🇨🇳 CHENG Zhiyu · CHINA

55rank
+24.3Butler · 182 bds
+0.13per board
±4.9swing
+0.61vs par /bd · #28/115
-0.22adjusted /bd
Butler per round: -25.1 8.5 5.5 -17.8 13.5 17.9 19 -37.3 2.6 -24.7 38 -31.5 55.7by round

vs par split: bidding -0.12 · play +0.74

Strength of schedule: opponents averaged -0.35/bd (an easy draw) → opponent-adjusted -0.22/bd

Card play — on target: opening leads 76.6% #67 of 115 · declarer play 79.2% #29 of 115 · defence 89.9% #9 of 115

Card play by contract type — on target
vs NTvs a suit
Opening leads80.0% (10)75.7% (37)
Declarer play80.0% (10)79.1% (43)
Defence81.0% (21)92.6% (68)

Opening leads by suit led: ♠ 80.0% (10) · ♥ 81.8% (11) · ♦ 76.9% (13) · ♣ 69.2% (13)

vs par by strain: NT +0.86 (44) · a suit +0.54 (136)

vs par by level: part-score +1.54 (69) · game -0.42 (99) · slam +3.92 (12)

By role: declaring -0.12/bd (-1.83 vs par · 91) · defending +0.39/bd (+3.06 vs par · 91)

By vulnerability: vulnerable +0.13/bd (+1.09 vs par · 91) · not vulnerable +0.14/bd (+0.13 vs par · 91)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1X.WangT.Pavlov – V.YotovClosed14-25.1-1.79-1.43
Round 3X.WangT.Sammalisto – A.AaltoOpen14+8.5+0.61+3.00
Round 4X.WangS.Helgeby – M.LundClosed14+5.5+0.39+0.14
Round 5X.WangL.Sanderson – D.WinterClosed14-17.8-1.27-1.07
Round 7X.WangT.Yamada – Y.NishimuraOpen14+13.5+0.96+2.43
Round 9X.WangGOKUL S – R.Vadumangudi BalasundaramClosed14+17.9+1.28+0.79
Round 10X.WangT.Liu – C.ChiuClosed14+19.0+1.36+3.07
Round 11X.WangB.Perez – E.VasquezOpen14-37.3-2.66-2.29
Round 13X.WangV.Otto – M.LitterstClosed14+2.6+0.19+0.71
Round 14X.WangG.Giubilo – G.GiubiloOpen14-24.7-1.76-1.50
Round 16X.WangK.Sianglio – P.KuysuwanOpen14+38.0+2.71+2.93
Round 18X.WangJ.Freeman – B.ZhuOpen14-31.5-2.25-4.14
Round 19X.WangJ.Keabitsa – M.WaditselaOpen14+55.7+3.98+5.29

