🇸🇬 LIU Yu Chen · SINGAPORE

16rank
+144.6Butler · 224 bds
+0.65per board
±4.5swing
+0.73vs par /bd · #11/115
+0.65adjusted /bd
Butler per round: -12.5 6.4 39.4 22.5 -1.4 5.3 0.1 11.8 12.6 -19.7 21.5 18.2 -8.2 0.1 17.5 31by round

vs par split: bidding +0.23 · play +0.48

Strength of schedule: opponents averaged +0.01/bd (an average draw) → opponent-adjusted +0.65/bd

Card play — on target: opening leads 78.0% #49 of 115 · declarer play 79.7% #26 of 115 · defence 89.5% #12 of 115

Card play by contract type — on target
vs NTvs a suit
Opening leads85.0% (20)74.4% (39)
Declarer play66.7% (15)84.1% (44)
Defence87.5% (40)90.8% (65)

Opening leads by suit led: ♠ 90.0% (10) · ♥ 85.7% (14) · ♦ 66.7% (15) · ♣ 75.0% (20)

vs par by strain: NT +0.87 (68) · a suit +0.74 (153)

vs par by level: part-score +0.92 (65) · game +0.58 (137) · slam +1.68 (19)

By role: declaring +0.54/bd (-1.14 vs par · 118) · defending +0.77/bd (+2.81 vs par · 106)

By vulnerability: vulnerable +1.48/bd (+0.98 vs par · 112) · not vulnerable -0.19/bd (+0.47 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1P.HawH.Huang – H.GuoOpen14-12.5-0.89-0.50
Round 2P.HawR.Cooper – F.McgrathClosed14+6.4+0.46-0.36
Round 3P.HawG.Percario – R.SauOpen14+39.4+2.81+1.14
Round 4P.HawJ.Cuervo Lopera – F.Von BrudersdorffOpen14+22.5+1.61+1.21
Round 5P.HawY.Yin – S.AmerClosed14-1.4-0.10-0.43
Round 8P.HawV.He – Z.YanClosed14+5.3+0.38-1.29
Round 10P.HawA.Stokka – S.HultClosed14+0.1+0.01-1.29
Round 11P.HawG.Lafont – C.LaloubeyreClosed14+11.8+0.84+0.86
Round 12P.HawKUSHARI SAYANTAN – ROY SAGNIKOpen14+12.6+0.90+4.36
Round 13P.HawE.Moo – T.ChanClosed14-19.7-1.41-1.43
Round 16P.HawO.Tshupelo – K.TabonaClosed14+21.5+1.54+1.36
Round 17P.HawO.Shaheen – A.AshrafClosed14+18.2+1.30+0.00
Round 18P.HawL.Tijssen – V.KiljanOpen14-8.2-0.59+1.57
Round 19P.HawA.Majcher – P.MarcinowskiClosed14+0.1+0.01+2.64
Round 20P.HawT.Nonnenmacher – K.LamOpen14+17.5+1.25+1.14
Round 21P.HawK.Rosenberg – B.KristensenClosed14+31.0+2.21+2.64

