🇨🇭 CHENG Erna · SWITZERLAND

100rank
-157.5Butler · 176 bds
-0.89per board
±4.0swing
-0.50vs par /bd · #81/100
-0.86adjusted /bd
Butler per round: -8 -21.1 -10.6 -21.9 -25.3 -13.9 -8.3 -19.3 -20.1 2.5 -11.5by round

vs par split: bidding +0.07 · play -0.55

Strength of schedule: opponents averaged +0.04/bd (an average draw) → opponent-adjusted -0.86/bd

Card play — on target: opening leads 74.6% #73 of 100 · declarer play 59.4% #93 of 100 · defence 75.5% #97 of 100

Card play by contract type — on target
vs NTvs a suit
Opening leads57.1% (14)80.0% (45)
Declarer play58.8% (17)60.0% (15)
Defence72.4% (29)76.6% (77)

Opening leads by suit led: ♠ 76.9% (13) · ♥ 80.0% (10) · ♦ 75.0% (20) · ♣ 68.8% (16)

vs par by strain: NT -0.68 (56) · a suit -0.39 (119)

vs par by level: part-score -0.25 (77) · game -0.51 (94) · slam -4.25 (4)

By role: declaring -0.99/bd (-2.79 vs par · 70) · defending -0.83/bd (+1.01 vs par · 106)

By vulnerability: vulnerable -0.87/bd (-0.88 vs par · 88) · not vulnerable -0.92/bd (-0.12 vs par · 88)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1V.WaeltiD.Gigliotti – S.PaoluziClosed16-8.0-0.50+1.12
Round 2V.WaeltiI.Piibeleht – A.TaubeOpen16-21.1-1.32-1.56
Round 5V.WaeltiA.Zalai – E.TichyOpen16-10.6-0.66+0.88
Round 6V.WaeltiB.Oigarden – L.GrudeOpen16-21.9-1.37+0.06
Round 7V.WaeltiI.Ozbay – H.OzgurClosed16-25.3-1.58-3.12
Round 10V.WaeltiL.Castells – A.CastellsClosed16-13.9-0.87+0.25
Round 11V.WaeltiA.Tartarin – C.PuilletOpen16-8.3-0.52-1.88
Round 13V.WaeltiK.Bertheau – J.LarssonClosed16-19.3-1.21-2.25
Round 14V.WaeltiA.Della Monta – G.SmykallaOpen16-20.1-1.26-0.50
Round 15V.WaeltiR.Russo – M.LeitaoClosed16+2.5+0.16+0.94
Round 17V.WaeltiM.Haraldsdottir Bender – H.IngolfsdottirOpen16-11.5-0.72+0.56
Round 18V.WaeltiA.Bosi – S.ZoliOpen0+0.0+0.00·

