🇨🇦 CHEN Quan · CANADA

84rank
-77.9Butler · 210 bds
-0.37per board
±5.1swing
-0.68vs par /bd · #92/111
-0.07adjusted /bd
Butler per round: -25.4 -11.4 32.1 8.7 -4.8 -19.4 34.3 -8.8 -5.4 -40.7 -6.1 25 -13.6 -44.2 1.8by round

vs par split: bidding -0.04 · play -0.64

Strength of schedule: opponents averaged +0.30/bd (a tough draw) → opponent-adjusted -0.07/bd

Card play — on target: opening leads 75.0% #80 of 111 · declarer play 75.7% #43 of 111 · defence 80.0% #56 of 111

Bidding activity — not a pass: 47.5% #13 of 111 (263/554)

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (9)77.8% (27)
Declarer play79.4% (34)72.2% (36)
Defence86.7% (30)76.4% (55)

Opening leads by suit led: ♠ 62.5% (8) · ♥ 71.4% (7) · ♦ 88.9% (9) · ♣ 75.0% (12)

vs par by strain: NT -0.98 (82) · a suit -0.49 (128)

vs par by level: part-score -0.61 (67) · game -0.79 (128) · slam -0.07 (15)

By role: declaring +0.02/bd (-2.43 vs par · 125) · defending -0.95/bd (+1.89 vs par · 85)

By vulnerability: vulnerable -0.36/bd (-1.41 vs par · 105) · not vulnerable -0.38/bd (+0.05 vs par · 105)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1G.LiuT.Furness – H.RoseOpen14-25.4-1.81-2.93
Round 2G.LiuK.Kuflowski – W.OkrzesikOpen14-11.4-0.81-0.50
Round 3G.LiuM.Janosik – J.Marki-ZayOpen14+32.1+2.29-0.86
Round 4G.LiuA.Goss – G.MorganOpen14+8.7+0.62-0.43
Round 5G.LiuX.Friesen – R.GoorOpen14-4.8-0.34-0.07
Round 6G.LiuM.Hu – A.ZhouOpen14-19.4-1.39-1.57
Round 7G.LiuE.Connell – A.ArmstrongOpen14+34.3+2.45+4.29
Round 9G.LiuD.Tylvad – C.LahrmannOpen14-8.8-0.63-1.36
Round 11G.LiuH.Ma – Z.WangOpen14-5.4-0.39-2.50
Round 12G.LiuI.Moskovitz – D.MsikaOpen14-40.7-2.91-3.21
Round 13G.LiuE.Langer – C.BaumgartOpen14-6.1-0.44-0.71
Round 14G.LiuY.Miura – Y.InamuraOpen14+25.0+1.79+1.93
Round 15G.LiuH.Luba – B.ZhuOpen14-13.6-0.97+0.71
Round 18G.LiuE.Vallet – R.BlochOpen14-44.2-3.16-4.43
Round 19G.LiuA.Brogeland – M.SaetreOpen14+1.8+0.13+1.43

