CHEN Zheng · WONDERS INFO

319rank
+10.7Butler · 110 bds
+0.10per board
±4.7swing
-0.89vs par /bd · #609/672
-0.19adjusted /bd
Butler per round: 12 43 -19.5 -12.2 -19.2 -4.7 7.3 13.6 -3.3 -0.1 -6.2by round

vs par split: bidding +0.36 · play -1.24

Strength of schedule: opponents averaged -0.29/bd (an easy draw) → opponent-adjusted -0.19/bd

Card play — on target: opening leads 83.3% #305 of 671 · declarer play 63.2% #601 of 671 · defence 71.4% #649 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·83.3% (24)
Declarer play·63.2% (19)
Defence·71.4% (42)

Opening leads by suit led: ♠ 50.0% (2) · ♥ 87.5% (8) · ♦ 80.0% (5) · ♣ 88.9% (9)

vs par by strain: a suit -0.88 (83)

vs par by level: part-score -0.43 (35) · game -0.88 (43) · slam -4.00 (5)

By role: declaring +0.68/bd (-2.34 vs par · 59) · defending -0.58/bd (+0.78 vs par · 51)

By vulnerability: vulnerable +0.61/bd (-0.22 vs par · 63) · not vulnerable -0.59/bd (-1.79 vs par · 47)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2C.WangY.Niu – Y.ZhangOpen10+12.0+1.20-3.10
Round 4C.WangX.Chen – L.SunOpen10+43.0+4.30+4.50
Round 5C.WangK.Zhang – S.LangClosed10-19.5-1.95-2.90
Round 6C.WangE.Shanurin – V.TatarkinClosed10-12.2-1.22-0.50
Round 7X.ChenH.Li – J.LvClosed10-19.2-1.92-2.70
Round 8C.WangW.Amornmeswarintara – P.JariyanantanetrClosed10-4.7-0.47-0.40
Round 9C.WangY.Shi – T.ZhouClosed10+7.3+0.73+0.20
Round 10C.WangS.Chen – Y.JiangOpen10+13.6+1.36-0.20
Round 11X.ChenH.Li – R.WangOpen10-3.3-0.33+0.20
Round 12C.WangA.Ruia – A.SequeiraClosed10-0.1-0.01-1.30
Round 13C.WangM.Xu – Y.SunClosed10-6.2-0.62-3.60

