CHEN Ji · P D TIMES

280rank
-14.0Butler · 21 bds
-0.67per board
±4.9swing
+1.19vs par /bd
-0.81adjusted /bd
Butler per round: 14.1 -19.8 -8.3by round

vs par split: bidding +1.52 · play -0.33

Strength of schedule: opponents averaged -0.15/bd (an easy draw) → opponent-adjusted -0.81/bd

Card play — on target: opening leads 100.0% · declarer play 40.0% · defence 90.0%

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (1)100.0% (1)
Declarer play50.0% (2)33.3% (3)
Defence80.0% (5)100.0% (5)

Opening leads by suit led: ♠ 100.0% (1) · ♣ 100.0% (1)

vs par by strain: NT +0.75 (12) · a suit +1.78 (9)

vs par by level: part-score +0.10 (10) · game +1.10 (10) · slam +13.00 (1)

By role: declaring +0.94/bd (+0.00 vs par · 11) · defending -2.43/bd (+2.50 vs par · 10)

By vulnerability: vulnerable -0.81/bd (+0.40 vs par · 10) · not vulnerable -0.54/bd (+1.91 vs par · 11)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1P.HuangX.Zhang – L.ZhangOpen7+14.1+2.01+1.86
Round 2P.HuangT.Grude – K.HeggeOpen7-19.8-2.83+1.14
Round 4P.HuangC.Bosenberg – N.EberOpen7-8.3-1.19+0.57

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
+10.9Round 1SHAANXI ELECTRIC POWER DESIGN33NT♠5=+10
+8.3Round 4SOUTH AFRICA283NTx♠3=+6
+4.8Round 1SHAANXI ELECTRIC POWER DESIGN41NT♥4=+12
+2.4Round 1SHAANXI ELECTRIC POWER DESIGN13NT♦10=-1
+1.7Round 1SHAANXI ELECTRIC POWER DESIGN23♥♣J+1+10
+1.6Round 2NORWAY JUNIORS143NT♣2-1+4
+1.0Round 1SHAANXI ELECTRIC POWER DESIGN53♥♠K=+0
+0.5Round 4SOUTH AFRICA261NT♠7=-1
+0.1Round 4SOUTH AFRICA253NT♠Q=+0
-0.2Round 2NORWAY JUNIORS92♠♥4=-1
-0.8Round 4SOUTH AFRICA274♠♦4+2+11
-0.9Round 2NORWAY JUNIORS81NT♠2+1+0
-1.2Round 2NORWAY JUNIORS112♠♦2+1-1
-1.7Round 1SHAANXI ELECTRIC POWER DESIGN61NT♥5+1-10
-2.0Round 2NORWAY JUNIORS123NTx♥7-1+0
-2.1Round 4SOUTH AFRICA241NT♥4+1-1
-5.0Round 1SHAANXI ELECTRIC POWER DESIGN74♠x♣8-1-8
-5.7Round 4SOUTH AFRICA224♥♦3=-1
-8.4Round 2NORWAY JUNIORS136♠♣3+1+13
-8.6Round 4SOUTH AFRICA233NT♠3+1-10
-8.7Round 2NORWAY JUNIORS103♠x♣A-3-7