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
+13.2Round 2🇪🇪 ESTONIA264♥♣2+3+17
+10.0Round 5🇭🇺 HUNGARY123NT♠6-1+10
+9.0Round 1🇮🇹 ITALY163♥♥4+1+15
+7.1Round 15🇵🇹 PORTUGAL314♠♦2+2+14
+6.6Round 11🇫🇷 FRANCE204♥♠A=+0
+6.6Round 14🇩🇪 GERMANY74♠♥2=+3
+6.3Round 15🇵🇹 PORTUGAL224♠♣6-1+6
+6.2Round 17🇮🇸 ICELAND295♦♠K-1+3
+5.8Round 10🇪🇸 SPAIN42NT♥5-1+6
+5.6Round 6🇳🇴 NORWAY265♣♦5-2+8
+5.4Round 5🇭🇺 HUNGARY73♠♦6-1+16
+4.8Round 6🇳🇴 NORWAY301NT♠3-1+5
+4.7Round 1🇮🇹 ITALY15♦♠5-1+5
+4.6Round 10🇪🇸 SPAIN144♠♥2=-1
+4.5Round 17🇮🇸 ICELAND203NT♥K+3+2
+4.3Round 15🇵🇹 PORTUGAL173NT♥9=+0
+4.1Round 10🇪🇸 SPAIN162NT♠2-1+5
+4.0Round 11🇫🇷 FRANCE253NT♣8=+0
+3.9Round 5🇭🇺 HUNGARY13♣♦3+2+7
+3.8Round 7🇹🇷 TURKIYE223♥♦2=+0
+3.6Round 1🇮🇹 ITALY34♠♥8-2+2
+3.6Round 14🇩🇪 GERMANY133♥♣K=-2
+3.6Round 15🇵🇹 PORTUGAL183NT♣4-1+5
+3.4Round 14🇩🇪 GERMANY94♥♦6+1+1
+3.3Round 13🇸🇪 SWEDEN325♦♦9-1+6
+2.5Round 17🇮🇸 ICELAND232♠♦Q=+5
+2.2Round 1🇮🇹 ITALY132NT♠9-2+3
+2.2Round 7🇹🇷 TURKIYE292♦♦J+3+10
+2.1Round 2🇪🇪 ESTONIA282♥♥7=+0
+2.1Round 2🇪🇪 ESTONIA314♥♣4-1-2
+2.1Round 15🇵🇹 PORTUGAL214♥♠7+1+1
+2.1Round 17🇮🇸 ICELAND281NT♥6+2-4
+1.8Round 6🇳🇴 NORWAY274♠♦7+1+1
+1.8Round 7🇹🇷 TURKIYE251NT♠3-1-4
+1.8Round 11🇫🇷 FRANCE221NT♠A=+5
+1.7Round 11🇫🇷 FRANCE195♦x♣K-2+5
+1.7Round 11🇫🇷 FRANCE324♥♦Q+1+13
+1.5Round 15🇵🇹 PORTUGAL293NT♥5+1+1
+1.4Round 5🇭🇺 HUNGARY163♣♦4=+1
+1.4Round 13🇸🇪 SWEDEN171NT♣3-2+0
+1.4Round 13🇸🇪 SWEDEN254♥♦A-1+0
+1.3Round 15🇵🇹 PORTUGAL301NT♥7+1+1
+1.3Round 17🇮🇸 ICELAND183♠♦4-3+2
+1.1Round 10🇪🇸 SPAIN81NT♠A-1+2
+1.1Round 13🇸🇪 SWEDEN261NT♥6+1+0
+1.0Round 5🇭🇺 HUNGARY102♥x♠6-2-4
+0.9Round 13🇸🇪 SWEDEN241NT♠6+2+6
+0.7Round 15🇵🇹 PORTUGAL194♥♣K+2+3
+0.6Round 7🇹🇷 TURKIYE243NT♥7=+0
+0.5Round 1🇮🇹 ITALY52♥♦7=+0
+0.5Round 1🇮🇹 ITALY116♠♣9=+11
+0.5Round 5🇭🇺 HUNGARY22♦♠7=+7
+0.5Round 5🇭🇺 HUNGARY64♠♥K+2+12
+0.5Round 5🇭🇺 HUNGARY152♥♠A=+0
+0.5Round 14🇩🇪 GERMANY54♠♦10=+0
+0.5Round 15🇵🇹 PORTUGAL284♠♦J+1-1
+0.4Round 1🇮🇹 ITALY74♦♥A-1+6