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
+14.7Round 19🇳🇴 NORWAY123NTx♠5=+15
+14.5Round 14🇯🇵 JAPAN204♠♥A+1+16
+12.2Round 14🇯🇵 JAPAN216♦♠8=+12
+11.2Round 2🇵🇱 POLAND203NT♦Q=+10
+10.4Round 15🇺🇸 USA136♠♥J-1+13
+9.7Round 4🇦🇺 AUSTRALIA284♥♠7=+10
+9.5Round 9🇩🇰 DENMARK65♠♦9-1+13
+9.3Round 4🇦🇺 AUSTRALIA244♠x♣K=+5
+9.2Round 7🇮🇪 IRELAND34♥♠8=+12
+9.2Round 15🇺🇸 USA155♠x♦Q=+5
+8.5Round 3🇭🇺 HUNGARY83NT♠3-1+10
+8.4Round 6🇺🇸 USA2206NT♠7=+0
+8.4Round 11🇨🇳 CHINA43NT♣5=+10
+7.6Round 3🇭🇺 HUNGARY54♠♣T=+10
+7.3Round 5🇳🇱 NETHERLANDS63NT♥6=+6
+6.4Round 14🇯🇵 JAPAN276♠♦Q=+12
+6.3Round 3🇭🇺 HUNGARY94♥♣5-1+6
+6.2Round 18🇫🇷 FRANCE213NT♦K=-1
+5.9Round 7🇮🇪 IRELAND23♥♠9-1+10
+5.8Round 11🇨🇳 CHINA93NT♥4-1+6
+5.8Round 13🇩🇪 GERMANY33NT♠6+1+0
+5.7Round 3🇭🇺 HUNGARY73♣♦4=+6
+5.7Round 19🇳🇴 NORWAY13♦♠A-2+8
+5.6Round 14🇯🇵 JAPAN164♥x♠5-3+14
+5.5Round 19🇳🇴 NORWAY106NT♣8-2+13
+5.4Round 7🇮🇪 IRELAND84♠♥9+1+8
+5.3Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND124♠♦K=+0
+5.2Round 5🇳🇱 NETHERLANDS94♥♥5=+6
+4.8Round 7🇮🇪 IRELAND73NT♦3+1+0
+4.6Round 3🇭🇺 HUNGARY116NT♥J=+0
+4.2Round 13🇩🇪 GERMANY53NT♥4-3+6
+4.2Round 14🇯🇵 JAPAN194♥♣A+1+7
+4.2Round 15🇺🇸 USA123NT♥A-2+6
+4.1Round 7🇮🇪 IRELAND103♦♣5-1+5
+3.9Round 5🇳🇱 NETHERLANDS23NT♦Q-2+6
+3.9Round 7🇮🇪 IRELAND133NT♣7=-1
+3.9Round 13🇩🇪 GERMANY113NT♦7-1+10
+3.8Round 2🇵🇱 POLAND274♠♥A+1+1
+3.7Round 4🇦🇺 AUSTRALIA263NT♣6-1+6
+3.7Round 9🇩🇰 DENMARK105♦♣A+1+0
+3.5Round 13🇩🇪 GERMANY71NT♥K=+6
+3.3Round 4🇦🇺 AUSTRALIA174♠♣K-1+10
+3.3Round 6🇺🇸 USA2214♥♠6-1+5
+3.2Round 18🇫🇷 FRANCE284♠♦T+2+1
+3.1Round 15🇺🇸 USA144♠x♦J-1+7
+2.9Round 3🇭🇺 HUNGARY42♥♠A+1+2
+2.9Round 11🇨🇳 CHINA73NT♠9+1+1
+2.9Round 11🇨🇳 CHINA124♥♠A+1-13
+2.8Round 6🇺🇸 USA2241NT♦4=-1
+2.7Round 11🇨🇳 CHINA144♥♦A+1+0
+2.7Round 19🇳🇴 NORWAY73♦♣9+1+0
+2.5Round 3🇭🇺 HUNGARY123NT♦T+3-12
+2.4Round 3🇭🇺 HUNGARY62♥♠Q+2+1
+2.4Round 4🇦🇺 AUSTRALIA272NT♥T=+0
+2.4Round 13🇩🇪 GERMANY12♥♦K+1+2
+2.3Round 4🇦🇺 AUSTRALIA233NT♣5+1-13
+2.2Round 6🇺🇸 USA2194♥♠A+1+0
+2.2Round 9🇩🇰 DENMARK123NT♥4+1-1
+2.1Round 2🇵🇱 POLAND226♥♥4-1+15
+2.1Round 5🇳🇱 NETHERLANDS143NT♠4+1+1
+2.0Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND25♥♦K+2-12
+1.9Round 4🇦🇺 AUSTRALIA224♠♣4+1+0
+1.8Round 19🇳🇴 NORWAY44♠♦Q+1+0
+1.7Round 15🇺🇸 USA1113♣♣J+2+13
+1.6Round 3🇭🇺 HUNGARY34♠♣8+1+0
+1.6Round 9🇩🇰 DENMARK13♠♦A=+0
+1.5Round 7🇮🇪 IRELAND123♠♣J=+0
+1.5Round 11🇨🇳 CHINA54♥♠A-2-5
+1.5Round 14🇯🇵 JAPAN243♦♦2-1-2
+1.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND83♠♥J-1-2
+1.4Round 2🇵🇱 POLAND234♥♣K+2+13
