🇹🇼 CHEN Jiun-Ming · CHINESE TAIPEI

76rank
-75.8Butler · 176 bds
-0.43per board
±4.6swing
-0.68vs par /bd · #86/101
-0.36adjusted /bd
Butler per round: -16.3 -17.2 17.6 -12.1 -20.5 -7.6 -12.1 -18.4 7.4 -1.6 5by round

vs par split: bidding -0.63 · play -0.06

Strength of schedule: opponents averaged +0.07/bd (a tough draw) → opponent-adjusted -0.36/bd

Card play — on target: opening leads 80.4% #52 of 101 · declarer play 69.0% #78 of 101 · defence 85.1% #66 of 101

Card play by contract type — on target
vs NTvs a suit
Opening leads58.3% (12)87.2% (39)
Declarer play42.9% (7)74.3% (35)
Defence80.0% (20)86.6% (67)

Opening leads by suit led: ♠ 83.3% (12) · ♥ 91.7% (12) · ♦ 75.0% (16) · ♣ 72.7% (11)

vs par by strain: NT -1.28 (39) · a suit -0.52 (135)

vs par by level: part-score +0.21 (56) · game -1.28 (99) · slam -0.26 (19)

By role: declaring -0.50/bd (-2.82 vs par · 87) · defending -0.36/bd (+1.40 vs par · 89)

By vulnerability: vulnerable +0.12/bd (-0.39 vs par · 88) · not vulnerable -0.98/bd (-0.98 vs par · 88)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2C.LinS.Magnusson – D.NikolenkovOpen16-16.3-1.02-0.56
Round 3C.LinM.Eidi – V.VroustisOpen16-17.2-1.07-1.19
Round 5C.LinJ.Brum – S.BarrosOpen16+17.6+1.10-0.62
Round 6C.LinM.Di Franco – A.MannoClosed16-12.1-0.76-3.19
Round 7C.LinS.Auken – R.WellandOpen16-20.5-1.28-1.56
Round 8C.LinJ.Aava – V.KurigClosed16-7.6-0.47+1.19
Round 10C.LinY.Tham – Y.OngClosed16-12.1-0.76-1.12
Round 12C.LinI.Semenov – V.KholomeevOpen16-18.4-1.15-3.50
Round 13C.LinK.Koistinen – S.NiemiClosed16+7.4+0.46+3.19
Round 14C.LinC.Gower – A.AptekerOpen16-1.6-0.10-0.31
Round 17C.LinA.Birman – D.PadonClosed16+5.0+0.31+0.19

