🇹🇼 CHEN Cheng-Chieh · CHINESE TAIPEI

117rank
-99.9Butler · 192 bds
-0.52per board
±4.7swing
-0.68vs par /bd · #115/126
-0.55adjusted /bd
Butler per round: -11.4 -2 2.5 -10.2 8.4 -11.5 -7.3 0.8 -2.1 7.3 -9.5 -21.8 -16.9 1.5 -28.5 0.8by round

vs par split: bidding -0.59 · play -0.13

Strength of schedule: opponents averaged -0.03/bd (an average draw) → opponent-adjusted -0.55/bd

Card play — on target: opening leads 83.7% #53 of 126 · declarer play 68.0% #102 of 125 · defence 86.4% #54 of 126

Card play by contract type — on target
vs NTvs a suit
Opening leads86.7% (15)82.4% (34)
Declarer play64.7% (17)69.7% (33)
Defence84.0% (25)87.3% (63)

Opening leads by suit led: ♠ 76.9% (13) · ♥ 85.7% (14) · ♦ 77.8% (9) · ♣ 92.3% (13)

vs par by strain: NT -0.26 (55) · a suit -0.92 (135)

vs par by level: part-score -0.72 (64) · game -0.76 (110) · slam -0.56 (16)

By role: declaring -0.47/bd (-3.38 vs par · 104) · defending -0.57/bd (+2.51 vs par · 88)

By vulnerability: vulnerable -0.22/bd (+0.19 vs par · 96) · not vulnerable -0.82/bd (-1.54 vs par · 96)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.ChenA.Jansma – J.JansmaClosed12-11.4-0.95-2.92
Round 2K.ChenD.Hoffman – M.BourkeOpen12-2.0-0.17+0.50
Round 4K.ChenJ.Chen – X.FengClosed12+2.5+0.21+0.25
Round 6K.ChenY.Sagiv – M.PoplilovOpen12-10.2-0.85-3.75
Round 7K.ChenL.Honti – K.MezeiClosed12+8.4+0.70+1.42
Round 8K.ChenB.Moss – S.WinestockOpen12-11.5-0.96-1.42
Round 9K.ChenH.Kondoch – B.WodnianskyOpen12-7.3-0.61+0.08
Round 11K.ChenJ.Coutts – E.MoskovskyOpen12+0.8+0.07-2.25
Round 12K.ChenH.Narita – M.SatoOpen12-2.1-0.18-0.17
Round 13K.ChenR.Choksi – A.RuiaClosed12+7.3+0.61-0.83
Round 15K.ChenH.Caspersen – S.FarholtClosed12-9.5-0.79+1.25
Round 16K.ChenM.Mcgloughlin – H.LillisClosed12-21.8-1.82-2.83
Round 17K.ChenI.Ayaz – A.AcarOpen12-16.9-1.41-0.17
Round 18K.ChenA.Erikson – Y.PyykkoOpen12+1.5+0.12-0.42
Round 20K.ChenC.Mariani – M.BurattiOpen12-28.5-2.38-1.00
Round 22K.ChenO.Correa – G.PoncioniOpen12+0.8+0.07+1.42