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
+13.1Round 16🇹🇭 THAILAND56NT♣6-1+17
+12.5Round 19BOTSWANA103NT♠9+1+13
+11.7Round 9🇮🇳 INDIA83♥x♣8=+12
+11.1Round 10🇹🇼 CHINESE TAIPEI126♠♦9-1+13
+11.1Round 16🇹🇭 THAILAND94♠♣Q=+0
+10.7Round 16🇹🇭 THAILAND15♦x♠K-4+9
+9.2Round 4🇳🇴 NORWAY104♦♠9-2+13
+9.0Round 4🇳🇴 NORWAY54♥♠2-2+11
+9.0Round 13🇩🇪 GERMANY115♥x♦4=+8
+8.1Round 3🇫🇮 FINLAND44♠♦3-1+13
+7.4Round 19BOTSWANA84♠♠2=+11
+7.4Round 19BOTSWANA112♣♠A=+13
+7.0Round 16🇹🇭 THAILAND74♥♦4=+0
+6.3Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND24♥♠J-2+0
+5.8Round 7🇯🇵 JAPAN62♦♠10=+6
+5.8Round 9🇮🇳 INDIA74♠♦9+1+1
+5.7Round 1🇧🇬 BULGARIA144♠x♣J-2-3
+5.7Round 19BOTSWANA125♣♦2+1+15
+5.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND53♠♦K-1+11
+5.6Round 19BOTSWANA33NT♥A=+7
+5.5Round 3🇫🇮 FINLAND133♠♥6+1+10
+5.0Round 14🇮🇹 ITALY94♠♥K-1+10
+4.8Round 3🇫🇮 FINLAND74♠x♥6=+7
+4.8Round 10🇹🇼 CHINESE TAIPEI132NT♦J-1+12
+4.4Round 19BOTSWANA14♠♠6+2-11
+4.2Round 7🇯🇵 JAPAN124♥♥6-1+5
+4.1Round 1🇧🇬 BULGARIA104♥♠A+1+1
+4.1Round 14🇮🇹 ITALY102♥♥3-2+2
+4.1Round 18🇨🇦 CANADA12NT♣K-2+5
+4.0Round 3🇫🇮 FINLAND141NTx♣10-1+5
+4.0Round 10🇹🇼 CHINESE TAIPEI111NT♣2-1+4
+4.0Round 16🇹🇭 THAILAND84♠♥K=+0
+3.9Round 13🇩🇪 GERMANY12NT♠3-1+10
+3.9Round 14🇮🇹 ITALY55♦♣5-1+6
+3.8Round 19BOTSWANA142♥♠J-2+7
+3.7Round 19BOTSWANA24♠♣K-2+5
+3.7Round 19BOTSWANA44♠♠3+1+1
+3.6Round 18🇨🇦 CANADA33NT♥3-3+2
+3.6Round 18🇨🇦 CANADA75♦♦7+1+13
+3.5Round 9🇮🇳 INDIA23NT♥3=+10
+3.4Round 9🇮🇳 INDIA14♥♣K+1+0
+3.3Round 19BOTSWANA52♠♥2-1+4
+3.2Round 1🇧🇬 BULGARIA14♥♣3-2+5
+3.1Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND71NT♣2+1+6
+3.1Round 14🇮🇹 ITALY23NT♥2=+0
+3.0Round 4🇳🇴 NORWAY15♣♦3=+0
+3.0Round 10🇹🇼 CHINESE TAIPEI33♠♦A-1+4
+2.9Round 4🇳🇴 NORWAY32♠♣2+2+6
+2.7Round 7🇯🇵 JAPAN52NT♥J-2+2
+2.7Round 9🇮🇳 INDIA133♣♦K=-1
+2.7Round 19BOTSWANA133NT♥7+1+13
+2.6Round 11🇨🇱 CHILE32♣♦6=+5
+2.6Round 13🇩🇪 GERMANY123♥♠4-2+3
+2.5Round 7🇯🇵 JAPAN92♦♠6+1+0
+2.5Round 13🇩🇪 GERMANY62♣♦10+2+1
+2.4Round 9🇮🇳 INDIA145♥♣6+1+2
+2.3Round 11🇨🇱 CHILE53NT♦7+4+10
+2.3Round 11🇨🇱 CHILE65♦♥K-1-3
+2.3Round 16🇹🇭 THAILAND44♠♣6=+0
+2.2Round 19BOTSWANA63♥♦2-1+6
+2.1Round 18🇨🇦 CANADA114♥♠K=+0
+2.0Round 3🇫🇮 FINLAND94♥♣5=+0
