🇹🇼 CHANG Chiachi · CHINESE TAIPEI

57rank
-78.2Butler · 112 bds
-0.70per board
±5.0swing
-0.10vs par /bd · #36/68
-0.70adjusted /bd
Butler per round: -24 -20.1 31.2 8.2 -12.2 -51 -17.6 7.3by round

vs par split: bidding +0.32 · play -0.42

Strength of schedule: opponents averaged +0.00/bd (an average draw) → opponent-adjusted -0.70/bd

Card play — on target: opening leads 91.2% #6 of 68 · declarer play 54.2% #65 of 68 · defence 75.9% #63 of 68

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (6)96.4% (28)
Declarer play60.0% (5)52.6% (19)
Defence76.9% (13)75.6% (45)

Opening leads by suit led: ♠ 100.0% (6) · ♥ 85.7% (7) · ♦ 90.9% (11) · ♣ 90.0% (10)

vs par by strain: NT -1.54 (28) · a suit +0.38 (84)

vs par by level: part-score -0.18 (56) · game -0.29 (48) · slam +1.62 (8)

By role: declaring -0.70/bd (-2.91 vs par · 54) · defending -0.69/bd (+2.52 vs par · 58)

By vulnerability: vulnerable -1.36/bd (-0.14 vs par · 56) · not vulnerable -0.04/bd (-0.05 vs par · 56)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.ChenS.Sjodal – T.IndreboOpen14-24.0-1.71-2.14
Round 2Y.ChenM.Xia – X.DengOpen14-20.1-1.44-0.57
Round 5Y.ChenZ.Beko – L.ErsekClosed14+31.2+2.23+2.93
Round 6Y.ChenC.De Lutio – S.CapobiancoOpen14+8.2+0.59-0.93
Round 8Y.ChenL.Li – J.OngClosed14-12.2-0.87+3.00
Round 9Y.ChenE.Ningtias – F.SibueaClosed14-51.0-3.64-3.79
Round 11Y.ChenE.Visser – M.Van OmmenOpen14-17.6-1.26-0.43
Round 12Y.ChenF.Nacrur – S.GerstmannClosed14+7.3+0.52+1.14

