🇵🇱 KOWALCZYK Stefan · POLAND

18rank
+88.4Butler · 176 bds
+0.50per board
±4.2swing
+0.82vs par /bd · #11/111
+0.43adjusted /bd
Butler per round: -44.5 22.1 6.3 -5.8 3.8 37.3 -14.9 -5.2 48.1 12.8 28.4by round

vs par split: bidding +0.05 · play +0.80

Strength of schedule: opponents averaged -0.07/bd (an easy draw) → opponent-adjusted +0.43/bd

Card play — on target: opening leads 73.1% #94 of 110 · declarer play 89.2% #2 of 111 · defence 85.9% #52 of 111

Card play by contract type — on target
vs NTvs a suit
Opening leads73.9% (23)72.4% (29)
Declarer play81.8% (11)92.3% (26)
Defence86.1% (36)85.7% (63)

Opening leads by suit led: ♠ 83.3% (12) · ♥ 80.0% (15) · ♦ 63.6% (11) · ♣ 64.3% (14)

vs par by strain: NT +2.48 (52) · a suit +0.10 (123)

vs par by level: part-score +0.19 (62) · game +1.15 (109) · slam +1.00 (4)

By role: declaring +1.17/bd (-1.68 vs par · 75) · defending -0.03/bd (+2.67 vs par · 100)

By vulnerability: vulnerable +0.57/bd (+0.46 vs par · 88) · not vulnerable +0.43/bd (+1.18 vs par · 88)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2J.SucharkiewiczA.Kaplan – B.BollackClosed16-44.5-2.78-0.62
Round 4J.SucharkiewiczA.Schwartz – R.SheinmanClosed16+22.1+1.38+3.00
Round 5J.SucharkiewiczO.Ekinci – E.KorkutClosed16+6.3+0.39-3.69
Round 8J.SucharkiewiczJ.Bamberger – C.FeldererClosed16-5.8-0.36-1.88
Round 10J.SucharkiewiczJ.Matheson – W.CoyleOpen16+3.8+0.24+1.00
Round 12J.SucharkiewiczM.Kanerva – S.NiemiClosed16+37.3+2.33+3.25
Round 13J.SucharkiewiczC.Mariani – E.FornaciariOpen16-14.9-0.93+0.50
Round 14J.SucharkiewiczP.Grenthe – P.VanhoutteClosed16-5.2-0.33+1.06
Round 16J.SucharkiewiczP.Montel – J.FreiClosed16+48.1+3.01+5.31
Round 18J.SucharkiewiczA.Cabot – J.FrutosClosed16+12.8+0.80-0.75
Round 19J.SucharkiewiczP.Leis – K.PedakOpen16+28.4+1.77+1.81