+2.0Round 16🇹🇭 THAILAND133NT♣4=+0
+1.9Round 7🇯🇵 JAPAN73♥♦Q-1+6
+1.9Round 7🇯🇵 JAPAN132♥♣10+2+1
+1.9Round 13🇩🇪 GERMANY51NT♠J+3-6
+1.8Round 10🇹🇼 CHINESE TAIPEI95♦♥A-2+6
+1.7Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♠♣A-1+2
+1.7Round 9🇮🇳 INDIA54♥♣K-2-1
+1.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND14♠♥Q-1+4
+1.6Round 7🇯🇵 JAPAN22♥♦J=+1
+1.5Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND133NT♠6-1+12
+1.5Round 9🇮🇳 INDIA61NT♣3+1+0
+1.5Round 10🇹🇼 CHINESE TAIPEI73♣♥A=+6
+1.5Round 11🇨🇱 CHILE23NT♠6+1+0
+1.4Round 10🇹🇼 CHINESE TAIPEI6Pass+3
+1.4Round 13🇩🇪 GERMANY133NT♦4+1-1
+1.3Round 1🇧🇬 BULGARIA44♠♦2=-1
+1.3Round 7🇯🇵 JAPAN13♠♥K-1+6
+1.1Round 3🇫🇮 FINLAND24♥♠K=+1
+1.1Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND31NT♥4+1-7
+1.1Round 9🇮🇳 INDIA34♥♠6+1+1
+1.1Round 13🇩🇪 GERMANY33NT♥J+1+0
+1.1Round 16🇹🇭 THAILAND23♦♠3-1+10
+1.0Round 3🇫🇮 FINLAND103NT♥2+3+3
+1.0Round 4🇳🇴 NORWAY46♣♠2+1+11
+1.0Round 10🇹🇼 CHINESE TAIPEI15♦x♥A-2-5
+0.9Round 4🇳🇴 NORWAY124♥♦J+1+0
+0.9Round 7🇯🇵 JAPAN43NT♦2+2+0
+0.9Round 18🇨🇦 CANADA53NT♠8=+1
+0.9Round 18🇨🇦 CANADA103NT♠4-1-1
+0.5Round 1🇧🇬 BULGARIA84♠♣10+1+0
+0.5Round 16🇹🇭 THAILAND113♠♣7-3+0
+0.4Round 3🇫🇮 FINLAND124♠♣K-1+5
+0.4Round 7🇯🇵 JAPAN33♣♥A-1+7
+0.4Round 7🇯🇵 JAPAN104♠♣5-1-6
+0.4Round 9🇮🇳 INDIA101NT♥3+1+1
+0.4Round 10🇹🇼 CHINESE TAIPEI41NT♣Q=-2
+0.3Round 11🇨🇱 CHILE16♦♠J=-2
+0.3Round 14🇮🇹 ITALY72♥♠3=+10
+0.3Round 19BOTSWANA95♣♦K+1-3
+0.2Round 4🇳🇴 NORWAY22♦♥Q+1+0
+0.1Round 3🇫🇮 FINLAND54♥♦2-1+6
+0.1Round 4🇳🇴 NORWAY71NT♣4-1+6
-0.0Round 14🇮🇹 ITALY142♣♣3-1+4
-0.1Round 1🇧🇬 BULGARIA75♣♠7+1-1
-0.1Round 10🇹🇼 CHINESE TAIPEI52♠♥6-1+2
-0.1Round 13🇩🇪 GERMANY142♥♦4+2+6
-0.2Round 4🇳🇴 NORWAY95♠♥4+2-12
-0.2Round 16🇹🇭 THAILAND125♦♣K-1+2
-0.3Round 3🇫🇮 FINLAND113♠♦2=+0
-0.6Round 1🇧🇬 BULGARIA22♦♥6+2+7
-0.6Round 16🇹🇭 THAILAND6Pass-3
-0.7Round 11🇨🇱 CHILE95♥♠Q=+0
-0.8Round 13🇩🇪 GERMANY23♠♦K-2+0
-0.9Round 11🇨🇱 CHILE42♥♣K+1+0
-1.0Round 1🇧🇬 BULGARIA53NT♦6=+1
-1.0Round 1🇧🇬 BULGARIA114♠♦2=+1
-1.0Round 14🇮🇹 ITALY113♣♦5-1-2
-1.2Round 10🇹🇼 CHINESE TAIPEI21♣♦A-2+9
-1.5Round 10🇹🇼 CHINESE TAIPEI141♠x♣10-3-2
-1.6Round 4🇳🇴 NORWAY143♣♥J+1-7
-1.7Round 4🇳🇴 NORWAY114♥♦2+1-1
-1.7Round 13🇩🇪 GERMANY42♦♥J+1+0
