CHANG Keng-Jui · CT 360

70rank
+3.9Butler · 80 bds
+0.05per board
±4.8swing
+1.43vs par /bd · #12/144
+0.42adjusted /bd
Butler per round: 34.9 4.8 -1.7 -9.7 -1.9 -14.7 -4.9 11.9 2.8 -17.6by round

vs par split: bidding +1.14 · play +0.29

Strength of schedule: opponents averaged +0.37/bd (a tough draw) → opponent-adjusted +0.42/bd

Card play — on target: opening leads 73.7% #97 of 144 · declarer play 68.2% #81 of 144 · defence 80.4% #71 of 144

Bidding activity — not a pass: 43.8% #46 of 144 (95/217)

Card play by contract type — on target
vs NTvs a suit
Opening leads75.0% (8)72.7% (11)
Declarer play60.0% (5)70.6% (17)
Defence82.4% (17)79.3% (29)

Opening leads by suit led: ♠ 50.0% (6) · ♥ 66.7% (3) · ♦ 87.5% (8) · ♣ 100.0% (2)

vs par by strain: NT +1.80 (25) · a suit +1.25 (55)

vs par by level: part-score +1.79 (34) · game +0.91 (44) · slam +6.50 (2)

By role: declaring +1.11/bd (-1.29 vs par · 34) · defending -0.73/bd (+3.44 vs par · 46)

By vulnerability: vulnerable +0.38/bd (+1.68 vs par · 38) · not vulnerable -0.26/bd (+1.19 vs par · 42)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1L.WuB.Pang – C.LiuOpen8+34.9+4.36+2.88
Round 2L.WuZ.Zabradi – G.SzaboOpen8+4.8+0.60-2.38
Round 3L.WuH.Chiu – Y.ChangClosed8-1.7-0.21-0.12
Round 4L.WuM.Polak – A.DanekClosed8-9.7-1.21+2.88
Round 5L.WuA.Zaidenberg Gatt – S.Zaidenberg GattClosed8-1.9-0.24+0.38
Round 6L.WuA.Chen – J.XiaoClosed8-14.7-1.84+1.75
Round 7L.WuY.Xu – E.LiuOpen8-4.9-0.61+0.12
Round 8L.WuW.Romanska – J.ZietarskiOpen8+11.9+1.49+2.50
Round 9L.WuO.Brylski – S.PsutyOpen8+2.8+0.35+4.88
Round 10L.WuF.Asplund Sivelind – M.NordqvistOpen8-17.6-2.20+1.38

