BIZON Piotr · POLAND Seniors

106rank
+53.7Butler · 120 bds
+0.45per board
±4.5swing
-0.12vs par /bd · #325/567
+0.39adjusted /bd
Butler per round: -0 -9.8 1.6 -6.6 7.5 35.1 -5 -7.8 1.1 17.5 26.8 -6.7by round

vs par split: bidding -0.47 · play +0.38

Strength of schedule: opponents averaged -0.06/bd (an easy draw) → opponent-adjusted +0.39/bd

Card play — on target: opening leads 79.2% #312 of 567 · declarer play 75.0% #332 of 567 · defence 81.8% #324 of 567

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (9)86.7% (15)
Declarer play100.0% (7)68.0% (25)
Defence75.0% (16)84.6% (39)

Opening leads by suit led: ♠ 66.7% (9) · ♥ 83.3% (6) · ♦ 100.0% (6) · ♣ 66.7% (3)

vs par by strain: NT -1.18 (34) · a suit +0.29 (86)

vs par by level: part-score +0.50 (56) · game -0.40 (58) · slam -3.33 (6)

By role: declaring -0.33/bd (-2.83 vs par · 64) · defending +1.34/bd (+2.96 vs par · 56)

By vulnerability: vulnerable +0.49/bd (+0.46 vs par · 57) · not vulnerable +0.41/bd (-0.65 vs par · 63)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1M.SzymanowskiZ.Yao – D.ZhangOpen10-0.0-0.00-0.60
Round 3M.SzymanowskiA.Riamsree – V.SvangsopakulOpen10-9.8-0.98+0.00
Round 4M.SzymanowskiD.Cui – B.TangOpen10+1.6+0.16+0.30
Round 6M.SzymanowskiX.Huang – X.ZhangOpen10-6.6-0.66+0.60
Round 8M.SzymanowskiX.Fang – J.CaiOpen10+7.5+0.75+0.70
Round 9M.SzymanowskiH.Oh – A.MannoOpen10+35.1+3.51-0.30
Round 10M.SzymanowskiS.Humphries – D.HumphriesOpen10-5.0-0.50-3.10
Round 11M.SzymanowskiM.Cichocki – A.SarniakOpen10-7.8-0.78-0.50
Round 12M.SzymanowskiF.Yu – R.ZhangOpen10+1.1+0.11+0.50
Round 13M.SzymanowskiY.Huang – X.LiOpen10+17.5+1.75-0.20
Round 14M.SzymanowskiF.Du – Y.LiuOpen10+26.8+2.68+4.10
Round 15M.SzymanowskiR.Chan – Z.XuOpen10-6.7-0.67-3.00