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
+11.3Round 12🇫🇮 FINLAND113♠x♣3-4+9
+11.0Round 19🇪🇪 ESTONIA157NT♥3-2+17
+10.7Round 16🇨🇭 SWITZERLAND24♥♠Q-1+12
+9.8Round 16🇨🇭 SWITZERLAND103♠♥K=+15
+9.2Round 5🇹🇷 TURKEY95♦♣10-1+12
+9.0Round 12🇫🇮 FINLAND153NT♦4-1+14
+8.7Round 19🇪🇪 ESTONIA84♠♥K=+11
+8.5Round 4🇮🇱 ISRAEL123NT♦3=+11
+8.0Round 18🇪🇸 SPAIN65♥♦K-1+10
+7.6Round 19🇪🇪 ESTONIA103NT♥8-2+8
+7.5Round 8🇦🇹 AUSTRIA94♥♣Q=-1
+7.2Round 16🇨🇭 SWITZERLAND114♥♣4=+7
+7.0Round 4🇮🇱 ISRAEL34♥♣J-3+12
+6.6Round 8🇦🇹 AUSTRIA35♦♥9=+0
+6.6Round 12🇫🇮 FINLAND84♠x♥K-1+8
+6.3Round 4🇮🇱 ISRAEL104♥♦2-1+12
+5.8Round 16🇨🇭 SWITZERLAND124♥x♣Q=+10
+5.7Round 18🇪🇸 SPAIN136♥♠4+1-13
+5.6Round 8🇦🇹 AUSTRIA152NT♦6-2+8
+5.5Round 12🇫🇮 FINLAND143♣♥4+2+13
+5.4Round 8🇦🇹 AUSTRIA25♠x♣K+2+2
+5.3Round 5🇹🇷 TURKEY132NT♠9=+0
+5.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND121♥♠10+2+2
+4.8Round 14🇫🇷 FRANCE162♠♥10-2-1
+4.8Round 18🇪🇸 SPAIN165♣♦K=+0
+4.7Round 19🇪🇪 ESTONIA53♥♦5-4+0
+4.3Round 4🇮🇱 ISRAEL153NT♠3-3+9
+4.3Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND134♥♣J+1+0
+4.3Round 12🇫🇮 FINLAND64♠♣A-1+10
+4.3Round 16🇨🇭 SWITZERLAND73NT♠9-1+6
+4.1Round 14🇫🇷 FRANCE54♠x♣A=+5
+3.9Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND94♥♣K+1-10
+3.8Round 12🇫🇮 FINLAND104♥♣8=+0
+3.8Round 13🇮🇹 ITALY14♥♣J-1-2
+3.8Round 13🇮🇹 ITALY54♠♣Q-1+6
+3.7Round 16🇨🇭 SWITZERLAND132♠♠8+1+0
+3.5Round 14🇫🇷 FRANCE113NT♦4+2+8
+3.5Round 19🇪🇪 ESTONIA113NT♠6+2+1
+3.3Round 12🇫🇮 FINLAND13♥♥8=+7
+3.3Round 16🇨🇭 SWITZERLAND5Adj.♣3+3
+3.3Round 19🇪🇪 ESTONIA93♠♦10-1+5
+3.1Round 16🇨🇭 SWITZERLAND164♥x♥A-1+6
+3.0Round 18🇪🇸 SPAIN31NT♠J=-1
+2.9Round 19🇪🇪 ESTONIA73NT♠Q-2+13
+2.7Round 2🇧🇪 BELGIUM133NT♣7+2+13
+2.7Round 4🇮🇱 ISRAEL13NT♠Q-1+4
+2.6Round 4🇮🇱 ISRAEL64♥♦2-1-5
+2.4Round 2🇧🇪 BELGIUM63♠♣K-1+4
+2.4Round 5🇹🇷 TURKEY33NT♥K-1+10
+2.3Round 4🇮🇱 ISRAEL113♥♦4-1+4
+2.3Round 12🇫🇮 FINLAND135♥x♠A-2-4
+2.2Round 5🇹🇷 TURKEY144♠♣3=+0
+2.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND154♥♦6=+11
+2.2Round 18🇪🇸 SPAIN83NT♠7-1+5
+2.1Round 2🇧🇪 BELGIUM164♠♣2-1+5
+2.1Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND84♠♥A-1+5
+2.0Round 4🇮🇱 ISRAEL144♠♣K-1+4