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
+15.2Round 14🇿🇦 SOUTH AFRICA203♣x♣Q-6+15
+11.6Round 17🇮🇱 ISRAEL46♦xx♠5-1+18
+11.0Round 5🇧🇷 BRAZIL65♠♦J-2+11
+9.1Round 10🇸🇬 SINGAPORE196♠♥2=+0
+8.1Round 10🇸🇬 SINGAPORE294♠♦A=+3
+7.8Round 5🇧🇷 BRAZIL42♠♥K-2+7
+7.8Round 13🇫🇮 FINLAND87♦♠2=+8
+7.8Round 17🇮🇱 ISRAEL116♥x♥A-2+9
+7.4Round 13🇫🇮 FINLAND65♣x♠9=+4
+7.1Round 2🇨🇭 SWITZERLAND174♠♥Q+2+11
+7.1Round 8🇪🇪 ESTONIA211NT♥6+2+10
+6.4Round 8🇪🇪 ESTONIA293♦♥3+2+8
+6.1Round 10🇸🇬 SINGAPORE262♠♥J+3+9
+5.8Round 2🇨🇭 SWITZERLAND214♠♣K=+11
+5.8Round 13🇫🇮 FINLAND143♠♦A+1+10
+5.7Round 10🇸🇬 SINGAPORE226♠♣J=+0
+5.6Round 17🇮🇱 ISRAEL54♠♥K-2+8
+5.6Round 17🇮🇱 ISRAEL95♥x♠10-2+0
+5.2Round 3🇬🇷 GREECE143♠♣A=+10
+4.8Round 6🇮🇹 ITALY223NT♠Q=+0
+4.6Round 13🇫🇮 FINLAND103NT♣K+1+0
+4.5Round 14🇿🇦 SOUTH AFRICA243♥♦3=+6
+4.4Round 6🇮🇹 ITALY323NT♠10+4+2
+4.2Round 3🇬🇷 GREECE134♠♦K=+10
+4.2Round 10🇸🇬 SINGAPORE315♦♥A=+0
+4.2Round 14🇿🇦 SOUTH AFRICA193♥♠A-4+8
+3.8Round 8🇪🇪 ESTONIA242♥♦K+1+7
+3.6Round 2🇨🇭 SWITZERLAND311NT♠7-2+2
+3.6Round 7🇩🇪 GERMANY64♥♣7=+0
+3.4Round 13🇫🇮 FINLAND14♠♠3+1+14
+2.9Round 3🇬🇷 GREECE12♠♥5+2+2
+2.9Round 8🇪🇪 ESTONIA303NT♠4-1+5
+2.6Round 6🇮🇹 ITALY264♥♠Q-1-12
+2.6Round 7🇩🇪 GERMANY167NT♥6=+0
+2.5Round 3🇬🇷 GREECE83♥♠A-2+8
+2.2Round 12🇷🇺 RUSSIA253♣♦Q-1+4
+2.2Round 12🇷🇺 RUSSIA323NT♠4=+0
+1.9Round 3🇬🇷 GREECE33♦♣4-3+0
+1.9Round 6🇮🇹 ITALY204♥♦2-1+6
+1.9Round 7🇩🇪 GERMANY43♥♠2-1+0
+1.9Round 13🇫🇮 FINLAND122♠♥5=+0
+1.8Round 5🇧🇷 BRAZIL81♠♥A+2+1
+1.8Round 5🇧🇷 BRAZIL144♠♥2+2-11
+1.8Round 17🇮🇱 ISRAEL124♠♥3=+0
+1.7Round 6🇮🇹 ITALY172NT♣2+2-6
+1.7Round 6🇮🇹 ITALY232♥♣Q-2-9
+1.6Round 2🇨🇭 SWITZERLAND303NT♥4=+0
+1.6Round 12🇷🇺 RUSSIA184♥♦K=-1
+1.6Round 17🇮🇱 ISRAEL142♣♠4+1-8
+1.5Round 3🇬🇷 GREECE166♥♦8=+0
+1.5Round 5🇧🇷 BRAZIL94♠♣10-1+10
+1.5Round 7🇩🇪 GERMANY13NT♥8+1+0
+1.3Round 12🇷🇺 RUSSIA194♥♠K+1+4
+1.2Round 3🇬🇷 GREECE42♠♠J+1+0
+1.2Round 6🇮🇹 ITALY273NT♥3-2-1
+1.2Round 7🇩🇪 GERMANY56♠♥4=+0
+1.2Round 7🇩🇪 GERMANY85♥♠3-2+0
+1.2Round 12🇷🇺 RUSSIA274♥♦2=+0