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
+14.5Round 4🇨🇴 COLOMBIA47♣♥2=+16
+11.5Round 11🇫🇷 FRANCE73NTx♦9=+13
+11.0Round 21🇺🇸 USA 1133♣x♦2=+13
+10.7Round 12🇮🇳 INDIA136NT♠2-1+17
+10.5Round 17🇪🇬 EGYPT54♥x♦3-3+0
+10.4Round 21🇺🇸 USA 153NT♥2=+0
+10.1Round 19🇵🇱 POLAND127♣♠7-1+17
+10.0Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND104♠♣10-2+13
+9.7Round 11🇫🇷 FRANCE33NT♣10+1+11
+9.4Round 17🇪🇬 EGYPT124♣x♠J-3+11
+9.1Round 5🇺🇸 USA 2133NT♠5=+0
+8.9Round 16BOTSWANA114♠x♣7-3+8
+8.5Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND37♦♦2=-2
+8.3Round 3🇮🇹 ITALY94♥♠5-1+10
+8.3Round 18🇳🇱 NETHERLANDS76♦♠5=+0
+8.0Round 16BOTSWANA24♥♥2-3+13
+7.6Round 17🇪🇬 EGYPT75♦♠3=+10
+7.2Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113♠x♠5-2+5
+7.1Round 2🇦🇺 AUSTRALIA74♠♣7=+0
+6.8Round 8🇳🇿 NEW ZEALAND56♠♠10=+0
+6.6Round 12🇮🇳 INDIA13NT♥6-1+17
+6.0Round 3🇮🇹 ITALY114♠♥9-2+6
+5.8Round 1🇹🇼 CHINESE TAIPEI133NT♦5-2+13
+5.6Round 13🇭🇰 CHINA HONG KONG93NTx♥9-4+14
+5.5Round 1🇹🇼 CHINESE TAIPEI144♥♣7=+1
+5.5Round 10🇸🇪 SWEDEN95♣♠5=+7
+5.2Round 11🇫🇷 FRANCE65♠x♦7-1+7
+5.1Round 3🇮🇹 ITALY122♠♣A+1+0
+5.0Round 1🇹🇼 CHINESE TAIPEI22NT♣3-1+10
+5.0Round 3🇮🇹 ITALY35♦♦6+1+14
+5.0Round 3🇮🇹 ITALY55♠♥A-1-3
+5.0Round 5🇺🇸 USA 233NT♥10-2+11
+4.9Round 18🇳🇱 NETHERLANDS44♥♣A=+9
+4.8Round 16BOTSWANA74♦♣5-4-6
+4.8Round 21🇺🇸 USA 195♥♠10+1+17
+4.7Round 4🇨🇴 COLOMBIA52♠♥2=+9
+4.6Round 3🇮🇹 ITALY84♥♣10-2+9
+4.5Round 21🇺🇸 USA 1123♥♦10-2+6
+4.3Round 16BOTSWANA14♠♥5+2+2
+4.2Round 10🇸🇪 SWEDEN102♥♠6+1+6
+4.1Round 8🇳🇿 NEW ZEALAND92♠♥A=+12
+4.0Round 4🇨🇴 COLOMBIA13♥x♣2-3+3
+4.0Round 8🇳🇿 NEW ZEALAND124♥♣10-2+0
+4.0Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND72♠♦K+2+1
+3.9Round 12🇮🇳 INDIA93NT♠K=+7
+3.8Round 2🇦🇺 AUSTRALIA143NT♠5-3+7
+3.7Round 3🇮🇹 ITALY14♠♥9=-1
+3.7Round 19🇵🇱 POLAND33NT♠7=+7
+3.6Round 4🇨🇴 COLOMBIA33♠♣2+1+6
+3.6Round 10🇸🇪 SWEDEN14♥♦A=+8
+3.6Round 19🇵🇱 POLAND76♦♠A=+7
+3.6Round 19🇵🇱 POLAND144♣♥A=+7
+3.5Round 5🇺🇸 USA 2104♠♦5-1+6
+3.5Round 12🇮🇳 INDIA84♦♥3=+1
+3.4Round 4🇨🇴 COLOMBIA143NT♣2=+0
