ZHANG Yukun · AMANDA

156rank
-23.6Butler · 98 bds
-0.24per board
±4.2swing
-0.49vs par /bd · #154/196
-0.55adjusted /bd
Butler per round: -6.1 -19.5 -13.7 7.8 -3.7 -9.1 20.7by round

vs par split: bidding -0.73 · play +0.24

Strength of schedule: opponents averaged -0.31/bd (an easy draw) → opponent-adjusted -0.55/bd

Card play — on target: opening leads 63.6% #186 of 196 · declarer play 85.7% #34 of 196 · defence 73.9% #182 of 196

Bidding activity — not a pass: 48.7% #38 of 196 (134/275)

Card play by contract type — on target
vs NTvs a suit
Opening leads33.3% (3)68.4% (19)
Declarer play80.0% (5)87.5% (16)
Defence60.0% (10)77.8% (36)

Opening leads by suit led: ♠ 42.9% (7) · ♥ 60.0% (5) · ♦ 71.4% (7) · ♣ 100.0% (3)

vs par by strain: NT -1.76 (25) · a suit -0.06 (73)

vs par by level: part-score +1.98 (41) · game -3.00 (48) · slam +1.67 (9)

By role: declaring +0.66/bd (-1.52 vs par · 52) · defending -1.26/bd (+0.67 vs par · 46)

By vulnerability: vulnerable -0.68/bd (-0.47 vs par · 49) · not vulnerable +0.20/bd (-0.51 vs par · 49)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.FongA.Gandoglia – M.Di FrancoOpen14-6.1-0.44-0.86
Round 2K.FongJ.Stefanov – Z.ZaharievClosed14-19.5-1.39-0.79
Round 3K.FongH.Erichsen – F.BrownClosed14-13.7-0.98-1.21
Round 4K.FongO.Bahnik – J.SlemrClosed14+7.8+0.56-0.29
Round 6K.FongP.Ling – M.ChuOpen14-3.7-0.26+0.43
Round 7K.FongJ.Liu – M.ShengOpen14-9.1-0.65-0.79
Round 8K.FongD.Neumann – M.Van Der VlugtOpen14+20.7+1.48+0.07