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
+14.0Round 14WUHAN122♥x♥K-5+14
+11.9Round 11POLAND Women183♥x♥5-3+12
+9.7Round 9SEOUL MIXED256♥♥5+1+1
+8.4Round 9SEOUL MIXED305♠♦Q=+1
+8.2Round 9SEOUL MIXED223♥x♠K-2+9
+7.9Round 14WUHAN114♥♦7-1+10
+7.8Round 4METALLURGY FED44♥♠J-2+13
+7.7Round 9SEOUL MIXED236♦♥9=-8
+7.6Round 12SHANGHAI GUHUA274♠♥J-3+11
+6.8Round 13CHANG HONG33NT♦2-1+12
+6.8Round 13CHANG HONG54♥♥4-2+0
+6.6Round 11POLAND Women154♠♦6-1+13
+6.5Round 15CANADA CHINA UNITED223NT♠4+1+1
+6.5Round 15CANADA CHINA UNITED263NT♣Q+1+0
+6.0Round 10GINNAN103♠♠J-2+7
+5.9Round 13CHANG HONG43♥x♠K-1+7
+5.7Round 8ONE ESSENTIAL OF RED126♣♦2=-2
+5.2Round 6FUJIAN BOSSSOFT294♠♦J+1+13
+5.2Round 8ONE ESSENTIAL OF RED193NT♠5-2+11
+5.0Round 1CCSA102♥♣10=+6
+4.7Round 12SHANGHAI GUHUA262♦♣A=+6
+4.5Round 13CHANG HONG86♦♠A=+0
+4.5Round 14WUHAN154♠♥4=+11
+4.4Round 6FUJIAN BOSSSOFT233NT♦4-1+6
+4.1Round 3BBC THAILAND232♠x♣A-1+7
+4.0Round 15CANADA CHINA UNITED212♠♥A+1+7
+3.9Round 12SHANGHAI GUHUA226♥♦A=+0
+3.6Round 8ONE ESSENTIAL OF RED203NT♥2-2+7
+3.5Round 3BBC THAILAND253♦♦8=+0
+3.4Round 14WUHAN131NT♠5=+5
+3.3Round 9SEOUL MIXED292♠♦8=+1
+3.1Round 1CCSA84♠♥4-1+10
+3.1Round 10GINNAN73NT♦8=+0
+2.9Round 6FUJIAN BOSSSOFT244♦♠A-1+4
+2.9Round 9SEOUL MIXED283♥♠8-2+5
+2.7Round 10GINNAN24♠♥A=+3
+2.3Round 14WUHAN201NT♦6=+6
+1.9Round 4METALLURGY FED93♥x♠A-1+7
+1.5Round 1CCSA62♥♦6=-7
+1.5Round 10GINNAN91NT♥A=+5
+1.5Round 14WUHAN164♠♥A-1+5
+1.4Round 9SEOUL MIXED263NT♥9+3-12
+1.3Round 4METALLURGY FED25♣x♥K-1+0
+1.2Round 9SEOUL MIXED213♠♦K+1+6
+1.1Round 3BBC THAILAND264♥♠K+2+13
+1.1Round 14WUHAN143♦♦8=+0
+1.0Round 10GINNAN86NT♣6+1-11
+1.0Round 12SHANGHAI GUHUA212♦♥K-1+0
+0.9Round 6FUJIAN BOSSSOFT212♦x♣A=+7
+0.9Round 6FUJIAN BOSSSOFT222♥♦Q+1+0
+0.7Round 1CCSA32NT♠2=-1
+0.6Round 4METALLURGY FED102♣♣8=+0
+0.6Round 6FUJIAN BOSSSOFT302NT♠4+1+6
+0.6Round 8ONE ESSENTIAL OF RED133♦♠K=+1
+0.6Round 13CHANG HONG62♥♠4+2-6
+0.5Round 11POLAND Women143♣♣A+2-1
+0.3Round 3BBC THAILAND245♦♥9=+2
+0.3Round 13CHANG HONG23♠♣7-1-10
+0.1Round 1CCSA42NT♠6+1+0
+0.0Round 8ONE ESSENTIAL OF RED114♠♥A+1+0
-0.0Round 8ONE ESSENTIAL OF RED143NT♦7+2+0
-0.1Round 3BBC THAILAND223NT♣Q-1-5
-0.1Round 9SEOUL MIXED242♥♦A-1-4
-0.1Round 13CHANG HONG93NT♠4+1+1
-0.2Round 13CHANG HONG73NT♥K=+2
-0.2Round 15CANADA CHINA UNITED243NT♠5+2+0
-0.3Round 3BBC THAILAND304♥♦9+1+0
-0.3Round 4METALLURGY FED14♥♠K+1+0
-0.3Round 12SHANGHAI GUHUA232♥♥9+1+0
-0.4Round 4METALLURGY FED54♠♥A+1-1
-0.5Round 1CCSA22♠♥J-1+1
-0.5Round 8ONE ESSENTIAL OF RED153NT♥9+1+0
-0.5Round 10GINNAN34♣♥A=-7
-0.5Round 15CANADA CHINA UNITED253NT♣4+1+0
-0.6Round 1CCSA12NT♦Q+2-6
-0.6Round 4METALLURGY FED34♥♠K+2-11
-0.7Round 14WUHAN193♣♦K-1+0
-0.9Round 4METALLURGY FED62♥♠2-1+0
-1.0Round 12SHANGHAI GUHUA292♠♣7=-1
-1.2Round 1CCSA72NT♠3+1-1
-1.2Round 11POLAND Women114♦♠7=+1
-1.3Round 12SHANGHAI GUHUA284♥♦J+2+11
-1.5Round 10GINNAN52♠♦3-1-5
-1.5Round 11POLAND Women172♠♣8+1+6
-1.7Round 8ONE ESSENTIAL OF RED185♦♣6=+2
-1.7Round 10GINNAN11NT♦6=-5
-1.8Round 4METALLURGY FED81NT♣5=+1
-1.8Round 15CANADA CHINA UNITED232♥♥5+1-1
-1.9Round 8ONE ESSENTIAL OF RED175♦♥2-2-5
-2.0Round 6FUJIAN BOSSSOFT275♠♥A-1-8
-2.2Round 13CHANG HONG12♥♦Q+2-6
-2.3Round 11POLAND Women202♥♦6-2-3
-2.3Round 12SHANGHAI GUHUA242NT♥J-2-8
-2.5Round 15CANADA CHINA UNITED283NT♥J+3-11
-2.7Round 3BBC THAILAND214♥♠6=+1
-2.7Round 14WUHAN183NT♠9+1-4
-2.8Round 3BBC THAILAND284♥♠2+1+0
-2.8Round 15CANADA CHINA UNITED305♣♠4-1-5
-3.2Round 1CCSA92♣♥Q-2-7
-3.3Round 12SHANGHAI GUHUA302♣♦K-3+0
-3.5Round 8ONE ESSENTIAL OF RED163NT♥9-2-7
-3.7Round 10GINNAN44♦♠A-1-6
-4.1Round 6FUJIAN BOSSSOFT283NT♦4-1-6
-4.5Round 14WUHAN172♠♣6+3-6
-4.6Round 11POLAND Women133NT♠2=-10
-4.7Round 11POLAND Women122♥♦J+2-6
-4.9Round 1CCSA54♠♣10+1-1
-4.9Round 6FUJIAN BOSSSOFT263NT♣5-1-6
-4.9Round 13CHANG HONG103♠♣3-2-2
-5.2Round 3BBC THAILAND294♠♥J=-10
-5.2Round 11POLAND Women193♣♥K+1-10
-6.0Round 4METALLURGY FED74♠♣K-1-6
-7.3Round 11POLAND Women164♥♦A=-7
-7.6Round 9SEOUL MIXED274♥x♠2-3-2
-7.7Round 3BBC THAILAND274♥♣7-1-8
-7.9Round 12SHANGHAI GUHUA254♥♣10+2-14
-7.9Round 15CANADA CHINA UNITED295♥x♠K-1-12
-8.0Round 15CANADA CHINA UNITED275♥x♠K-2-9
-10.5Round 6FUJIAN BOSSSOFT253NT♠3=-10
-11.9Round 10GINNAN65♦x♣A-4-12