+1.2Round 12🇷🇺 RUSSIA294♠♣Q+1-13
+1.2Round 14🇿🇦 SOUTH AFRICA174♥♠10=+0
+1.2Round 14🇿🇦 SOUTH AFRICA29Pass+3
+1.1Round 5🇧🇷 BRAZIL33NT♠3+1+0
+1.1Round 8🇪🇪 ESTONIA232♠♦10-1-1
+1.1Round 10🇸🇬 SINGAPORE253NT♠J=+0
+1.1Round 13🇫🇮 FINLAND154♠♥Q=+13
+0.9Round 12🇷🇺 RUSSIA303NT♦8+3+14
+0.9Round 14🇿🇦 SOUTH AFRICA253♣♥7=+0
+0.9Round 14🇿🇦 SOUTH AFRICA324♠♥3=-1
+0.6Round 6🇮🇹 ITALY304♥♦2+1+0
+0.6Round 13🇫🇮 FINLAND92♥♠K+1-1
+0.5Round 2🇨🇭 SWITZERLAND224♠♥3-1+10
+0.5Round 2🇨🇭 SWITZERLAND291NT♣4-1+0
+0.5Round 6🇮🇹 ITALY254♥♠6=+1
+0.5Round 7🇩🇪 GERMANY104♠♥5+1+0
+0.5Round 8🇪🇪 ESTONIA174♥♦Q+1+0
+0.5Round 12🇷🇺 RUSSIA314♥♠7-2-6
+0.4Round 8🇪🇪 ESTONIA193♥♠4-2-1
+0.4Round 13🇫🇮 FINLAND114♠♥K+1+0
+0.3Round 8🇪🇪 ESTONIA203NT♦6+1+1
+0.3Round 12🇷🇺 RUSSIA241NT♦2+1+0
+0.3Round 17🇮🇱 ISRAEL84♠♥K+1+0
+0.2Round 3🇬🇷 GREECE54♠♥10=-8
+0.2Round 5🇧🇷 BRAZIL13♦♠4-2-7
+0.2Round 5🇧🇷 BRAZIL24♥♣Q+1+0
+0.2Round 5🇧🇷 BRAZIL123♥♠7+1-6
+0.1Round 5🇧🇷 BRAZIL73NT♦7+3-13
-0.0Round 5🇧🇷 BRAZIL105♦♠7=-2
-0.0Round 5🇧🇷 BRAZIL114♠♦2=+0
-0.0Round 14🇿🇦 SOUTH AFRICA183NT♥7+1+0
-0.0Round 14🇿🇦 SOUTH AFRICA234♥♦8+1+0
-0.1Round 2🇨🇭 SWITZERLAND264♥♠5+2+13
-0.1Round 13🇫🇮 FINLAND74♠♣3+1+0
-0.2Round 10🇸🇬 SINGAPORE203NT♠Q+2+0
-0.3Round 5🇧🇷 BRAZIL163♠♦K+1+6
-0.3Round 12🇷🇺 RUSSIA283♦♣2+1-1
-0.4Round 3🇬🇷 GREECE101NT♥4-1+0
-0.4Round 14🇿🇦 SOUTH AFRICA314♠♦A=-8
-0.5Round 17🇮🇱 ISRAEL62♥♣A-1-5
-0.6Round 2🇨🇭 SWITZERLAND254♦♣7+2-15
-0.6Round 17🇮🇱 ISRAEL13NT♦10+2+0
-0.8Round 5🇧🇷 BRAZIL133NT♥3+2+0
-0.8Round 7🇩🇪 GERMANY72♦♦2-1+1
-0.8Round 13🇫🇮 FINLAND134♠♦5+2+12
-0.9Round 8🇪🇪 ESTONIA253♥♣8=+0
-0.9Round 17🇮🇱 ISRAEL163♦♦K=+0
-1.0Round 14🇿🇦 SOUTH AFRICA303♥♦4-1+2
-1.1Round 2🇨🇭 SWITZERLAND244♠♣8-1+2
-1.1Round 7🇩🇪 GERMANY33NT♣8+2+0
-1.2Round 2🇨🇭 SWITZERLAND284♥♦Q=+0
-1.2Round 8🇪🇪 ESTONIA184♥♦Q+1+4
-1.2Round 8🇪🇪 ESTONIA273NT♠2=+11
-1.2Round 14🇿🇦 SOUTH AFRICA282♠♦8+2-6
-1.3Round 3🇬🇷 GREECE62♠♥K-4+0
-1.4Round 10🇸🇬 SINGAPORE283♥♦K-1+2
-1.4Round 17🇮🇱 ISRAEL104♠♥K=+0
-1.5Round 17🇮🇱 ISRAEL133♦♠K=+0
-1.6Round 6🇮🇹 ITALY211♠♣K+1-1