+3.2Round 12🇮🇳 INDIA74♠x♠K-1+3
+3.2Round 17🇪🇬 EGYPT84♠x♥K-1+0
+3.2Round 21🇺🇸 USA 141♦♥2-2-9
+3.1Round 12🇮🇳 INDIA104♥♠A-1+12
+3.1Round 16BOTSWANA34♠♦A+1+0
+3.1Round 16BOTSWANA103NT♥5+1+17
+2.9Round 2🇦🇺 AUSTRALIA94♠♦9+1+0
+2.9Round 3🇮🇹 ITALY44♠♥A+1+0
+2.9Round 3🇮🇹 ITALY134♠♣4=+0
+2.9Round 13🇭🇰 CHINA HONG KONG143NT♦2=-1
+2.9Round 18🇳🇱 NETHERLANDS24♠♥5-1+5
+2.8Round 10🇸🇪 SWEDEN53♣♠2+1+0
+2.4Round 4🇨🇴 COLOMBIA134♠♦2=+3
+2.3Round 16BOTSWANA133NT♦2+1+1
+2.3Round 17🇪🇬 EGYPT36NT♦9=-11
+2.3Round 18🇳🇱 NETHERLANDS124♠♦K-3+7
+2.2Round 5🇺🇸 USA 263♦♥K+1+1
+2.2Round 13🇭🇰 CHINA HONG KONG84♥♣5+1+0
+2.1Round 2🇦🇺 AUSTRALIA42♣♦10-1+11
+2.1Round 2🇦🇺 AUSTRALIA133♦♥3-1-1
+2.0Round 1🇹🇼 CHINESE TAIPEI104♥♣3=+0
+2.0Round 19🇵🇱 POLAND83♠♣K=+6
+1.9Round 8🇳🇿 NEW ZEALAND43NT♥3=+0
+1.8Round 18🇳🇱 NETHERLANDS104♦♠K-1+1
+1.7Round 19🇵🇱 POLAND44♠♦6=+0
+1.7Round 21🇺🇸 USA 123NT♥10+4+2
+1.6Round 2🇦🇺 AUSTRALIA111NT♠5-1-2
+1.6Round 8🇳🇿 NEW ZEALAND64♥♣K=+0
+1.5Round 18🇳🇱 NETHERLANDS53NT♠9+2+1
+1.5Round 19🇵🇱 POLAND22♣♥Q=+5
+1.4Round 3🇮🇹 ITALY142♠♦A-2+0
+1.4Round 10🇸🇪 SWEDEN84♥♠10+1+1
+1.4Round 11🇫🇷 FRANCE94♥♠Q+1+0
+1.4Round 13🇭🇰 CHINA HONG KONG104♥♠10=+0
+1.4Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND143NT♣7=+0
+1.3Round 11🇫🇷 FRANCE134♠♠4+1+1
+1.3Round 13🇭🇰 CHINA HONG KONG51NT♣9+1+7
+1.3Round 16BOTSWANA84♠♣9+1+1
+1.2Round 12🇮🇳 INDIA124♠♦3+1-11
+1.1Round 8🇳🇿 NEW ZEALAND32NT♣2=+0
+1.0Round 3🇮🇹 ITALY24♥♣9+2+1
+1.0Round 5🇺🇸 USA 285♦x♥K-1+0
+1.0Round 21🇺🇸 USA 164♠♦7=+0
+1.0Round 21🇺🇸 USA 182♥♠A-2+5
+0.9Round 8🇳🇿 NEW ZEALAND13♣♥10+1+1
+0.9Round 12🇮🇳 INDIA144♥♣A+2+11
+0.9Round 17🇪🇬 EGYPT63NT♥8-2+7
+0.9Round 17🇪🇬 EGYPT91NT♣Q-2+1
+0.8Round 2🇦🇺 AUSTRALIA63NT♠7=+1
+0.8Round 3🇮🇹 ITALY103NT♣Q=+0
+0.8Round 8🇳🇿 NEW ZEALAND114♥♥A+2+1
+0.8Round 10🇸🇪 SWEDEN124♠♣9+1+0
+0.8Round 17🇪🇬 EGYPT45♦♥J=-2
+0.7Round 5🇺🇸 USA 2144♥x♠K-1+6
+0.7Round 11🇫🇷 FRANCE106♠♣8=+0
+0.6Round 1🇹🇼 CHINESE TAIPEI114♠♦2=+1
+0.6Round 4🇨🇴 COLOMBIA124♥♣2+1+0
+0.6Round 8🇳🇿 NEW ZEALAND133NT♦9+2-13
+0.6Round 10🇸🇪 SWEDEN41NT♣Q=+2
+0.6Round 19🇵🇱 POLAND133NT♥7+3+13
