CHEN Zhongsheng · XIAMEN

252rank
+22.4Butler · 120 bds
+0.19per board
±4.2swing
-0.09vs par /bd · #375/672
+0.15adjusted /bd
Butler per round: 11.2 -21.4 -25.5 1.9 20.6 -24.9 1.6 25.1 35 3.4 3.5 -8.1by round

vs par split: bidding +0.37 · play -0.53

Strength of schedule: opponents averaged -0.04/bd (an average draw) → opponent-adjusted +0.15/bd

Card play — on target: opening leads 85.7% #213 of 671 · declarer play 68.4% #538 of 671 · defence 80.0% #507 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·85.7% (21)
Declarer play·68.4% (19)
Defence·80.0% (40)

Opening leads by suit led: ♠ 75.0% (4) · ♥ 100.0% (3) · ♦ 100.0% (5) · ♣ 77.8% (9)

vs par by strain: a suit -0.16 (75)

vs par by level: part-score -2.00 (32) · game +0.93 (40) · slam +5.00 (3)

By role: declaring -0.00/bd (-2.50 vs par · 56) · defending +0.35/bd (+2.02 vs par · 64)

By vulnerability: vulnerable +0.13/bd (-0.43 vs par · 68) · not vulnerable +0.26/bd (+0.35 vs par · 52)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1W.TuL.Du – Z.YuOpen10+11.2+1.12+2.50
Round 2W.TuP.Tuszynski – A.KowalskiOpen10-21.4-2.14-5.80
Round 3Z.ChenY.Gong – W.ZhangOpen10-25.5-2.55-1.10
Round 4Z.ChenE.Wold – M.PassellClosed10+1.9+0.19-0.10
Round 5W.TuZ.Zhang – J.BaiOpen10+20.6+2.06+2.50
Round 6W.TuJ.Li – J.HuOpen10-24.9-2.49-3.70
Round 7W.TuJ.Goenka – S.IyengarClosed10+1.6+0.16-1.00
Round 8H.ChenN.Chen – Y.JingClosed10+25.1+2.51+2.20
Round 9H.ChenM.Cornell – V.CornellClosed10+35.0+3.50+4.00
Round 10H.ChenX.Liu – Z.LiOpen10+3.4+0.34-1.10
Round 11W.TuM.Cao – R.RongClosed10+3.5+0.35+0.20
Round 12W.TuN.Sver – M.PilipovicOpen10-8.1-0.81+0.30