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
+10.8Round 10SHANGHAI YOUTH 334♥♥2+2+11
+10.0Round 4SH PANYU MIDDLE SCHOOL75♣♣4=+10
+8.7Round 4SH PANYU MIDDLE SCHOOL15♣♥K+1+8
+8.7Round 7NINGBOYONGGUAN85♦x♥7=+6
+8.7Round 11TRIJET123N♥3-2+13
+8.2Round 10SHANGHAI YOUTH 394♥x♠4=+10
+8.1Round 2SHANGHAI YOUTH 5146N♣J=-15
+7.7Round 9KOREA-CHINA224♠♦6+1+6
+6.7Round 2SHANGHAI YOUTH 5193N♠4-4+8
+6.7Round 4SH PANYU MIDDLE SCHOOL65♦x♠Q-3-4
+6.5Round 12INDIA RED223N♥K=+6
+6.5Round 12INDIA RED243N♣4=+11
+6.4Round 5BEIJING BEI DI KE156♦♦J=-2
+5.3Round 6MOSCOW216♥♣A-1+11
+5.1Round 2SHANGHAI YOUTH 5161N♠9-3+6
+4.9Round 8THAILAND/CBLT162♦♥4-2+6
+4.8Round 8THAILAND/CBLT191N♣5+3+2
+4.8Round 10SHANGHAI YOUTH 372♦♠K=+11
+4.8Round 13SHANGHAI OCEAN103N♥K-1+6
+4.7Round 11TRIJET164♠♣9+1+0
+4.5Round 11TRIJET183♠♦6-2+3
+4.4Round 9KOREA-CHINA304♠x♣K-1+6
+4.1Round 13SHANGHAI OCEAN24♥♥Q+1+0
+3.7Round 8THAILAND/CBLT154♥♦Q-1+6
+3.5Round 4SH PANYU MIDDLE SCHOOL103♣♥Q-1+6
+3.4Round 4SH PANYU MIDDLE SCHOOL83♠♦Q-1+5
+3.3Round 2SHANGHAI YOUTH 5122♠♥10-2+2
+3.3Round 9KOREA-CHINA273♦♥5-2+6
+3.1Round 12INDIA RED274♥♣5+1-5
+2.9Round 4SH PANYU MIDDLE SCHOOL52♥♦A=+5
+2.7Round 4SH PANYU MIDDLE SCHOOL44♦♣A+1+10
+2.7Round 4SH PANYU MIDDLE SCHOOL92♥♣8-2+5
+2.6Round 8THAILAND/CBLT122♥♦4+1+0
+1.9Round 2SHANGHAI YOUTH 5111N♥4+1+0
+1.9Round 8THAILAND/CBLT181N♠J+1+0
+1.8Round 13SHANGHAI OCEAN33N♦10+3+1
+1.5Round 4SH PANYU MIDDLE SCHOOL33N♥9+1-1
+1.5Round 13SHANGHAI OCEAN53N♠K+3-12
+1.3Round 5BEIJING BEI DI KE112♠♦A=+5
+1.3Round 11TRIJET172♠♣Q-1+4
+1.3Round 12INDIA RED304♥♦A-1+5
+1.2Round 11TRIJET194♠♣J+1+1
+1.1Round 8THAILAND/CBLT142♥♠3=+0
+1.1Round 9KOREA-CHINA231N♥4+2+1
+1.0Round 6MOSCOW283N♥7+1+1
+0.9Round 2SHANGHAI YOUTH 5154♠♠9=-1
+0.9Round 4SH PANYU MIDDLE SCHOOL23N♣6+2+1
+0.9Round 8THAILAND/CBLT134♠♠2+2+7
+0.9Round 9KOREA-CHINA244♥♥10=-5
+0.2Round 2SHANGHAI YOUTH 5203N♥2+3-13
+0.2Round 6MOSCOW274♥♦K-1+5
+0.1Round 7NINGBOYONGGUAN32♥♦5=-9
-0.0Round 10SHANGHAI YOUTH 3102♠♣5=+0
-0.0Round 13SHANGHAI OCEAN95♠♥2=+0
-0.1Round 7NINGBOYONGGUAN64♥♣3=-1
-0.2Round 7NINGBOYONGGUAN44♥♠3=-1
-0.3Round 10SHANGHAI YOUTH 354♠♣3+2-11
-0.4Round 6MOSCOW233♥♦4=+0
-0.4Round 6MOSCOW303N♠2-1-5
-0.4Round 9KOREA-CHINA292♥♠K=+0
-0.5Round 10SHANGHAI YOUTH 364♠♣A=+0
-0.5Round 12INDIA RED235♦♠A-1-6
-0.6Round 9KOREA-CHINA283N♥J+1+5
-0.8Round 7NINGBOYONGGUAN94♥♦2+2+11
-0.8Round 12INDIA RED253N♥4+2-6
-0.9Round 6MOSCOW292♦♦7+1+0
-1.0Round 7NINGBOYONGGUAN14♥♥2+1+0
-1.0Round 10SHANGHAI YOUTH 342♠♥3-1-5
-1.1Round 6MOSCOW223♣♠5-3-6
-1.2Round 11TRIJET132♥♠5=-1
-1.2Round 13SHANGHAI OCEAN14♠♥Q=+0
-1.3Round 13SHANGHAI OCEAN74♥♣A+1+0
-1.4Round 5BEIJING BEI DI KE172N♠2-1-4
-1.6Round 2SHANGHAI YOUTH 5184♠♥A-1-4
-1.6Round 5BEIJING BEI DI KE204♥♣2+1+0
-1.6Round 10SHANGHAI YOUTH 322N♣6+2-6
-1.9Round 5BEIJING BEI DI KE142♠♣5+1-1
-1.9Round 7NINGBOYONGGUAN74♠♥4-1-6
-2.1Round 6MOSCOW243♦♥10=+0
-2.3Round 5BEIJING BEI DI KE184♠♣A-1-5
-2.3Round 9KOREA-CHINA253N♠3-1-6
-2.3Round 10SHANGHAI YOUTH 383♠♦A=-6
-2.6Round 8THAILAND/CBLT204♠♦J=+0
-2.6Round 12INDIA RED283♠♦K+1-7
-2.9Round 11TRIJET154♠♣A-1+2
-3.1Round 9KOREA-CHINA264♠♠4-1-6
-3.2Round 12INDIA RED263♥♣4=+0
-3.3Round 6MOSCOW253♥♠6=+0
-3.3Round 11TRIJET113♦♥A+2-7
-3.7Round 9KOREA-CHINA213N♦4=-5
-4.1Round 12INDIA RED293♦♦K-2-3
-4.2Round 5BEIJING BEI DI KE193♠♥3=-6
-4.5Round 10SHANGHAI YOUTH 312♦x♥J=-6
-4.5Round 13SHANGHAI OCEAN66♣♥3-1-14
-4.6Round 13SHANGHAI OCEAN44♠♦7+1+0
-4.7Round 7NINGBOYONGGUAN22♠♣A+1-6
-4.9Round 5BEIJING BEI DI KE122♦♣A=-5
-5.1Round 7NINGBOYONGGUAN104♥♣Q-1-6
-5.1Round 11TRIJET141♣♥6+1-15
-5.2Round 2SHANGHAI YOUTH 5133Nx♦10-1-2
-5.2Round 5BEIJING BEI DI KE133N♠2=-5
-5.7Round 5BEIJING BEI DI KE162N♣J-1-6
-6.3Round 12INDIA RED214♥♦6=-8
-6.8Round 13SHANGHAI OCEAN86♦♠J-1-17
-7.4Round 2SHANGHAI YOUTH 5174♥♦6=-12
-9.8Round 8THAILAND/CBLT175♦♥9-2-12
-10.5Round 6MOSCOW264♠♥Q-1-11
-11.2Round 11TRIJET206♣♠9=+2
-12.2Round 8THAILAND/CBLT114♥x♣K=-13
-14.2Round 7NINGBOYONGGUAN55♦x♣K+1-15