-1.8Round 18🇨🇦 CANADA24♠♥5-1-5
-1.9Round 7🇯🇵 JAPAN113NT♠4=+0
-2.0Round 3🇫🇮 FINLAND34NT♣5+2-14
-2.0Round 18🇨🇦 CANADA124♠♥4-3-7
-2.2Round 3🇫🇮 FINLAND14♠♣10=+1
-2.2Round 18🇨🇦 CANADA86♥♦K=-11
-2.5Round 9🇮🇳 INDIA123♥♦A+1-8
-2.5Round 16🇹🇭 THAILAND103NT♥Q+2+17
-2.6Round 7🇯🇵 JAPAN143NT♥7-2-5
-2.6Round 10🇹🇼 CHINESE TAIPEI84♥♦8+1-1
-2.7Round 13🇩🇪 GERMANY72♠♥7=+0
-2.7Round 16🇹🇭 THAILAND144♠♦2=+0
-2.9Round 13🇩🇪 GERMANY104♥♠10+1-1
-3.0Round 4🇳🇴 NORWAY63NT♣10-1-6
-3.1Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND63♦♣A+1-1
-3.1Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113NT♠6-1-10
-3.1Round 14🇮🇹 ITALY44♠♣K+1-4
-3.2Round 3🇫🇮 FINLAND83♥♣2-1-8
-3.2Round 11🇨🇱 CHILE106♠♥5+1-1
-3.2Round 18🇨🇦 CANADA63NT♠4-1-6
-3.2Round 18🇨🇦 CANADA93♣♠8-1-5
-3.8Round 14🇮🇹 ITALY124♠x♣5-2-12
-4.0Round 1🇧🇬 BULGARIA132♠♦K+1+10
-4.0Round 9🇮🇳 INDIA115♣♠K-1-5
-4.0Round 11🇨🇱 CHILE134♠♣3=+0
-4.1Round 9🇮🇳 INDIA42♠♥J-2-3
-4.1Round 14🇮🇹 ITALY12♠♣2+2-6
-4.3Round 4🇳🇴 NORWAY82♥♣5+2-7
-4.6Round 10🇹🇼 CHINESE TAIPEI101♦x♦7=-6
-4.6Round 11🇨🇱 CHILE116♦♠A=+2
-4.8Round 13🇩🇪 GERMANY84♥♥4+1+0
-5.4Round 1🇧🇬 BULGARIA123NT♠K-1-6
-5.4Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND43♠♥A+1-1
-5.5Round 14🇮🇹 ITALY37♣♠3=+2
-5.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND144♥x♠K-2-10
-5.6Round 7🇯🇵 JAPAN86♠♦K=+11
-5.7Round 9🇮🇳 INDIA96♣♠10=+2
-5.8Round 14🇮🇹 ITALY131♥♠5+4-10
-6.0Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND104♠♥3-2-8
-6.2Round 1🇧🇬 BULGARIA95♦♦6-1-10
-6.8Round 13🇩🇪 GERMANY92NT♦10-6-10
-7.0Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND91NTx♥3+1-7
-7.0Round 19BOTSWANA74♠x♦A-3-7
-7.3Round 1🇧🇬 BULGARIA34♠♠6-1-11
-7.3Round 14🇮🇹 ITALY64♥♣2+2-13
-7.8Round 11🇨🇱 CHILE143NT♣J+1-8
-7.8Round 16🇹🇭 THAILAND33♥♥2-2-11
-8.2Round 11🇨🇱 CHILE123♠x♦2=-12
-8.3Round 11🇨🇱 CHILE86♠♦K=-10
-8.5Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND124♥♦10-1-6
-8.6Round 11🇨🇱 CHILE73NTx♦9=-13
-9.1Round 18🇨🇦 CANADA143♣x♥5=-11
-9.9Round 18🇨🇦 CANADA133NT♠2+3-17
-10.0Round 4🇳🇴 NORWAY135♥♦2-1-12
-10.5Round 14🇮🇹 ITALY85♦x♠A-4-8
-10.8Round 3🇫🇮 FINLAND66♦♥A+1+13
-14.3Round 1🇧🇬 BULGARIA65♦x♦A-6-13
-15.3Round 18🇨🇦 CANADA44♠xx♥A-3-16