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
+12.8Round 7CHINA SMZY SPLINTER234♠x♥A=+12
+10.6Round 1BRIDGE SCHOOL TEAM2284♥♦5=+14
+7.6Round 4POLAK MALI266♠♦5=+0
+7.3Round 1BRIDGE SCHOOL TEAM2253NT♥T=-1
+6.8Round 1BRIDGE SCHOOL TEAM2262♥♦J+1+13
+6.5Round 8VERCO CKIS SKAWINA63NT♠6=+0
+6.0Round 8VERCO CKIS SKAWINA52♠♥A+2+14
+5.5Round 6JACK115♦♠9-2+11
+5.4Round 2CZE HUN45♦♥A+2-13
+5.3Round 7CHINA SMZY SPLINTER253NT♠3-2+6
+5.1Round 5USRAEL13NT♦3-1+11
+5.1Round 9KRAKOW I BRODNICA114♥♣2=-1
+4.9Round 1BRIDGE SCHOOL TEAM2242♥♠T=+8
+4.8Round 3CT U16125♣♠J=-2
+3.8Round 2CZE HUN23♠♦A-2+7
+3.4Round 5USRAEL63NT♥5-1+10
+3.3Round 8VERCO CKIS SKAWINA72♦♥4+2+11
+3.2Round 6JACK132NT♠9-1+5
+3.0Round 1BRIDGE SCHOOL TEAM2272NT♠6-3+1
+2.8Round 1BRIDGE SCHOOL TEAM2214♠♣J=+0
+2.8Round 5USRAEL32♠♦K-2+0
+2.5Round 2CZE HUN14♠♣6=+0
+2.4Round 6JACK144♥♦J+2+2
+2.4Round 8VERCO CKIS SKAWINA23NT♦J=-1
+2.2Round 3CT U16112♦♥4=+5
+2.1Round 3CT U16164♠♣3=+0
+2.1Round 4POLAK MALI253♦♠7+1+0
+2.1Round 4POLAK MALI274♠♥7-1+5
+1.8Round 9KRAKOW I BRODNICA123♥♦6-1+5
+1.7Round 1BRIDGE SCHOOL TEAM2234♣♠T=-7
+1.7Round 6JACK123NT♦2-2+5
+1.6Round 2CZE HUN32♠♣Q+3-9
+1.6Round 4POLAK MALI283NT♠2-1+5
+1.6Round 10THE VIKINGS284♥♣A-1+5
+1.5Round 9KRAKOW I BRODNICA153♦♥Q-3+1
+1.4Round 7CHINA SMZY SPLINTER243♠♣A=-1
+1.3Round 3CT U16184♠♥J+1-11
+1.2Round 5USRAEL72NT♦6-1-1
+1.2Round 9KRAKOW I BRODNICA143NT♦8+3+14
+0.7Round 9KRAKOW I BRODNICA132♦♥3+1+11
+0.5Round 9KRAKOW I BRODNICA171NT♣A+1+8
+0.3Round 7CHINA SMZY SPLINTER224♥♦A-1+4
+0.3Round 10THE VIKINGS223♦♠9+2+6
+0.1Round 8VERCO CKIS SKAWINA11NT♣A+1-1
-0.2Round 3CT U16174♠x♦Q-1+5
-0.4Round 3CT U16144♠♦A=+9
-0.6Round 5USRAEL54♠♥7=+1
-0.8Round 7CHINA SMZY SPLINTER262♠♥K+1+0
-1.0Round 2CZE HUN53♥♦4-2+1
-1.3Round 8VERCO CKIS SKAWINA34♥♦Q-1-5
-1.4Round 6JACK152♥♠K+2+6
-1.4Round 7CHINA SMZY SPLINTER213♠♦K-2+0
-1.5Round 8VERCO CKIS SKAWINA43NT♠7+1+12
-1.6Round 2CZE HUN85♦♥K=+1
-1.6Round 4POLAK MALI243♣♦2+1+7
-1.6Round 10THE VIKINGS233♥x♣T-1-2
-1.7Round 5USRAEL82NT♦A-2+0
-2.1Round 10THE VIKINGS263♥♣9=+0
-2.2Round 1BRIDGE SCHOOL TEAM2223♣♠T-1-5
-2.5Round 2CZE HUN61NT♥3+1+0
-2.6Round 3CT U16154♠♦9+2-1
-3.4Round 2CZE HUN72♠♣K=-6
-3.4Round 10THE VIKINGS243NT♥A-1-5
-3.6Round 8VERCO CKIS SKAWINA83NT♥3-1-10
-4.0Round 9KRAKOW I BRODNICA164NT♦6+1+13
-4.0Round 9KRAKOW I BRODNICA184♠♦5-1-12
-4.1Round 10THE VIKINGS252♣♥Q+3+7
-4.1Round 10THE VIKINGS274♠♦A+1+0
-4.2Round 10THE VIKINGS213NT♠4=+0
-4.7Round 4POLAK MALI215♣♠K+1+0
-5.0Round 5USRAEL22♠♥7=-11
-5.5Round 6JACK173NT♦3=+1
-6.6Round 4POLAK MALI225♦♠9-2-7
-7.1Round 5USRAEL43NT♠2-2-7
-8.9Round 3CT U16134♠♦2-1-6
-8.9Round 6JACK164♠x♣6=-4
-10.2Round 4POLAK MALI236♠♦7+1+13
-10.4Round 7CHINA SMZY SPLINTER273NTx♦8+2-8
-11.7Round 6JACK184♣x♠J-3-12
-12.1Round 7CHINA SMZY SPLINTER283NT♠Q=-12