0Round 13🇸🇪 SWEDEN83NT♠2+3+1
+0.9Round 4🇹🇭 THAILAND313♠♣2-1+4
+0.9Round 17🇮🇱 ISRAEL42♠♥4+1+1
+0.8Round 7🇵🇱 POLAND223NT♣J+1+1
+0.8Round 14🇳🇱 NETHERLANDS144♠♦K+1+0
+0.8Round 17🇮🇱 ISRAEL21NT♥A+2-1
+0.7Round 13🇸🇪 SWEDEN41NT♠9=+1
+0.4Round 1🇧🇷 BRAZIL43♣♠A-1+1
+0.4Round 8🇯🇵 JAPAN294♠♦3+1+0
+0.3Round 7🇵🇱 POLAND202♠♣Q+1+0
+0.3Round 11🇦🇷 ARGENTINA201NT♥6=+1
-0.1Round 4🇹🇭 THAILAND262NT♥8+2-10
-0.1Round 5🇨🇦 CANADA13♠♥2-1-4
-0.1Round 5🇨🇦 CANADA34♠♦3=+0
-0.2Round 13🇸🇪 SWEDEN22♥♠A-1+2
-0.2Round 14🇳🇱 NETHERLANDS134♠♦2=-1
-0.2Round 15🇩🇰 DENMARK214♥♦3=+0
-0.3Round 1🇧🇷 BRAZIL74♠♦A=+0
-0.3Round 7🇵🇱 POLAND242♦♣A+1+0
-0.3Round 17🇮🇱 ISRAEL82NT♣T=+0
-0.5Round 2🇭🇰 HONG KONG CHINA113♦♣Q+1+7
-0.5Round 15🇩🇰 DENMARK194♠♦8=-1
-0.6Round 5🇨🇦 CANADA74♠♦2=+0
-0.6Round 15🇩🇰 DENMARK233♦♠A=-10
-0.7Round 5🇨🇦 CANADA43♦♣A+1+0
-0.7Round 11🇦🇷 ARGENTINA212♠♠K=+0
-1.0Round 14🇳🇱 NETHERLANDS123NT♥3+1-1
-1.2Round 10🇮🇹 ITALY113NT♦5+2+0
-1.3Round 15🇩🇰 DENMARK182NT♠Q-1-3
-1.3Round 18🇺🇸 USA1114♠♦4+1+0
-1.4Round 2🇭🇰 HONG KONG CHINA124♥♠A-1-5
-1.4Round 2🇭🇰 HONG KONG CHINA133♥♣A-1-1
-1.4Round 17🇮🇱 ISRAEL53NT♣K+1+1
-1.6Round 13🇸🇪 SWEDEN34♦♣Q-2-7
-1.7Round 10🇮🇹 ITALY165♣♦A-2+5
-2.0Round 5🇨🇦 CANADA81NT♣2-2+0
-2.2Round 10🇮🇹 ITALY151NT♠K+1-1
-2.4Round 18🇺🇸 USA1143♣♠5-1+2
-2.5Round 8🇯🇵 JAPAN262♥♦A=-6
-2.6Round 2🇭🇰 HONG KONG CHINA154♠♣A-1-10
-3.0Round 18🇺🇸 USA1153NT♦K+2+0
-3.1Round 2🇭🇰 HONG KONG CHINA102♦♣K=-5
-3.1Round 15🇩🇰 DENMARK204♠♦Q-2-9
-3.3Round 11🇦🇷 ARGENTINA242♥♠A+2+6
-3.5Round 4🇹🇭 THAILAND286♣♦J=+11
-3.6Round 11🇦🇷 ARGENTINA183♥♣A-1-11
-3.6Round 17🇮🇱 ISRAEL33NT♦5-3-6
-4.1Round 17🇮🇱 ISRAEL73♠♣2+1+1
-4.2Round 10🇮🇹 ITALY125♠♣8-2-7
-4.4Round 13🇸🇪 SWEDEN63♦♣Q=+0
-4.9Round 8🇯🇵 JAPAN286♠♥5-1-14
-5.7Round 14🇳🇱 NETHERLANDS163♠♦T-1-12
-6.2Round 18🇺🇸 USA1124♠♦J=-1
-6.6Round 13🇸🇪 SWEDEN55♣x♦K-2-5
-7.9Round 10🇮🇹 ITALY134♥x♠A-2-17
-8.1Round 7🇵🇱 POLAND216♣♠6=+0
-8.5Round 7🇵🇱 POLAND194♥♣8-1-10
-8.7Round 1🇧🇷 BRAZIL32♠x♣K-1-6
-9.0Round 8🇯🇵 JAPAN255♥♦K-1-12
-12.1Round 15🇩🇰 DENMARK226♦♠5=-12