+0.4Round 10🇪🇸 SPAIN35♠♦J-2+5
+0.4Round 13🇸🇪 SWEDEN272♠♥K=+0
+0.4Round 13🇸🇪 SWEDEN313♣♣4=+7
+0.4Round 14🇩🇪 GERMANY154♠♣9+2+11
+0.3Round 10🇪🇸 SPAIN52NT♦10+1+6
+0.2Round 7🇹🇷 TURKIYE183NT♠J+2-12
+0.2Round 14🇩🇪 GERMANY13NT♣J+1-10
+0.2Round 17🇮🇸 ICELAND223NT♥10+1+1
+0.1Round 7🇹🇷 TURKIYE312♣♠4+1+0
+0.0Round 17🇮🇸 ICELAND243♦♠4-2+8
-0.1Round 2🇪🇪 ESTONIA244♥♠8=+0
-0.1Round 6🇳🇴 NORWAY314♠♥5+2+11
-0.1Round 7🇹🇷 TURKIYE214♠♣8-2+5
-0.1Round 10🇪🇸 SPAIN15♥♦5=+11
-0.1Round 14🇩🇪 GERMANY34♥♠Q+1+13
-0.1Round 14🇩🇪 GERMANY84♥♠A=+0
-0.1Round 15🇵🇹 PORTUGAL244♥♠Q+1+1
-0.2Round 6🇳🇴 NORWAY194♥♦5+2-11
-0.2Round 17🇮🇸 ICELAND311NT♠2=+1
-0.3Round 2🇪🇪 ESTONIA214♠♥2+1+0
-0.3Round 17🇮🇸 ICELAND191NT♠4-2+11
-0.4Round 11🇫🇷 FRANCE174♠♦10=+0
-0.5Round 2🇪🇪 ESTONIA221♠♣A+3+10
-0.5Round 2🇪🇪 ESTONIA293NT♠4=-2
-0.5Round 6🇳🇴 NORWAY253NT♥J=+0
-0.6Round 1🇮🇹 ITALY143NT♠K-2+5
-0.6Round 11🇫🇷 FRANCE213♥♦A+1-10
-0.6Round 11🇫🇷 FRANCE275♠♦4+1-1
-0.6Round 11🇫🇷 FRANCE294♥♠K+1-13
-0.6Round 13🇸🇪 SWEDEN182♥♦K=+0
-0.7Round 5🇭🇺 HUNGARY92♠♣4-1-1
-0.7Round 10🇪🇸 SPAIN92♥♦7-2+1
-0.9Round 11🇫🇷 FRANCE233NT♦6+2-1
-0.9Round 17🇮🇸 ICELAND173NT♣J=-1
-1.0Round 6🇳🇴 NORWAY213NT♣2-1+8
-1.0Round 7🇹🇷 TURKIYE322♠x♥J-1-6
-1.0Round 13🇸🇪 SWEDEN203NT♠5+1-13
-1.1Round 6🇳🇴 NORWAY183NT♦10+2-1
-1.1Round 6🇳🇴 NORWAY204♥♠J+1-4
-1.1Round 6🇳🇴 NORWAY281NT♠4+2+0
-1.1Round 10🇪🇸 SPAIN114♠♥6+2-1
-1.1Round 13🇸🇪 SWEDEN234♥♦3-2-12
-1.2Round 2🇪🇪 ESTONIA192♠♠3+2-1
-1.3Round 1🇮🇹 ITALY91NT♥2-1-4
-1.3Round 1🇮🇹 ITALY103♥♦Q-1+0
-1.3Round 7🇹🇷 TURKIYE272♦♠4-1-8
-1.4Round 7🇹🇷 TURKIYE282♥♦4-2-1
-1.5Round 7🇹🇷 TURKIYE203NT♥8=-2
-1.5Round 10🇪🇸 SPAIN154♠♥A=+0
-1.5Round 11🇫🇷 FRANCE303NT♥4=+2
-1.5Round 15🇵🇹 PORTUGAL263NT♣7+1-1
-1.6Round 6🇳🇴 NORWAY222♠♦4-2-5
-1.6Round 11🇫🇷 FRANCE283♠♦A=-6
-1.7Round 5🇭🇺 HUNGARY144♠♦4=+0
-1.8Round 1🇮🇹 ITALY25♥♣Q=-1
-1.8Round 5🇭🇺 HUNGARY82♠♣6=-1
-1.8Round 5🇭🇺 HUNGARY114♣♥3-1-2
-1.8Round 11🇫🇷 FRANCE243♠♦4+1-6
-1.9Round 17🇮🇸 ICELAND253♠♣4+2+2
-2.0Round 13🇸🇪 SWEDEN193NT♠10+2-1