+2.0Round 12🇫🇮 FINLAND123♣♠A+1+9
+1.9Round 5🇹🇷 TURKEY161♠♣10+1+0
+1.9Round 18🇪🇸 SPAIN52NT♦4-1+0
+1.9Round 18🇪🇸 SPAIN143♦♣7-2+5
+1.8Round 2🇧🇪 BELGIUM33NT♣K+1+0
+1.8Round 12🇫🇮 FINLAND92♠♦J=+0
+1.8Round 14🇫🇷 FRANCE74♥♠7=+0
+1.8Round 16🇨🇭 SWITZERLAND93NT♠3=+1
+1.7Round 14🇫🇷 FRANCE153♠♣J=+10
+1.7Round 16🇨🇭 SWITZERLAND34♥♣K=+3
+1.7Round 18🇪🇸 SPAIN42♠♣Q+1+0
+1.6Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND63NT♠3=-1
+1.4Round 4🇮🇱 ISRAEL163NT♦Q+2+0
+1.4Round 13🇮🇹 ITALY153♠♦A-2-6
+1.4Round 14🇫🇷 FRANCE34♠♣2=+0
+1.3Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND34♠♥K+1+1
+1.3Round 14🇫🇷 FRANCE81NT♣7+2+1
+1.2Round 5🇹🇷 TURKEY14♥♠4+1-4
+1.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND12♠♣5+1+0
+1.2Round 14🇫🇷 FRANCE131NT♦K+1+10
+1.0Round 5🇹🇷 TURKEY152♥♣A+1-10
+1.0Round 16🇨🇭 SWITZERLAND142♠=+0
+0.9Round 14🇫🇷 FRANCE92♠♦2+1+0
+0.8Round 8🇦🇹 AUSTRIA72♠♦2=-10
+0.7Round 5🇹🇷 TURKEY52♥♠J+2-1
+0.5Round 13🇮🇹 ITALY114♥♣3=+1
+0.4Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND144♥♠K+1+1
+0.4Round 12🇫🇮 FINLAND53♠♠5+1+10
+0.4Round 16🇨🇭 SWITZERLAND63NT♠7=+1
+0.4Round 19🇪🇪 ESTONIA34♠♦K=+0
+0.3Round 2🇧🇪 BELGIUM72♥♦A=+10
+0.2Round 2🇧🇪 BELGIUM114♥♦7=-1
+0.2Round 5🇹🇷 TURKEY113NT♣10+2-11
+0.2Round 8🇦🇹 AUSTRIA144♥♦A+2-11
+0.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND44♥♣3=+1
+0.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND73NT♥8+3+13
+0.2Round 12🇫🇮 FINLAND32♠♦Q+1-10
+0.2Round 13🇮🇹 ITALY45♦♠8=+0
+0.2Round 13🇮🇹 ITALY132♠♦Q-2-9
+0.1Round 18🇪🇸 SPAIN92♥♠9+1+0
+0.1Round 19🇪🇪 ESTONIA143NT♣5=+0
-0.0Round 13🇮🇹 ITALY34♠♦5-2+6
-0.1Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND53NT♥2+1+1
-0.1Round 13🇮🇹 ITALY22♠♦3+3+7
-0.1Round 13🇮🇹 ITALY105♥♠A+1+3
-0.2Round 4🇮🇱 ISRAEL133NT♠10=-2
-0.3Round 5🇹🇷 TURKEY64♥♠7+2-11
-0.3Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND161NT♥7=+2
-0.4Round 16🇨🇭 SWITZERLAND154♥♣A+1+0
-0.4Round 19🇪🇪 ESTONIA134♠♦2+1+0
-0.5Round 2🇧🇪 BELGIUM13♥♦2-1+2
-0.5Round 5🇹🇷 TURKEY124♥♠2+3-12
-0.5Round 8🇦🇹 AUSTRIA104♠♦Q=-1
-0.5Round 8🇦🇹 AUSTRIA115♣♦2+1+1
-0.5Round 14🇫🇷 FRANCE104♠♣K=+0
-0.5Round 19🇪🇪 ESTONIA44♠♣A+2-13