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
+12.4Round 6HONG KONG LADIES232♦♣7-2+13
+9.6Round 6HONG KONG LADIES203♥♠K+1+13
+9.1Round 4CZECHOSLOVAKIA V2256♠♦2-1+17
+7.8Round 8POST PANDA283NT♦6=+7
+6.8Round 4CZECHOSLOVAKIA V2193NT♠2=-1
+6.3Round 8POST PANDA242♥♣A+2+7
+6.2Round 3SWIMMING DRAGONS92♠♣Q+1+6
+5.7Round 4CZECHOSLOVAKIA V2183♠♦A-1+5
+5.0Round 7ZHAO45♣♥A=+0
+4.6Round 1SCHONFELD FINESSE23♦♥T=+0
+4.2Round 4CZECHOSLOVAKIA V2163♥♦7=+6
+4.2Round 8POST PANDA156♥♠4=+0
+4.1Round 2JULS283NT♠T+2+6
+4.1Round 4CZECHOSLOVAKIA V2152♠♥T=+0
+4.0Round 6HONG KONG LADIES183NT♣9+1+1
+4.0Round 8POST PANDA184♦x♦K-3+13
+3.3Round 1SCHONFELD FINESSE145♥x♦Q-2+4
+3.3Round 2JULS173♦♥K=+0
+3.1Round 1SCHONFELD FINESSE102♠♠3-1+5
+2.9Round 1SCHONFELD FINESSE71NT♠2+1+0
+2.6Round 8POST PANDA217♥♥T=+0
+2.5Round 3SWIMMING DRAGONS82NT♠T-3+2
+2.3Round 7ZHAO34♥♥3=+0
+2.3Round 8POST PANDA196♦♣A=-1
+2.1Round 8POST PANDA264♥♣7=+0
+1.6Round 3SWIMMING DRAGONS24♠♥2-2+6
+1.6Round 4CZECHOSLOVAKIA V2173♣♦A+2+2
+1.5Round 3SWIMMING DRAGONS63NT♠K=-1
+1.2Round 2JULS165♠x♥K-1+6
+1.2Round 3SWIMMING DRAGONS113♠♥A-1+4
+1.2Round 7ZHAO13NT♠K-2+0
+1.2Round 7ZHAO94♠♥4=+0
+1.1Round 7ZHAO102♦♥A+1+1
+1.1Round 8POST PANDA202♥♣8=+0
+1.0Round 6HONG KONG LADIES162♠♣9-1+2
+1.0Round 8POST PANDA232♥♦J=+1
+0.9Round 4CZECHOSLOVAKIA V2244♥♦J+1+0
+0.8Round 1SCHONFELD FINESSE13NT♣2-1+4
+0.7Round 8POST PANDA221NT♥A+1+0
+0.6Round 1SCHONFELD FINESSE33NT♥Q+1+0
+0.6Round 1SCHONFELD FINESSE92NT♣4+1+1
+0.6Round 3SWIMMING DRAGONS43♣♥K=+0
+0.6Round 3SWIMMING DRAGONS144♠♣2=+1
+0.5Round 7ZHAO73NT♦4+1+0
+0.5Round 7ZHAO124♠♦T=+0
+0.3Round 4CZECHOSLOVAKIA V2211NT♠4-1+7
+0.3Round 4CZECHOSLOVAKIA V2236♠♦A=+0
+0.2Round 2JULS183NT♠8+3-10
+0.2Round 2JULS272♠♦8-1-4
-0.0Round 8POST PANDA274♥♣3+2-11
-0.1Round 2JULS233♥♦K-1-1
-0.2Round 3SWIMMING DRAGONS32♥♣Q+2+2
-0.2Round 6HONG KONG LADIES174♠♦K=+1
-0.3Round 2JULS244♠♦2+1+0
-0.3Round 7ZHAO144♠♦K+2-11
-0.5Round 8POST PANDA163NT♦4+1+0
-0.6Round 3SWIMMING DRAGONS12♥♦Q+1+0
-0.7Round 1SCHONFELD FINESSE82NT♠A=+0
-0.8Round 6HONG KONG LADIES274♦♠T=+0
-0.9Round 2JULS201NT♣5-2+7
-0.9Round 4CZECHOSLOVAKIA V2263♠♠6=-8
-0.9Round 4CZECHOSLOVAKIA V2283♠♠2=+0
-1.0Round 7ZHAO55♦♥3=+0
-1.2Round 1SCHONFELD FINESSE64♠♣A-2-5
-1.2Round 6HONG KONG LADIES212♠♥A+3+5
-1.3Round 7ZHAO114♠♦K-1-4
-1.8Round 6HONG KONG LADIES242♠♠5+2+6
-2.0Round 2JULS223NT♥2=-7
-2.3Round 6HONG KONG LADIES154♠x♠3-1-1
-2.4Round 3SWIMMING DRAGONS132♦x♠J-2-4
-2.5Round 2JULS214♣♥K=+0
-2.6Round 1SCHONFELD FINESSE53♦♥Q+1+0
-2.8Round 1SCHONFELD FINESSE44♠♥K+2-2
-2.8Round 6HONG KONG LADIES252♠♦K-1-5
-2.8Round 7ZHAO26♥♠6+1+11
-3.0Round 3SWIMMING DRAGONS54♥♠A=+0
-3.1Round 3SWIMMING DRAGONS74♠♣5-1-15
-3.2Round 1SCHONFELD FINESSE122♠♥4+2-1
-3.5Round 6HONG KONG LADIES284♠♠9-1-12
-3.6Round 6HONG KONG LADIES193NT♦K-2-6
-3.6Round 7ZHAO85♦x♣J-1-5
-4.2Round 2JULS195♦♥T=+2
-4.6Round 8POST PANDA251♦♣6+3-1
-4.9Round 2JULS263NT♠Q+1-11
-5.6Round 1SCHONFELD FINESSE115♣x♦A-2-5
-5.6Round 2JULS256♠x♦Q-4+0
-5.9Round 1SCHONFELD FINESSE134♠♥A-2-13
-5.9Round 6HONG KONG LADIES264♠♥5=+0
-5.9Round 7ZHAO134♥♣J=+0
-6.0Round 7ZHAO63♥♦4-4-3
-6.3Round 8POST PANDA174♠♦T+3-14
-6.7Round 4CZECHOSLOVAKIA V2273NT♠4+2-10
-7.4Round 4CZECHOSLOVAKIA V2226NTx♣7-1-11
-7.6Round 3SWIMMING DRAGONS126♥♠K+1-1
-8.0Round 2JULS155♣♦T=+1
-8.6Round 6HONG KONG LADIES223NT♠7+2-11
-9.3Round 4CZECHOSLOVAKIA V2203NT♠6+1-11
-11.0Round 3SWIMMING DRAGONS104♠♣K+3-17