-2.1Round 10🇪🇸 SPAIN133NT♥K=+0
-2.1Round 14🇩🇪 GERMANY103♣♠3-4-5
-2.1Round 15🇵🇹 PORTUGAL323NT♦K=+1
-2.4Round 2🇪🇪 ESTONIA184♠♥A+1-1
-2.4Round 7🇹🇷 TURKIYE194♥♦7+1+0
-2.4Round 13🇸🇪 SWEDEN281NT♠5=-5
-2.4Round 14🇩🇪 GERMANY123♣♦7=+7
-2.5Round 1🇮🇹 ITALY86♠♦10+1-5
-2.5Round 2🇪🇪 ESTONIA233NT♦8=-2
-2.6Round 11🇫🇷 FRANCE264♠♣A-1-9
-2.7Round 5🇭🇺 HUNGARY33♠♣5-1-5
-2.7Round 13🇸🇪 SWEDEN224♥♠10=-10
-2.8Round 1🇮🇹 ITALY153♣♦K=-6
-2.8Round 6🇳🇴 NORWAY174♥♦6+3-5
-2.8Round 6🇳🇴 NORWAY233NT♣2+2-1
-2.8Round 10🇪🇸 SPAIN63♥♣Q-1+2
-2.8Round 11🇫🇷 FRANCE182♠♠6=+0
-2.9Round 2🇪🇪 ESTONIA303♠♥10=-10
-2.9Round 15🇵🇹 PORTUGAL20Pass-4
-2.9Round 15🇵🇹 PORTUGAL272♥♣A=+0
-3.0Round 13🇸🇪 SWEDEN294♠♣7+1+0
-3.0Round 14🇩🇪 GERMANY162♦♠2=+0
-3.0Round 17🇮🇸 ICELAND213♣♠8=+0
-3.1Round 5🇭🇺 HUNGARY134♠♣2+1+0
-3.1Round 17🇮🇸 ICELAND303♣x♦10-3-2
-3.3Round 14🇩🇪 GERMANY42NT♦7=-1
-3.4Round 17🇮🇸 ICELAND262♠♥7+1+0
-3.9Round 6🇳🇴 NORWAY324♥♥3+1-4
-4.1Round 7🇹🇷 TURKIYE173♠♠J+1-6
-4.1Round 7🇹🇷 TURKIYE234♠♠3+1-1
-4.6Round 13🇸🇪 SWEDEN303NT♣2=-3
-4.6Round 14🇩🇪 GERMANY63♠♠2+3-6
-4.8Round 2🇪🇪 ESTONIA202♥♠K=-6
-4.8Round 10🇪🇸 SPAIN122♠♥9+2-10
-5.0Round 2🇪🇪 ESTONIA273♠♥A-3-7
-5.1Round 10🇪🇸 SPAIN23♣♥K=-5
-5.2Round 7🇹🇷 TURKIYE264♥♣K-1-12
-5.4Round 2🇪🇪 ESTONIA175♠♠10-2-9
-5.4Round 10🇪🇸 SPAIN103NT♦10+2-17
-5.5Round 1🇮🇹 ITALY61NTx♦2-2-5
-5.7Round 1🇮🇹 ITALY43NT♦J+2-1
-5.9Round 14🇩🇪 GERMANY24♠♥2-2-9
-6.2Round 2🇪🇪 ESTONIA324♠♥2+3-7
-6.5Round 14🇩🇪 GERMANY112♥♦J=-9
-6.6Round 10🇪🇸 SPAIN73NT♥2=+0
-6.7Round 2🇪🇪 ESTONIA251NTx♦Q-2-5
-6.8Round 14🇩🇪 GERMANY143NT♥4+1-1
-7.2Round 17🇮🇸 ICELAND322♠♥4+2-9
-7.4Round 1🇮🇹 ITALY123NT♠10=-7
-7.5Round 15🇵🇹 PORTUGAL236♦♠Q-1-12
-7.9Round 15🇵🇹 PORTUGAL254♠♦K=+0
-8.3Round 17🇮🇸 ICELAND273NT♦5-1-10
-8.9Round 6🇳🇴 NORWAY294♠♦8=+0
-9.0Round 6🇳🇴 NORWAY243NT♦9+2-1
-9.1Round 5🇭🇺 HUNGARY45♦♥4-2-13
-10.7Round 11🇫🇷 FRANCE311NTx♣3-3-9
-10.8Round 13🇸🇪 SWEDEN216♣♦K=-11
-12.9Round 5🇭🇺 HUNGARY54♥♦8-3-13
-12.9Round 7🇹🇷 TURKIYE305♥♠J-5-13