JIANG Renfu · CHANG HONG

639rank
-85.8Butler · 70 bds
-1.23per board
±3.9swing
-2.01vs par /bd · #567/567
-1.16adjusted /bd
Butler per round: -3 -7.7 -6.9 -4.4 -20.7 -21.8 -21.3by round

vs par split: bidding -1.07 · play -1.01

Strength of schedule: opponents averaged +0.06/bd (a tough draw) → opponent-adjusted -1.16/bd

Card play — on target: opening leads 88.2% #73 of 567 · declarer play 68.8% #461 of 567 · defence 63.6% #566 of 567

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (6)100.0% (11)
Declarer play100.0% (3)61.5% (13)
Defence70.0% (10)60.9% (23)

Opening leads by suit led: ♠ 100.0% (3) · ♥ 100.0% (2) · ♦ 85.7% (7) · ♣ 80.0% (5)

vs par by strain: NT -0.57 (21) · a suit -2.75 (48)

vs par by level: part-score -0.62 (40) · game -2.84 (25) · slam -12.00 (4)

By role: declaring -1.46/bd (-4.05 vs par · 37) · defending -0.96/bd (+0.27 vs par · 33)

By vulnerability: vulnerable -0.71/bd (-1.46 vs par · 35) · not vulnerable -1.74/bd (-2.57 vs par · 35)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2Y.HuangF.Ye – X.WuClosed10-3.0-0.30-1.50
Round 4Y.HuangH.Fung – B.LuiOpen10-7.7-0.77-0.60
Round 5Y.HuangK.Sung – I.HwangClosed10-6.9-0.69-1.60
Round 7Y.HuangT.Ma – X.ZhengOpen10-4.4-0.44+2.10
Round 9Y.HuangK.Dwyer – S.HuangOpen10-20.7-2.07-5.40
Round 10Y.HuangL.Feng – X.WuClosed10-21.8-2.18-4.80
Round 12Y.HuangY.Hu – H.ZhangOpen10-21.3-2.13-2.30

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
+8.9Round 2ZHEJIANG JINJIANG193NT♠4-3+9
+8.9Round 5GALAGILE134♠♣Q-2+13
+7.4Round 2ZHEJIANG JINJIANG203NT♥4+1+4
+4.4Round 2ZHEJIANG JINJIANG131NT♠10-1+5
+4.0Round 7YUNNAN45♦♣9+2+4
+3.9Round 10WUHU BRIDGE TEAM73NT♦8+1+1
+3.6Round 4KONG HAN42♥♠J=+11
+2.5Round 7YUNNAN22♠♣A-2+0
+2.3Round 7YUNNAN91NT♦8+5+15
+2.1Round 5GALAGILE141NT♠K+1+6
+2.0Round 4KONG HAN62♥♠7-2+3
+1.7Round 4KONG HAN82NT♣5-1+4
+1.7Round 12HONG PRAISE TEAM256♦♣10+1-11
+1.6Round 4KONG HAN101NT♠3+1+1
+1.6Round 9MILLENS292♠♦9+2-1
+1.2Round 7YUNNAN31NT♥7+1+0
+1.0Round 10WUHU BRIDGE TEAM86NT♦7+1-11
+1.0Round 12HONG PRAISE TEAM211NT♥10-1+0
+0.8Round 5GALAGILE112♠♣8=+1
+0.6Round 2ZHEJIANG JINJIANG143♦♥2=+5
+0.6Round 7YUNNAN85♣♦Q+1+11
+0.5Round 9MILLENS263NT♥3+2-12
+0.4Round 7YUNNAN72♦♦4=+1
+0.2Round 10WUHU BRIDGE TEAM33♣♦10+2-6
+0.1Round 4KONG HAN72♠♣K+2+1
+0.1Round 9MILLENS274♥♠2-3+7
-0.0Round 5GALAGILE121NT♠J-1-2
-0.0Round 12HONG PRAISE TEAM292♠♣8+1+0
-0.1Round 5GALAGILE163♣♠Q=-7
-0.1Round 9MILLENS243♥♠5-1-4
-0.2Round 7YUNNAN13♥♣9-1+2
-0.4Round 4KONG HAN54♠♥A+1-1
-0.4Round 5GALAGILE202♠♦10+1+0
-0.6Round 4KONG HAN34♥♠K+2-11
-0.7Round 9MILLENS254♥♠4+3-10
-0.7Round 12HONG PRAISE TEAM262♥♣3+1+0
-0.7Round 12HONG PRAISE TEAM283NT♣4+2+11
-0.9Round 12HONG PRAISE TEAM303♦♣K-1+3
-1.2Round 12HONG PRAISE TEAM232♥♥5+2-1
-1.4Round 10WUHU BRIDGE TEAM9Pass+3
-1.5Round 10WUHU BRIDGE TEAM52♠♦3-1-5
-1.6Round 2ZHEJIANG JINJIANG162NT♣7+2+2
-1.7Round 10WUHU BRIDGE TEAM11NT♦10=-5
-2.2Round 4KONG HAN14♠x♦A-3-2
-2.3Round 10WUHU BRIDGE TEAM102♠♦4+1-1
-2.4Round 5GALAGILE152♥♠A+1-6
-2.8Round 2ZHEJIANG JINJIANG182♥♣5=-1
-3.1Round 7YUNNAN104♦♠Q=+0
-3.5Round 12HONG PRAISE TEAM242NT♥J-1-9
-3.7Round 2ZHEJIANG JINJIANG124♠♥Q-1-12
-3.7Round 9MILLENS283♥♦4=-2
-3.7Round 10WUHU BRIDGE TEAM42♠♣4=-6
-3.8Round 9MILLENS235♦♥6+2-14
-4.1Round 2ZHEJIANG JINJIANG154♥♦7+1-6
-4.2Round 9MILLENS214♥♠J=+0
-4.3Round 5GALAGILE182NT♦9-2-8
-4.5Round 7YUNNAN63♥♦4-2-5
-4.8Round 9MILLENS223NT♣9-2-6
-5.0Round 5GALAGILE193♠♦4-2-6
-5.4Round 2ZHEJIANG JINJIANG174♠x♥A-1-11
-5.5Round 12HONG PRAISE TEAM274♠♦6+2-2
-5.6Round 9MILLENS306♠♦4-4-12
-6.1Round 4KONG HAN92♥♥2-3-2
-6.5Round 5GALAGILE174♠♣4-3-7
-6.7Round 2ZHEJIANG JINJIANG114♠♦A-1-10
-6.8Round 10WUHU BRIDGE TEAM23♠♥A+1-8
-7.4Round 4KONG HAN25♥x♦A=-10
-7.6Round 7YUNNAN53NT♠Q+1-7
-9.5Round 10WUHU BRIDGE TEAM63NT♣4=-10
-11.5Round 12HONG PRAISE TEAM226♣♦J-1-14