+0.5Round 5🇺🇸 USA 253NT♦3-3-4
+0.5Round 8🇳🇿 NEW ZEALAND74♠♥Q=+0
+0.5Round 13🇭🇰 CHINA HONG KONG11NT♦3+1-7
+0.5Round 19🇵🇱 POLAND114♥♦9=+11
+0.4Round 17🇪🇬 EGYPT141NT♣5-3-6
+0.4Round 21🇺🇸 USA 174♥♠Q=-1
+0.4Round 21🇺🇸 USA 1142NT♦K-1+4
+0.3Round 1🇹🇼 CHINESE TAIPEI44♠♣7=-1
+0.3Round 5🇺🇸 USA 292♦♣5=-1
+0.3Round 11🇫🇷 FRANCE42♥♣A=-1
+0.3Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND63NT♠2+2+0
+0.1Round 1🇹🇼 CHINESE TAIPEI123♦♣10+1+0
+0.1Round 2🇦🇺 AUSTRALIA84♥♣A+2-1
+0.1Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND134♠♦7=-1
+0.0Round 3🇮🇹 ITALY74♠♣J=-3
+0.0Round 8🇳🇿 NEW ZEALAND24♥♣4=+0
+0.0Round 16BOTSWANA44♣x♣10-2-3
+0.0Round 17🇪🇬 EGYPT114♠♥8=+11
+0.0Round 18🇳🇱 NETHERLANDS12♣♥2-1-2
-0.0Round 18🇳🇱 NETHERLANDS86♠♦J+1+11
-0.0Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND51NT♦J+1+0
-0.1Round 2🇦🇺 AUSTRALIA33NT♥4+2+0
-0.1Round 4🇨🇴 COLOMBIA84♥♣2-1-2
-0.1Round 11🇫🇷 FRANCE143NT♥5-1-4
-0.3Round 4🇨🇴 COLOMBIA95♠♦2+2-12
-0.3Round 8🇳🇿 NEW ZEALAND83NT♥2=-1
-0.3Round 13🇭🇰 CHINA HONG KONG33NT♥J=+1
-0.3Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND43NT♦Q+1+0
-0.4Round 10🇸🇪 SWEDEN73♥♣7-1-5
-0.5Round 17🇪🇬 EGYPT104♠♦3+1+0
-0.5Round 18🇳🇱 NETHERLANDS62♥♣6=+1
-0.5Round 21🇺🇸 USA 134♠♦J=-1
-0.6Round 1🇹🇼 CHINESE TAIPEI14♥♥7-1+4
-0.7Round 12🇮🇳 INDIA32♦♣2+1+0
-0.8Round 4🇨🇴 COLOMBIA22♦♣3+1+0
-0.8Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND92♥♥K=+6
-0.9Round 18🇳🇱 NETHERLANDS31NT♠10-1+1
-0.9Round 19🇵🇱 POLAND95♣♦A=-3
-0.9Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND123NT♦Q-2+6
-1.0Round 10🇸🇪 SWEDEN111NT♥3=+0
-1.0Round 11🇫🇷 FRANCE123♠♠4+1+7
-1.0Round 12🇮🇳 INDIA116♠♣3=+11
-1.1Round 2🇦🇺 AUSTRALIA13♣♠K-1-5
-1.1Round 4🇨🇴 COLOMBIA114♥♦3+1-1
-1.1Round 10🇸🇪 SWEDEN6Pass-3
-1.1Round 11🇫🇷 FRANCE16♦♣4=+2
-1.1Round 12🇮🇳 INDIA42♦♥Q-2+10
-1.1Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND24♠♦7+1-13
-1.2Round 11🇫🇷 FRANCE23NT♠8+2-1
-1.3Round 12🇮🇳 INDIA23NT♥3+2+0
-1.5Round 13🇭🇰 CHINA HONG KONG4Pass-3
-1.5Round 21🇺🇸 USA 1104NT♠Q=+0
-1.6Round 16BOTSWANA144♠♦2=+0