+1.4Round 6🇺🇸 USA2154♠♥A=+1
+1.3Round 7🇮🇪 IRELAND54♥♥5-1-2
+1.2Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND132♠♥K=-1
+1.2Round 12🇮🇱 ISRAEL194♠♣K-1+6
+1.2Round 19🇳🇴 NORWAY21NT♣T=+1
+1.1Round 5🇳🇱 NETHERLANDS133NT♦K+3+13
+1.1Round 9🇩🇰 DENMARK113NT♦Q=+11
+1.0Round 13🇩🇪 GERMANY83NT♦K+3-11
+0.9Round 4🇦🇺 AUSTRALIA203NT♠6+2+1
+0.9Round 9🇩🇰 DENMARK93♠♣K=+0
+0.8Round 2🇵🇱 POLAND253NT♠3+3-10
+0.8Round 4🇦🇺 AUSTRALIA164♠♣6+1+0
+0.8Round 7🇮🇪 IRELAND92♥♦K=+5
+0.8Round 15🇺🇸 USA164♠♥K+2-14
+0.7Round 9🇩🇰 DENMARK33NT♣5+1+0
+0.6Round 5🇳🇱 NETHERLANDS41NT♣2=+2
+0.6Round 6🇺🇸 USA2253♣♠A-1+2
+0.4Round 12🇮🇱 ISRAEL174♠♥2=+0
+0.3Round 7🇮🇪 IRELAND41NT♥3=+5
+0.2Round 5🇳🇱 NETHERLANDS123♠♥9-1-5
+0.2Round 12🇮🇱 ISRAEL232NT♦A=+0
+0.2Round 19🇳🇴 NORWAY133♠♣T+1+10
+0.1Round 2🇵🇱 POLAND163NT♠5+4+15
+0.1Round 3🇭🇺 HUNGARY23NT♣4-1-5
+0.1Round 3🇭🇺 HUNGARY102♥♦T+3-9
+0.1Round 9🇩🇰 DENMARK143♦♠Q-1-9
+0.1Round 11🇨🇳 CHINA114♣♥3=+5
+0.1Round 12🇮🇱 ISRAEL204♥♠K+1+0
+0.1Round 15🇺🇸 USA114♠♣T+1+0
+0.1Round 18🇫🇷 FRANCE193♥♠J-1+3
+0.1Round 18🇫🇷 FRANCE221NT♦T=+1
-0.1Round 14🇯🇵 JAPAN263NT♠9+1+0
-0.2Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠♣A+1+0
-0.2Round 4🇦🇺 AUSTRALIA184♠♣T+1+0
-0.3Round 19🇳🇴 NORWAY62♥♠A+1+10
-0.4Round 6🇺🇸 USA2261NT♠3=+1
-0.4Round 12🇮🇱 ISRAEL262♠♦A+1-10
-0.5Round 2🇵🇱 POLAND243NT♠9+1-1
-0.5Round 7🇮🇪 IRELAND12♠♥4-2+5
-0.5Round 11🇨🇳 CHINA34♥♠T=-1
-0.6Round 2🇵🇱 POLAND283NT♠J+1-13
-0.6Round 7🇮🇪 IRELAND113♣♠7=+1
-0.6Round 11🇨🇳 CHINA131NT♥2=-2
-0.6Round 13🇩🇪 GERMANY61NT♠Q+1+0
-0.6Round 14🇯🇵 JAPAN233NT♠6+1-12
-0.6Round 18🇫🇷 FRANCE173NT♦2+1-1
-0.7Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND61NT♠3+1-7
-0.7Round 6🇺🇸 USA2273NT♥9+1-1
-0.8Round 5🇳🇱 NETHERLANDS82♣♥A-1-4
-0.8Round 7🇮🇪 IRELAND63♣♠9-2+9
-0.8Round 9🇩🇰 DENMARK84♥♣2+1+0
-0.8Round 14🇯🇵 JAPAN173♣♠A+1+0
-0.8Round 15🇺🇸 USA1134♥♣7+1+0
-0.9Round 2🇵🇱 POLAND183NT♣5=+11
-0.9Round 12🇮🇱 ISRAEL241NT♥5=+1
-0.9Round 13🇩🇪 GERMANY134♠♣2=-1
-1.0Round 7🇮🇪 IRELAND142♠♥7-1+3
-1.1Round 14🇯🇵 JAPAN154♠♣K+1+0
-1.2Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113♠♣5=-1
-1.2Round 11🇨🇳 CHINA84♥♣A=+0
-1.2Round 14🇯🇵 JAPAN183NT♥2+1+0
-1.3Round 3🇭🇺 HUNGARY142♠x♦A-2+0
-1.3Round 13🇩🇪 GERMANY103♣♠6=+10
-1.3Round 19🇳🇴 NORWAY92NT♦3-1-4
-1.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND14♠♣A+1+0
-1.4Round 14🇯🇵 JAPAN254♠♥5+3-14
-1.5Round 5🇳🇱 NETHERLANDS54♠♦K=+0
-1.5Round 12🇮🇱 ISRAEL153NT♠5-1+0
-1.7Round 15🇺🇸 USA1125♦♣3+1+11
-1.8Round 11🇨🇳 CHINA13NT♣4+1+0
-2.0Round 2🇵🇱 POLAND171♠♥4-1-4