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
+10.6Round 9STERN264♠♣6=+10
+9.7Round 5XINJIANG157N♠J-1+14
+9.7Round 8BEIJING ZHU YE204♠♣A-1+12
+9.0Round 9STERN253N♦2=+10
+8.5Round 9STERN213N♦J-1+11
+7.5Round 1SUZHOU TAIHU36♣♦A-1+13
+7.4Round 4O'ROURKE44♠♣Q=+0
+7.1Round 9STERN224♠♦6=+5
+6.8Round 1SUZHOU TAIHU44♥x♠8-1+8
+6.8Round 11ZHANG166♠♣9-1+13
+6.7Round 4O'ROURKE64♠♣10-1+13
+6.4Round 1SUZHOU TAIHU14♥♣3+1+0
+6.0Round 8BEIJING ZHU YE153N♣6-2+8
+6.0Round 10HAI LV TEAM42Nx♦Q-1+3
+5.8Round 7INDIA RED54♠♦Q+1+6
+5.7Round 5XINJIANG133N♠2+1+5
+4.8Round 10HAI LV TEAM72♦♠K=+11
+4.8Round 12SVER243N♠10-2-1
+4.6Round 8BEIJING ZHU YE113N♦6+1+4
+4.2Round 5XINJIANG192♠♥3+1+6
+3.6Round 12SVER225♣♥A-1+5
+3.4Round 1SUZHOU TAIHU24♠x♣7-3+5
+3.3Round 1SUZHOU TAIHU83N♣7-1+4
+3.1Round 10HAI LV TEAM94♠x♥K-3+5
+3.0Round 11ZHANG183N♠3-2+5
+2.9Round 11ZHANG154♠♣A-1-2
+2.7Round 3YUNNAN DIKUANG273N♠4-1+5
+2.7Round 8BEIJING ZHU YE192♣♠3-2+0
+2.6Round 8BEIJING ZHU YE121♠♦7+2+0
+2.6Round 10HAI LV TEAM83♣♥Q-1-1
+2.6Round 12SVER283♠♦K+1+7
+2.3Round 3YUNNAN DIKUANG234♠♥9+1+0
+2.3Round 5XINJIANG184♠♣3-1+5
+2.3Round 9STERN232♦♠A-2+2
+2.2Round 3YUNNAN DIKUANG293N♠4+2+0
+2.2Round 4O'ROURKE15♣♥K-2+5
+2.1Round 6JIANGSU303N♥8-2+6
+1.9Round 9STERN293N♣6-2+3
+1.8Round 1SUZHOU TAIHU54♠♦A-1+5
+1.8Round 7INDIA RED21N♦9+1+0
+1.7Round 1SUZHOU TAIHU62N♣5=+1
+1.7Round 2ROSSARSKI155♥♦K=+0
+1.5Round 8BEIJING ZHU YE173N♥7+1-5
+1.4Round 5XINJIANG171N♠2-1+4
+1.2Round 11ZHANG132♥♣3=+1
+1.0Round 8BEIJING ZHU YE143♠♥8-2+0
+0.9Round 8BEIJING ZHU YE134♠♥K+2+7
+0.9Round 9STERN244♥♦2=-5
+0.8Round 5XINJIANG161N♠5-2+1
+0.8Round 7INDIA RED44♥♦7+1+0
+0.7Round 7INDIA RED101N♥9+2+0
+0.6Round 5XINJIANG204♠♣K=-1
+0.5Round 12SVER233N♠K-1+6
+0.4Round 6JIANGSU232♥♦4+1+0
+0.2Round 2ROSSARSKI203N♠4+3-13
+0.0Round 6JIANGSU283N♥4+2+0
-0.0Round 7INDIA RED31N♣A-2-9
-0.1Round 7INDIA RED64♥♣J=-1
-0.1Round 8BEIJING ZHU YE162N♣A-1+1
-0.1Round 11ZHANG203N♠5+3-13
-0.2Round 6JIANGSU274♥♦K-1-5
-0.4Round 9STERN285♦♠A+1+5
-0.5Round 10HAI LV TEAM64♠♣A=+0
-0.6Round 4O'ROURKE71N♥2+1+1
-0.7Round 5XINJIANG143♣♠Q-1-2
-0.8Round 4O'ROURKE10Pass-3
-0.8Round 10HAI LV TEAM31N♥Q-2-1
-0.9Round 4O'ROURKE23N♣2+2-1
-1.0Round 3YUNNAN DIKUANG252♠♦5-1-1
-1.0Round 10HAI LV TEAM102♠♣5+1-1
-1.1Round 6JIANGSU264♠♥Q=-5
-1.2Round 5XINJIANG113♥♣9-2-5
-1.2Round 10HAI LV TEAM54♠♥4+1-11
-1.2Round 11ZHANG194♠♣J+1-1
-1.2Round 12SVER253N♣4=+5
-1.3Round 4O'ROURKE92♥♣8-1-4
-1.3Round 11ZHANG174♥♣K-1-4
-1.3Round 12SVER301N♠3-1-5
-1.4Round 1SUZHOU TAIHU93N♥10+2+0
-1.4Round 2ROSSARSKI173♣♠J+2-8
-1.5Round 2ROSSARSKI193♦♥6+2-1
-1.5Round 9STERN303♠♣K=+0
-1.6Round 2ROSSARSKI183♠♠10-1-4
-1.6Round 11ZHANG122♠♣8+1-10
-1.7Round 3YUNNAN DIKUANG223N♥5+2+4
-1.8Round 6JIANGSU241N♥7-1-5
-1.8Round 7INDIA RED85♦x♠2-1-9
-1.8Round 7INDIA RED94♥♠8+3+10
-1.9Round 2ROSSARSKI143N♣2+4-17
-1.9Round 7INDIA RED14♠♠5+2-1
-1.9Round 7INDIA RED74♠♥3-1-6
-2.0Round 11ZHANG145♦♥K=+14
-2.1Round 2ROSSARSKI161N♣10+1+0
-2.2Round 5XINJIANG123♦x♣K-1-2
-2.4Round 10HAI LV TEAM11N♦A-2-5
-2.8Round 2ROSSARSKI113N♥4-1-5
-2.8Round 4O'ROURKE52♠♦4-1-5
-3.1Round 12SVER274♥♣7+1+5
-3.3Round 3YUNNAN DIKUANG303N♥7=+6
-3.3Round 4O'ROURKE33N♥9+3-1
-3.4Round 9STERN272♠♦9+2-1
-3.8Round 2ROSSARSKI132♠♣5+1+0
-3.8Round 8BEIJING ZHU YE182♠♥Q-2-5
-4.1Round 6JIANGSU293♠♥J-3-5
-4.2Round 11ZHANG113N♥2+2-1
-4.3Round 12SVER262♣x♦4=-8
-4.4Round 12SVER293♠♥Q=-6
-4.5Round 3YUNNAN DIKUANG263♠♦Q+1-4
-4.7Round 4O'ROURKE83♦♣Q=-6
-4.8Round 6JIANGSU223♠♠2-1+0
-5.3Round 6JIANGSU216♥♣A-1-11
-5.3Round 12SVER213N♣4-2-5
-5.9Round 1SUZHOU TAIHU74♥♠J=+1
-6.2Round 3YUNNAN DIKUANG243N♣9=-6
-6.3Round 3YUNNAN DIKUANG284♥♦7=-5
-7.2Round 10HAI LV TEAM24♠♦7-2-11
-8.2Round 2ROSSARSKI124♥x♣2-2-10
-9.7Round 3YUNNAN DIKUANG213N♣9=-10
-10.1Round 6JIANGSU253♦x♥A=-12
-12.4Round 1SUZHOU TAIHU104♥♠4-1-12