-1.7Round 2🇦🇺 AUSTRALIA104♥♠K-1-6
-1.7Round 16BOTSWANA6Pass-3
-1.8Round 1🇹🇼 CHINESE TAIPEI32♠♦A+2-7
-1.9Round 13🇭🇰 CHINA HONG KONG134♠♦K+1+0
-1.9Round 17🇪🇬 EGYPT26♥♣2=+0
-2.0Round 19🇵🇱 POLAND51NT♠7+1-1
-2.1Round 5🇺🇸 USA 214♠♥Q-1-4
-2.1Round 16BOTSWANA123♦♠3=+0
-2.2Round 4🇨🇴 COLOMBIA71NT♣2=+1
-2.3Round 4🇨🇴 COLOMBIA103NT♣2=+0
-2.4Round 21🇺🇸 USA 1113NT♦10+1+0
-2.5Round 13🇭🇰 CHINA HONG KONG61NT♦A=+1
-2.7Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND12♥♠2-1+1
-2.8Round 2🇦🇺 AUSTRALIA121NT♦3-1-4
-3.0Round 16BOTSWANA56♦♠6+1+2
-3.0Round 21🇺🇸 USA 113♦♦3=+1
-3.2Round 1🇹🇼 CHINESE TAIPEI53NT♥Q+3-2
-3.3Round 1🇹🇼 CHINESE TAIPEI84♠♦9+3-2
-3.3Round 2🇦🇺 AUSTRALIA24♥♦Q=+1
-3.3Round 5🇺🇸 USA 244♠♥A=-9
-3.3Round 5🇺🇸 USA 271NT♠2=-5
-3.6Round 13🇭🇰 CHINA HONG KONG73NT♦Q-2-8
-3.8Round 10🇸🇪 SWEDEN24♠♥K-1-12
-3.9Round 4🇨🇴 COLOMBIA64♥♣2-1-6
-4.0Round 5🇺🇸 USA 224♥♠3-2+0
-4.0Round 11🇫🇷 FRANCE53NT♦10+3-11
-4.0Round 11🇫🇷 FRANCE85♠♣Q+1-1
-4.1Round 10🇸🇪 SWEDEN33♠♥K-2-5
-4.1Round 10🇸🇪 SWEDEN133NT♦J-2-13
-4.3Round 10🇸🇪 SWEDEN141♠x♣10-2-4
-4.4Round 18🇳🇱 NETHERLANDS114♥♣10=+0
-4.7Round 18🇳🇱 NETHERLANDS141NT♠8+1-1
-5.0Round 17🇪🇬 EGYPT131NTx♠3+1-11
-5.1Round 2🇦🇺 AUSTRALIA55♦x♣J-1-6
-5.3Round 1🇹🇼 CHINESE TAIPEI95♦♣J-1-10
-5.3Round 5🇺🇸 USA 2124♠x♥5-3-8
-5.4Round 13🇭🇰 CHINA HONG KONG25♦♠A-2-7
-5.7Round 5🇺🇸 USA 2113NT♣6=+1
-5.9Round 16BOTSWANA94♠♥Q-2-13
-6.3Round 19🇵🇱 POLAND16♠♣2-1-14
-6.4Round 8🇳🇿 NEW ZEALAND103NT♠10-2-7
-6.7Round 1🇹🇼 CHINESE TAIPEI63NT♣9+1-1
-6.9Round 11🇫🇷 FRANCE114♥♠Q+1-11
-7.3Round 3🇮🇹 ITALY65♦♥A+2-17
-7.3Round 12🇮🇳 INDIA54♠xx♣3-1-8
-8.0Round 19🇵🇱 POLAND101♥x♠2-2-8
-8.2Round 20🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND86NT♦10=+0
-8.8Round 13🇭🇰 CHINA HONG KONG115♥x♦4=-8
-9.1Round 12🇮🇳 INDIA64♥x♣A-2-9
-9.6Round 13🇭🇰 CHINA HONG KONG123♥x♠4-2-9
-9.6Round 18🇳🇱 NETHERLANDS93NT♣6=-11
-9.8Round 18🇳🇱 NETHERLANDS137♥♠K=+0
-10.0Round 19🇵🇱 POLAND64♥♣J=-10
-10.3Round 8🇳🇿 NEW ZEALAND146♣♣8-2-11
-10.4Round 17🇪🇬 EGYPT13NT♦7-1-10
-10.9Round 1🇹🇼 CHINESE TAIPEI76♣♠8-1-13