-2.0Round 18🇫🇷 FRANCE253NT♦4+3-1
-2.1Round 13🇩🇪 GERMANY21♠♦Q+1+7
-2.2Round 12🇮🇱 ISRAEL214♠♦8=+1
-2.3Round 5🇳🇱 NETHERLANDS104♠♥4-2-13
-2.3Round 19🇳🇴 NORWAY84♥♠2=-7
-2.4Round 18🇫🇷 FRANCE243♥♣2-1-10
-2.5Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND34♥♦A=+13
-2.5Round 4🇦🇺 AUSTRALIA214♣♦K=-6
-2.7Round 18🇫🇷 FRANCE181NT♠4=-6
-2.8Round 18🇫🇷 FRANCE203NT♣T+2+0
-2.9Round 9🇩🇰 DENMARK53NT♥6-1-13
-2.9Round 13🇩🇪 GERMANY96NT♠4+1-11
-3.1Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND143NT♦4=+1
-3.2Round 15🇺🇸 USA1144♥♦T=+1
-3.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND71NT♠9-1+0
-3.4Round 5🇳🇱 NETHERLANDS113NT♣6+1+0
-3.6Round 2🇵🇱 POLAND212NT♥3-2-7
-3.7Round 5🇳🇱 NETHERLANDS31NT♦2+2-1
-3.7Round 12🇮🇱 ISRAEL253NT♣2=-10
-3.8Round 3🇭🇺 HUNGARY136NT♥T-1-17
-3.8Round 6🇺🇸 USA2174♠♥A+1-1
-3.8Round 18🇫🇷 FRANCE161NT♠6-3-1
-3.8Round 19🇳🇴 NORWAY32♠x♣K-2-4
-3.9Round 13🇩🇪 GERMANY123NT♦A-3-10
-4.0Round 12🇮🇱 ISRAEL277NT♣T=+0
-4.1Round 9🇩🇰 DENMARK23NT♠5-1-12
-4.4Round 2🇵🇱 POLAND154♠♥7+2-17
-4.4Round 6🇺🇸 USA2166♠♠2=+13
-4.4Round 6🇺🇸 USA2283NT♥T-1-6
-4.4Round 19🇳🇴 NORWAY53NT♠5-1-6
-4.5Round 12🇮🇱 ISRAEL166NT♠4+1-11
-4.6Round 15🇺🇸 USA183NT♠K-2-6
-4.7Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND54♥♦6-1-12
-4.8Round 9🇩🇰 DENMARK73NT♠5=+13
-4.8Round 9🇩🇰 DENMARK133♣♦A+1-10
-4.8Round 12🇮🇱 ISRAEL283♦x♦7-3-4
-4.9Round 5🇳🇱 NETHERLANDS71NT♦A-2-2
-5.1Round 3🇭🇺 HUNGARY14♥♣A-1-4
-5.1Round 4🇦🇺 AUSTRALIA254♠♣K-1-5
-5.1Round 13🇩🇪 GERMANY144♥♦4-2-5
-5.3Round 2🇵🇱 POLAND192♠♥J=-6
-6.7Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND95♥x♦K=-11
-6.8Round 14🇯🇵 JAPAN223NT♠3-1-5
-7.3Round 11🇨🇳 CHINA63NT♥6-2-11
-7.4Round 14🇯🇵 JAPAN284♠♦K=-1
-7.5Round 4🇦🇺 AUSTRALIA154♠♣K+1-2
-7.9Round 6🇺🇸 USA2223NT♦8-1-10
-7.9Round 18🇫🇷 FRANCE152♥♦K-2-12
-8.0Round 12🇮🇱 ISRAEL185♣x♠Q=-4
-8.1Round 6🇺🇸 USA2235♦x♠A-2-12
-8.4Round 6🇺🇸 USA2186♥♦A-1-13
-8.5Round 11🇨🇳 CHINA24♠♥A+1-11
-8.6Round 5🇳🇱 NETHERLANDS14♣♦9-1-10
-8.6Round 19🇳🇴 NORWAY144♠♣K=-8
-8.7Round 18🇫🇷 FRANCE274♠x♠6=-10
-9.0Round 15🇺🇸 USA174♠♣4+1-11
-9.3Round 19🇳🇴 NORWAY115♣x♠A-3-8
-9.8Round 11🇨🇳 CHINA103NT♣T-3-14
-10.1Round 13🇩🇪 GERMANY46♣♠A-1-13
-10.3Round 4🇦🇺 AUSTRALIA194♠x♦Q=-12
-11.0Round 18🇫🇷 FRANCE233NT♥7-1-12
-11.2Round 9🇩🇰 DENMARK43♥x♠J=-11
-11.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND104♠x♥T-2-9
-11.4Round 15🇺🇸 USA192♠x♥K-5-10
-11.9Round 18🇫🇷 FRANCE264♥x♣3-1-13
-12.4Round 15🇺🇸 USA1104♠x♦K-3-5
-12.6Round 12🇮🇱 ISRAEL223♣x♠K=-14
-13.5Round 2🇵🇱 POLAND266♣x♠T-5-14