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
+13.0Round 6🇮🇱 ISRAEL206♠♥J-1+17
+12.0Round 4🇨🇳 CHINA236♥♦7+1+13
+11.6Round 9🇩🇪 GERMANY32♥x♥J=+14
+11.1Round 7🇭🇺 HUNGARY74♠♠3-1+13
+10.9Round 18🇸🇪 SWEDEN166♣x♦A=+7
+10.8Round 1🇳🇱 NETHERLANDS36♦♥A+1+1
+10.7Round 13🇮🇳 INDIA45♥♠A-1+15
+8.7Round 7🇭🇺 HUNGARY113NT♠5=+3
+8.4Round 8🇺🇸 USA153♣x♥Q-2+5
+7.1Round 11🇳🇿 NEW ZEALAND124♥♥6-1+10
+6.6Round 2🇦🇺 AUSTRALIA204♠♦3-1+17
+6.5Round 17🇹🇷 TURKEY26♥♣7+1+11
+6.2Round 16🇮🇪 IRELAND216♠♦A=+8
+6.1Round 13🇮🇳 INDIA73♦x♠7-1+2
+5.8Round 11🇳🇿 NEW ZEALAND54♥♦A+1-10
+5.8Round 12🇯🇵 JAPAN204♠♣6=+10
+4.7Round 2🇦🇺 AUSTRALIA165♥♣Q-1+10
+4.6Round 18🇸🇪 SWEDEN174NT♠7+1-11
+4.5Round 4🇨🇳 CHINA223♠♦A+1+1
+4.4Round 15🇩🇰 DENMARK23NT♣3=+0
+4.3Round 15🇩🇰 DENMARK41NT♣9-1-5
+4.3Round 18🇸🇪 SWEDEN135♠♠10=+0
+3.9Round 8🇺🇸 USA184♥♠8+3+14
+3.9Round 9🇩🇪 GERMANY93NT♣6=+0
+3.9Round 16🇮🇪 IRELAND183NT♣7=-13
+3.3Round 2🇦🇺 AUSTRALIA133NT♥A-2-2
+3.2Round 8🇺🇸 USA133NT♠6-1+6
+3.1Round 4🇨🇳 CHINA175♥♣A+1+11
+3.1Round 9🇩🇪 GERMANY73NT♦6+4+17
+3.0Round 1🇳🇱 NETHERLANDS16♣♠7=-12
+3.0Round 22🇧🇷 BRAZIL243NT♥Q+1+0
+2.8Round 11🇳🇿 NEW ZEALAND22♠♥6+2+1
+2.8Round 17🇹🇷 TURKEY16♠♦7=-11
+2.7Round 6🇮🇱 ISRAEL222♣♦6=-1
+2.7Round 22🇧🇷 BRAZIL192♥♦5-1+11
+2.6Round 7🇭🇺 HUNGARY52♠♥5=+1
+2.6Round 12🇯🇵 JAPAN183NT♣6-3+7
+2.6Round 15🇩🇰 DENMARK9Pass+11
+2.6Round 22🇧🇷 BRAZIL153NT♥K+1+4
+2.5Round 13🇮🇳 INDIA84♥♦7=+0
+2.5Round 15🇩🇰 DENMARK33♥♠8=+0
+2.5Round 20🇮🇹 ITALY144NT♥6+2+11
+2.5Round 20🇮🇹 ITALY183♠♣7-1+5
+2.4Round 6🇮🇱 ISRAEL213NT♠3+1+0
+2.4Round 13🇮🇳 INDIA24♥♣Q=+0
+2.3Round 18🇸🇪 SWEDEN152♥♦2=+7
+2.2Round 15🇩🇰 DENMARK53♦♣3-1+5
+2.0Round 4🇨🇳 CHINA153NT♥7+2+0
+2.0Round 6🇮🇱 ISRAEL243NT♥3+3+1
+2.0Round 11🇳🇿 NEW ZEALAND14♠♦7+1-11
+1.9Round 1🇳🇱 NETHERLANDS46♠♦K=+0
+1.9Round 2🇦🇺 AUSTRALIA143NT♦3+3+1
+1.8Round 16🇮🇪 IRELAND134♠♦K=+0
+1.7Round 12🇯🇵 JAPAN172NT♣7+1-7
+1.6Round 13🇮🇳 INDIA13NT♠5+3+11
+1.6Round 18🇸🇪 SWEDEN194♥♣9+1+12
+1.5Round 1🇳🇱 NETHERLANDS104♠x♥K-2+8
+1.2Round 9🇩🇪 GERMANY111NT♣K-1+1
+1.2Round 11🇳🇿 NEW ZEALAND64♥♣3+1+0
+1.1Round 2🇦🇺 AUSTRALIA183NT♠7=-2
+1.1Round 7🇭🇺 HUNGARY84♠♥9+1+0
+1.1Round 20🇮🇹 ITALY202♠♥7-1+5