-1.8Round 8🇪🇪 ESTONIA224♥♣2+2-2
-1.8Round 12🇷🇺 RUSSIA224♥♣K-2-9
-1.9Round 17🇮🇱 ISRAEL151NT♦3+2+10
-2.1Round 6🇮🇹 ITALY283♦♦7+2-1
-2.2Round 2🇨🇭 SWITZERLAND203NT♠Q+3-11
-2.2Round 6🇮🇹 ITALY316♦♦2+1+7
-2.2Round 12🇷🇺 RUSSIA203♥♣A+1-7
-2.3Round 3🇬🇷 GREECE11Pass-3
-2.5Round 13🇫🇮 FINLAND43♠♥5-1-5
-2.5Round 13🇫🇮 FINLAND162♦♣K+1+1
-2.6Round 13🇫🇮 FINLAND24♠♥3+1+0
-2.9Round 5🇧🇷 BRAZIL53NT♠4-2-6
-3.2Round 7🇩🇪 GERMANY116♥♠Q=+0
-3.2Round 8🇪🇪 ESTONIA264♥♥10=+1
-3.2Round 8🇪🇪 ESTONIA324♥♦6=+1
-3.2Round 10🇸🇬 SINGAPORE214♠♣2+1+0
-3.3Round 7🇩🇪 GERMANY143♦♦A=-6
-3.4Round 10🇸🇬 SINGAPORE234♠♣K+3+9
-3.6Round 3🇬🇷 GREECE123NT♥5-1-10
-3.6Round 6🇮🇹 ITALY294♠♥K+2-13
-3.7Round 7🇩🇪 GERMANY24♠♦2-2+0
-3.8Round 10🇸🇬 SINGAPORE243NT♣J-2-6
-4.1Round 5🇧🇷 BRAZIL157♥♦3=+0
-4.1Round 8🇪🇪 ESTONIA284♠♥3+2-11
-4.2Round 7🇩🇪 GERMANY153♦♥2=-7
-4.3Round 3🇬🇷 GREECE73NT♠10=+0
-4.4Round 2🇨🇭 SWITZERLAND184♥♠4=-3
-4.4Round 3🇬🇷 GREECE23NT♦4-5-9
-4.7Round 7🇩🇪 GERMANY137NT♥K=+0
-4.7Round 10🇸🇬 SINGAPORE323NT♠5=-7
-4.7Round 12🇷🇺 RUSSIA234♥♣3-1-6
-4.8Round 2🇨🇭 SWITZERLAND234♠♠2=+0
-4.9Round 14🇿🇦 SOUTH AFRICA214♠♥K-2-6
-5.1Round 2🇨🇭 SWITZERLAND322♥♠K-1-5
-5.2Round 14🇿🇦 SOUTH AFRICA276♦♥A+1-1
-5.5Round 7🇩🇪 GERMANY95♠♣4-2-2
-5.6Round 6🇮🇹 ITALY244♠♣Q-2-14
-5.8Round 2🇨🇭 SWITZERLAND275♣♥A-1-10
-5.8Round 10🇸🇬 SINGAPORE273NT♥J=-3
-5.8Round 12🇷🇺 RUSSIA265♣x♦10-2-12
-5.9Round 17🇮🇱 ISRAEL33NT♣4-1-12
-6.0Round 13🇫🇮 FINLAND33♠♥J=-6
-6.3Round 10🇸🇬 SINGAPORE303♥x♥3-2-4
-6.5Round 6🇮🇹 ITALY196♦♥2=+0
-6.5Round 7🇩🇪 GERMANY124♠♦6+2-11
-6.5Round 14🇿🇦 SOUTH AFRICA264♠♦8+1-11
-7.0Round 12🇷🇺 RUSSIA177♥x♠A-2-12
-7.6Round 10🇸🇬 SINGAPORE174♣♥A-1-10
-7.6Round 17🇮🇱 ISRAEL76♠♦J=+0
-8.0Round 12🇷🇺 RUSSIA214♥♠J=-11
-9.0Round 3🇬🇷 GREECE154♠♣K=-8
-9.0Round 17🇮🇱 ISRAEL27♠♦4-1-17
-9.9Round 6🇮🇹 ITALY183NT♦8=-10
-10.0Round 10🇸🇬 SINGAPORE183NT♠7=-11
-10.1Round 2🇨🇭 SWITZERLAND194♥♠A-4-14
-10.5Round 14🇿🇦 SOUTH AFRICA226♠♥2-1-6
-11.1Round 13🇫🇮 FINLAND52♥x♥K-6+1
-11.5Round 3🇬🇷 GREECE96♥♦A=-11
-14.5Round 8🇪🇪 ESTONIA314♠x♣K-5-14