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
+9.8Round 6🇮🇹 ITALY245♠♣5+2+14
+8.1Round 6🇮🇹 ITALY226♠♣J=-11
+8.0Round 5🇭🇺 HUNGARY56♦♣Q-1+12
+8.0Round 5🇭🇺 HUNGARY105♥♠J=+15
+7.8Round 6🇮🇹 ITALY216♠♦J-1+13
+7.7Round 12🇨🇱 CHILE223NT♠3=+0
+7.5Round 11🇳🇱 NETHERLANDS151♠♥6+4+15
+6.9Round 5🇭🇺 HUNGARY72♦♠5+1+6
+6.6Round 6🇮🇹 ITALY204♠x♣4=+4
+6.3Round 1🇳🇴 NORWAY264♥♠A=+9
+5.7Round 5🇭🇺 HUNGARY32NT♦K-3+2
+4.8Round 8🇸🇬 SINGAPORE245♣♠2-1+11
+4.8Round 12🇨🇱 CHILE232♣♣6-1+0
+4.1Round 12🇨🇱 CHILE174♥♣7=+0
+3.8Round 1🇳🇴 NORWAY164♥♣2+1+4
+3.8Round 1🇳🇴 NORWAY193♠♦9+1+6
+3.7Round 5🇭🇺 HUNGARY13♣♠3=+8
+3.7Round 12🇨🇱 CHILE243NT♥4=+0
+3.6Round 5🇭🇺 HUNGARY131♠♦7+1+11
+3.6Round 8🇸🇬 SINGAPORE202♠♣Q=+6
+3.5Round 9🇮🇩 INDONESIA222NT♦2-2+8
+3.2Round 9🇮🇩 INDONESIA243♥♣5=+1
+2.9Round 1🇳🇴 NORWAY175♦♥9=-11
+2.7Round 2🇨🇳 CHINA101NT♦8-2+3
+2.7Round 5🇭🇺 HUNGARY145♦♠J=-1
+2.7Round 12🇨🇱 CHILE161NT♠5=-8
+2.6Round 2🇨🇳 CHINA52♥♠J-1+5
+2.5Round 8🇸🇬 SINGAPORE254♠♥6-1+5
+2.5Round 12🇨🇱 CHILE213♣♣3-1+5
+2.4Round 11🇳🇱 NETHERLANDS162♥♣K-1+5
+2.4Round 12🇨🇱 CHILE254♠♦4+1+13
+2.2Round 1🇳🇴 NORWAY283NT♠7+3-11
+2.2Round 8🇸🇬 SINGAPORE151NT♣9-2+2
+1.9Round 6🇮🇹 ITALY162♠♦9+1+1
+1.8Round 1🇳🇴 NORWAY154♠♥Q+2+1
+1.6Round 6🇮🇹 ITALY264♥♠A=-1
+1.5Round 2🇨🇳 CHINA42♥♣A+1+0
+1.5Round 5🇭🇺 HUNGARY46♦♥Q-3+4
+1.4Round 2🇨🇳 CHINA91NT♣5-1+2
+1.4Round 9🇮🇩 INDONESIA264♥♣K=+0
+1.4Round 9🇮🇩 INDONESIA274♥♦J+2+1
+1.2Round 12🇨🇱 CHILE281NT♣K+3+7
+1.1Round 1🇳🇴 NORWAY273NT♠7+2+0
+1.1Round 8🇸🇬 SINGAPORE162♠♣5+2+6
+1.0Round 6🇮🇹 ITALY272NT♥4=-1
+0.8Round 11🇳🇱 NETHERLANDS251NT♠A=-1
+0.7Round 8🇸🇬 SINGAPORE194♠♣A=-1
+0.4Round 8🇸🇬 SINGAPORE225♠♦A=+0
+0.4Round 11🇳🇱 NETHERLANDS271NT♠9+2+1
+0.3Round 5🇭🇺 HUNGARY91♠♥K+3-8
+0.3Round 6🇮🇹 ITALY191NT♦4+1+0
+0.1Round 6🇮🇹 ITALY255♦♠3-1+5
+0.1Round 11🇳🇱 NETHERLANDS283NT♥2+1+0
+0.0Round 2🇨🇳 CHINA132♥♠4=+1
-0.0Round 5🇭🇺 HUNGARY25♣♠K=+0
+0.0Round 9🇮🇩 INDONESIA212♥♠Q=+0
-0.3Round 6🇮🇹 ITALY182♥♦Q+2-1
-0.5Round 5🇭🇺 HUNGARY124♠♣2+2-1
-0.5Round 11🇳🇱 NETHERLANDS181NT♠3=-1
-0.5Round 11🇳🇱 NETHERLANDS191NT♠6=-5
-0.5Round 12🇨🇱 CHILE182♠♦Q+1+0
-0.9Round 11🇳🇱 NETHERLANDS212♠♣7+1+0
-1.1Round 12🇨🇱 CHILE192♥♦Q+2+10
-1.4Round 6🇮🇹 ITALY154♥♠4=+1
-1.4Round 9🇮🇩 INDONESIA234♣♠4=+9
-1.5Round 8🇸🇬 SINGAPORE216♠♣2+1+13
-1.5Round 11🇳🇱 NETHERLANDS201NT♥2=-11
-1.5Round 12🇨🇱 CHILE273NT♥6=+0
-1.6Round 2🇨🇳 CHINA63♦♣7+1-1
-1.6Round 11🇳🇱 NETHERLANDS244♠♥4=+1
-1.9Round 1🇳🇴 NORWAY212♠♥J+1-1
-1.9Round 8🇸🇬 SINGAPORE173♣♥4-1-4
-2.1Round 5🇭🇺 HUNGARY85♣♦6+1-1
-2.5Round 8🇸🇬 SINGAPORE272♠♥Q-1-4
-2.6Round 2🇨🇳 CHINA14♥♦6+2+10
-2.6Round 2🇨🇳 CHINA143♠♣5+2-6
-2.7Round 12🇨🇱 CHILE204♥♠9=+0
-2.8Round 11🇳🇱 NETHERLANDS222♠♣3+1-1
-2.9Round 2🇨🇳 CHINA33♥♦5+1-6
-2.9Round 2🇨🇳 CHINA82♦♠8-4+5
-3.0Round 2🇨🇳 CHINA22NT♦Q=+0
-3.0Round 2🇨🇳 CHINA112♥♦A+1-7
-3.1Round 9🇮🇩 INDONESIA163♥♠K-1-5
-3.2Round 5🇭🇺 HUNGARY64♠♦3+1+0
-3.4Round 5🇭🇺 HUNGARY111NT♣2+1-6
-3.5Round 8🇸🇬 SINGAPORE184♠♣5+1+13
-3.5Round 8🇸🇬 SINGAPORE233♠♥A=+0
-3.9Round 9🇮🇩 INDONESIA284♥♣4=+0
-4.0Round 1🇳🇴 NORWAY242♣♠6-3-7
-4.2Round 2🇨🇳 CHINA74♠♦J+2-10
-4.7Round 1🇳🇴 NORWAY184♥♣10-1-8
-4.7Round 9🇮🇩 INDONESIA174♠♦6-2-5
-4.9Round 1🇳🇴 NORWAY201NT♥2+2-6
-4.9Round 1🇳🇴 NORWAY224♠♦J-1-6
-5.5Round 2🇨🇳 CHINA123♥♣3=-4
-5.5Round 11🇳🇱 NETHERLANDS233NT♥7=+1
-5.9Round 9🇮🇩 INDONESIA203♣♠6+1-10
-6.0Round 6🇮🇹 ITALY173♥♣Q=-10
-6.5Round 6🇮🇹 ITALY233NT♣4=-10
-6.5Round 11🇳🇱 NETHERLANDS173NT♥6=+0
-6.7Round 9🇮🇩 INDONESIA253NT♥7+4-14
-7.0Round 9🇮🇩 INDONESIA184♠♥Q-3-10
-7.1Round 8🇸🇬 SINGAPORE263NT♣3-4+5
-7.5Round 8🇸🇬 SINGAPORE284♥♣6-1-10
-7.5Round 12🇨🇱 CHILE154♥♣9=+0
-8.5Round 12🇨🇱 CHILE262♦♥Q+2-11
-9.0Round 9🇮🇩 INDONESIA195♥♠A-1-10
-9.0Round 11🇳🇱 NETHERLANDS262♠♥J+2-10
-11.8Round 1🇳🇴 NORWAY257♠♦Q=+0
-13.7Round 1🇳🇴 NORWAY237♥♦Q=+0
-14.8Round 6🇮🇹 ITALY285♣♥Q+2-17
-18.8Round 9🇮🇩 INDONESIA156♠x♣3-6-18