+1.0Round 15🇩🇰 DENMARK63♣♥A+1+0
+1.0Round 17🇹🇷 TURKEY94♣♠A-1+6
+1.0Round 22🇧🇷 BRAZIL213♠♦3=+1
+0.9Round 6🇮🇱 ISRAEL153NT♥J+1+0
+0.9Round 12🇯🇵 JAPAN153♥♠J=+6
+0.9Round 16🇮🇪 IRELAND232♠♥K+2-10
+0.7Round 15🇩🇰 DENMARK114♥♦J+1+11
+0.6Round 1🇳🇱 NETHERLANDS71NT♠Q=-2
+0.6Round 2🇦🇺 AUSTRALIA212♠♦4+1+1
+0.5Round 11🇳🇿 NEW ZEALAND83NT♥2-1+5
+0.5Round 16🇮🇪 IRELAND221NT♠5-1+0
+0.5Round 18🇸🇪 SWEDEN214♠♥4+1+0
+0.4Round 1🇳🇱 NETHERLANDS22♦♦K+2+0
+0.4Round 1🇳🇱 NETHERLANDS114♠x♥Q-2-4
+0.4Round 8🇺🇸 USA144♣♥6-1-4
+0.4Round 11🇳🇿 NEW ZEALAND74♠♣A+1-13
+0.4Round 16🇮🇪 IRELAND153♥♦K-1+8
+0.3Round 7🇭🇺 HUNGARY102♦♣5+2+10
+0.3Round 22🇧🇷 BRAZIL201NT♣K=-2
+0.3Round 22🇧🇷 BRAZIL223NT♠2+2+1
+0.2Round 4🇨🇳 CHINA245♣♠A-1+2
+0.2Round 22🇧🇷 BRAZIL143NT♠7+2+0
+0.2Round 22🇧🇷 BRAZIL183NT♠3+3+11
+0.1Round 4🇨🇳 CHINA211NT♣A=+0
+0.1Round 8🇺🇸 USA194♥♠J+1-11
+0.1Round 11🇳🇿 NEW ZEALAND114♥♠K=+1
+0.1Round 12🇯🇵 JAPAN16Pass-3
+0.1Round 12🇯🇵 JAPAN223NT♠9=+0
+0.1Round 13🇮🇳 INDIA123NT♦J=+1
+0.0Round 1🇳🇱 NETHERLANDS61NT♦3=+2
+0.0Round 12🇯🇵 JAPAN194♠♦K=+0
-0.0Round 17🇹🇷 TURKEY53NT♥Q+1+11
+0.0Round 17🇹🇷 TURKEY124♠♦10+1+0
-0.0Round 20🇮🇹 ITALY135♦♥10=+1
-0.1Round 7🇭🇺 HUNGARY92♠♥J=-1
-0.2Round 4🇨🇳 CHINA194♥♦7=-8
-0.2Round 7🇭🇺 HUNGARY14♠♥2+1+0
-0.2Round 12🇯🇵 JAPAN144♠♥5+1+0
-0.3Round 13🇮🇳 INDIA64♥♦Q=-1
-0.3Round 22🇧🇷 BRAZIL173NT♣2=+1
-0.4Round 6🇮🇱 ISRAEL183♣♥3-1+0
-0.4Round 17🇹🇷 TURKEY84♥♠A-2-1
-0.5Round 4🇨🇳 CHINA141NT♦4+2+4
-0.5Round 13🇮🇳 INDIA104♥♠Q+2-12
-0.6Round 2🇦🇺 AUSTRALIA153NT♠4+1+0
-0.6Round 2🇦🇺 AUSTRALIA224♥♣Q-1-5
-0.8Round 2🇦🇺 AUSTRALIA194♥♣5=+0
-0.9Round 9🇩🇪 GERMANY83NT♥6-2-6
-1.0Round 9🇩🇪 GERMANY12♦♣10+1+0
-1.0Round 9🇩🇪 GERMANY44♠♥Q+1+0
-1.0Round 13🇮🇳 INDIA114♥♣Q+1+0
-1.0Round 18🇸🇪 SWEDEN143♥♣J-2-12
-1.1Round 12🇯🇵 JAPAN232♠♥10+1+0
-1.1Round 16🇮🇪 IRELAND243♦♥K+1-7
-1.1Round 18🇸🇪 SWEDEN204♠♣Q+2+13
-1.1Round 20🇮🇹 ITALY243NT♥7=+0
-1.2Round 4🇨🇳 CHINA183NT♠7+2+0
-1.2Round 22🇧🇷 BRAZIL133♦♠3=+0
-1.2Round 22🇧🇷 BRAZIL162♠♣J=+0
-1.4Round 15🇩🇰 DENMARK104♠♥J+1+0
-1.4Round 17🇹🇷 TURKEY43♦♠A=-1
-1.5Round 1🇳🇱 NETHERLANDS93NT♠3+2+0
-1.5Round 18🇸🇪 SWEDEN184♥♦8=+1
-1.5Round 20🇮🇹 ITALY166♣♦J=+2
-1.6Round 7🇭🇺 HUNGARY21NT♠K+1+0