-0.6Round 19🇪🇪 ESTONIA163NT♣3=+1
-0.7Round 2🇧🇪 BELGIUM146♣♠4+1-11
-0.7Round 4🇮🇱 ISRAEL71NT♣6+2+10
-0.7Round 5🇹🇷 TURKEY104♥♣A+2-13
-0.8Round 8🇦🇹 AUSTRIA81NT♣2+4-5
-0.9Round 5🇹🇷 TURKEY81NT♣4=+0
-0.9Round 14🇫🇷 FRANCE61♦♠K+1+1
-1.1Round 16🇨🇭 SWITZERLAND44♥♣4+2+12
-1.2Round 5🇹🇷 TURKEY74♠♥5=-3
-1.2Round 12🇫🇮 FINLAND23♥♦Q=-1
-1.2Round 19🇪🇪 ESTONIA121NT♦7-1-7
-1.3Round 13🇮🇹 ITALY64♠♥A+1+0
-1.3Round 18🇪🇸 SPAIN104♠♣7=+0
-1.3Round 18🇪🇸 SPAIN124♠♥8-2+0
-1.4Round 18🇪🇸 SPAIN22♥♣3=-7
-1.6Round 16🇨🇭 SWITZERLAND11NT♣A=+0
-1.6Round 16🇨🇭 SWITZERLAND83NT♥K+4+9
-1.8Round 4🇮🇱 ISRAEL43NT♣10+2+0
-1.8Round 8🇦🇹 AUSTRIA15♦♠8+1-11
-2.0Round 14🇫🇷 FRANCE24♠♥5+2-1
-2.1Round 4🇮🇱 ISRAEL22♠♦9+2-6
-2.1Round 13🇮🇹 ITALY91♦♣9-1+0
-2.1Round 14🇫🇷 FRANCE42♠♦3-1+0
-2.2Round 18🇪🇸 SPAIN113NT♥6=+0
-2.5Round 2🇧🇪 BELGIUM43♥-1+1
-2.5Round 18🇪🇸 SPAIN73NT♥K=+0
-2.6Round 4🇮🇱 ISRAEL93♠♣A-1-5
-2.6Round 19🇪🇪 ESTONIA22♥♠K+1-1
-2.8Round 13🇮🇹 ITALY74♥♠8+2-1
-2.9Round 4🇮🇱 ISRAEL83NT♦10+1+0
-2.9Round 8🇦🇹 AUSTRIA65♦♠A+1+14
-3.0Round 19🇪🇪 ESTONIA14♠♦A=+0
-3.1Round 2🇧🇪 BELGIUM105♠x-3-4
-3.1Round 12🇫🇮 FINLAND162♠♠3=-5
-3.1Round 13🇮🇹 ITALY82♦♠K+3-2
-3.2Round 13🇮🇹 ITALY163NT♥5+1-1
-3.3Round 12🇫🇮 FINLAND41♥♣K+3-10
-3.4Round 18🇪🇸 SPAIN154♠♣J+2-11
-3.6Round 8🇦🇹 AUSTRIA163NT♥8+1+0
-3.7Round 8🇦🇹 AUSTRIA134♥x♠A-1-8
-3.8Round 8🇦🇹 AUSTRIA41NT♠6=-6
-4.3Round 2🇧🇪 BELGIUM94♠♥8+1+0
-4.3Round 13🇮🇹 ITALY123NT♠2-1-5
-4.4Round 18🇪🇸 SPAIN13NT♠8=+0
-4.7Round 4🇮🇱 ISRAEL53♥♠3=+0
-4.8Round 8🇦🇹 AUSTRIA53♥♣A=-1
-5.4Round 2🇧🇪 BELGIUM84♥♣Q=-3
-5.5Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND22NT♦2-2-7
-5.5Round 19🇪🇪 ESTONIA64♠♣3=-6
-5.6Round 12🇫🇮 FINLAND75♣♠8=+2
-5.7Round 5🇹🇷 TURKEY22♥♠Q+1-6
-6.3Round 14🇫🇷 FRANCE124♠♥Q+1+0
-6.4Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND105♠♦A=-4
-6.5Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND113NT♥3=+1
-6.8Round 14🇫🇷 FRANCE144♥♠A=-11
-6.9Round 2🇧🇪 BELGIUM54♠♣A-1-11
-7.2Round 2🇧🇪 BELGIUM125♦♥2=-3
-7.3Round 14🇫🇷 FRANCE14♦♠K-6-5
-7.8Round 13🇮🇹 ITALY146NT♦6+1+11
-8.5Round 5🇹🇷 TURKEY44♠♠2=-10
-9.5Round 8🇦🇹 AUSTRIA123NT+2-1
-11.7Round 2🇧🇪 BELGIUM23NT♥4+1-1
-11.7Round 2🇧🇪 BELGIUM152NTx♦8=-11