-1.6Round 9🇩🇪 GERMANY22♠♣5+1-1
-1.6Round 20🇮🇹 ITALY214♥♠J-1-12
-1.7Round 7🇭🇺 HUNGARY64♥♠A+1+0
-1.7Round 15🇩🇰 DENMARK11NT♠10-3-1
-1.8Round 8🇺🇸 USA172♠x♣10-2+3
-1.9Round 9🇩🇪 GERMANY104♥♠4+3-17
-1.9Round 17🇹🇷 TURKEY62♥♣J+2+8
-2.1Round 7🇭🇺 HUNGARY42♠♦A-2-3
-2.2Round 17🇹🇷 TURKEY112NT♠5=-6
-2.3Round 2🇦🇺 AUSTRALIA173♠♥3-1-4
-2.3Round 18🇸🇪 SWEDEN234♣♦7+1-1
-2.4Round 16🇮🇪 IRELAND164♠♣7=+0
-2.6Round 6🇮🇱 ISRAEL144♠♣6+1-11
-2.6Round 11🇳🇿 NEW ZEALAND104♥♣7=+0
-2.8Round 15🇩🇰 DENMARK123NT♠Q+2+11
-3.0Round 6🇮🇱 ISRAEL162NT♠10-2-5
-3.0Round 7🇭🇺 HUNGARY34♠♣6-2-6
-3.0Round 11🇳🇿 NEW ZEALAND34♥♣K-1-6
-3.0Round 13🇮🇳 INDIA93NT♣2-1-5
-3.2Round 17🇹🇷 TURKEY32♠♠9=+0
-3.2Round 20🇮🇹 ITALY174♠♣8+2+11
-3.4Round 8🇺🇸 USA234♥♣A-1-11
-3.4Round 9🇩🇪 GERMANY63NT♥6+2+0
-3.6Round 8🇺🇸 USA224♠♦K-1-5
-3.7Round 12🇯🇵 JAPAN214♠♥J=+0
-3.9Round 4🇨🇳 CHINA133NT♥7-3-10
-4.0Round 4🇨🇳 CHINA203♣♠9=+1
-4.0Round 12🇯🇵 JAPAN131NT♣6-1-5
-4.0Round 13🇮🇳 INDIA52♥♦Q+2-10
-4.1Round 8🇺🇸 USA214♥♣9=+1
-4.3Round 8🇺🇸 USA163♥♦7=+0
-4.3Round 12🇯🇵 JAPAN243♣♠3-1-10
-4.4Round 11🇳🇿 NEW ZEALAND95♥x♠A-4-4
-4.5Round 6🇮🇱 ISRAEL133♠♥Q+2-8
-4.8Round 20🇮🇹 ITALY192♠♥9-1-8
-4.9Round 8🇺🇸 USA207♠♥K-1-12
-5.0Round 16🇮🇪 IRELAND193♠♥4-1-5
-5.2Round 20🇮🇹 ITALY223NT♥10-2-11
-5.4Round 6🇮🇱 ISRAEL234♠♦J=-17
-5.4Round 8🇺🇸 USA245♠♣A+2-3
-5.7Round 1🇳🇱 NETHERLANDS56NT♦8=+0
-5.7Round 2🇦🇺 AUSTRALIA244♠x♠3-1+0
-6.3Round 18🇸🇪 SWEDEN245♦x♠A-1-11
-6.7Round 7🇭🇺 HUNGARY127♣♦J=+0
-6.8Round 22🇧🇷 BRAZIL233♣♠2-3-10
-7.2Round 6🇮🇱 ISRAEL194♥♦J-1-11
-7.2Round 20🇮🇹 ITALY232♥♦9+2-10
-7.3Round 13🇮🇳 INDIA35♠x♣A-1-11
-7.8Round 16🇮🇪 IRELAND142♦x♠Q-2-5
-8.0Round 9🇩🇪 GERMANY54♠♦A-1-5
-8.1Round 6🇮🇱 ISRAEL176♣♠Q-1-10
-9.0Round 17🇹🇷 TURKEY73NT♥6-3-9
-9.1Round 11🇳🇿 NEW ZEALAND44♠♥7=+0
-9.1Round 17🇹🇷 TURKEY104♠♣Q=-10
-9.3Round 9🇩🇪 GERMANY125♥♠2-2-2
-9.5Round 16🇮🇪 IRELAND204♠♣J=+0
-9.6Round 4🇨🇳 CHINA163NT♥J-3-11
-9.6Round 15🇩🇰 DENMARK85♥♠Q-1-4
-9.7Round 16🇮🇪 IRELAND176♣♠10=-10
-10.0Round 20🇮🇹 ITALY155♠♥J-1-6
-10.2Round 2🇦🇺 AUSTRALIA233♥♦4+1-10
-10.3Round 1🇳🇱 NETHERLANDS124♥x♣5-2-12
-10.5Round 18🇸🇪 SWEDEN223NT♣3+1-10
-11.7Round 15🇩🇰 DENMARK76♥♠K-1-13
-12.5Round 1🇳🇱 NETHERLANDS84♠♥4-2-16