Scores 7X71 MainChallenge


February 2004 Scores


Analyses by Richard Pavlicek

The “Distribution Most Foul” play contest had 838 participants, and everyone scoring above average is listed here. Ties in the rankings are broken by the date and time of submission (earliest wins). At the end of this page is a “Bot’s Eye View,” which shows how various computer programs fared.

Top 100101201301Location RankingBot’s Eye View

Number of participants838
Number of locations104
Highest score60
Median score36
Lowest score15
Average score37.80

Top 100

RankScoreCCName123456
160HRDean PokornyBDFBDC
260USmoHoward DeanBDFBDC
360HULajos LinczmayerBDFBDC
460INNeelotpal SahaiBDFBDC
560BGZahary ZaharievBDFBDC
660UKenGareth BirdsallBDFBDC
760USmoDing-Hwa HsiehBDFBDC
860USilCharles BlairBDFBDC
960FRFrancois DellacherieBDFBDC
1060PLEustachy TrutenBDFBDC
1160ZWLeif-Erik StabellBDFBDC
1260PTManuel PauloBDFBDC
1360UKMarcus ChiloarnusBDFBDC
1460NLFrans BuijsenBDFBDC
1560UKenJohn ReardonBDFBDC
1660USwvJim OlsonBDFBDC
1760CNNing LiuBDFBDC
1860UKenFrances HindenBDFBDC
1960UScaRob StevensBDFBDC
2059CNWuping LuBFFBDC
2159PLRoman KujaczynskiBDFADC
2258PLWojtek SiwiecADFBDC
2358PLHieronim WspanialyADFBDC
2458PLKlitajmestra DzierlatkaADFBDC
2558CNJing LiuBDFBFC
2658PLTomasz RadkoBFFADC
2758INKamal RoyBDFBFC
2858HUImre CsiszarBDFBFC
2958INGowniyan VaideeshwarBDFBFC
3058DERainer HerrmannBDFBFC
3158INSivakumar SalemBDFBFC
3258BESebastien LouveauxBDFBFC
3358INVenkatesh RamaratnamBDFBFC
3458USohCarolyn AhlertBDFBFC
3558UKenToby KenneyBDFBFC
3658USorJohn LuskyADFBDC
3758UKscNigel GuthrieADFBDC
3857NLJan TesselaarBDFAFC
3957ILRafi AmadoADFADC
4057ROLaurentiu DimcicaBFFBFC
4157SECarsten KofoedBDFAFC
4257CNWeidong YangADFADC
4356AUBruce NeillBBFBDC
4456BGOgnian SmilianovADFBFC
4556HKHongyan ChenBFFAFC
4656ATMartin OgrisBDFEDC
4755RESylvain BrethesCDFADC
4855FIJouko PaganusBEFBFC
4955UKenAnthony GoldingAFFBFC
5055UKenMichael ClarkBDFAEC
5155UKwaJulian PottageEDFBDC
5255USpaSteve WhiteAFFBFC
5355USmaBob BoudreauAFFBFC
5455CAonDale FreemanBEFBFC
5555PLKazik DrozdzBDFCDC
5655USwaN. Scott CardellBEFBFC
5755CAbcSandy McIlwainBEFBFC
5855CAnsGerald MurphyADFAFC
5954BEAlon AmselBDDBFC
6054FRPatrice PiganeauBDFBBC
6154NOKristian KjorstadBDFEFC
6254UKenTeymur TahseenBDDBFC
6353USflSteve BarcusBDFFDC
6453NLFoppe HemmingaBDFFDC
6553USohDavid OlsonBDEBEC
6653ESJordi SabateCEFBDC
6753FIJuuso LeikolaAEFBFC
6853CAabDaniel BertrandBEFBEC
6953NLThijs VeugenBFFAFA
7053CNXiongwen GuBDFCFC
7153PTJorge CastanheiraBFDBFC
7253CApqNorm GordonCFFBFC
7353UKenDouglas DunnADFAEC
7453PLSlawek CwiekADFCDC
7553NLDaniel de Lind van WijngaardenAFFBEC
7653FIErkki MalkamakiAFFEDC
7753UScaGrant PeacockBFDBFC
7852USmaCharles AltmanBDFBFE
7952CNWqiqiqi Laoqi WuADDBFC
8052PLJulka KowalskaBDFDDC
8152CAnsB. Downey GroverEFFBFC
8251USinTim DeLaneyBDFBAC
8351UScaTysen StreibBBDADC
8451USazSteven PriceADDAFC
8551HKPui Kei TsangBBEBFC
8651CNLiang ChenAFFEFC
8751ZASid IsmailAFFAFA
8851USiaBob McCurdyAFEAFC
8951FRThibault WolfBDFCEC
9051SERolf MattssonBDFFFC
9150UKscPaul GipsonBDFCFA
9250USHarry QianBFFFFC
9350DEGordon KollingBFFBFF
9450CNJiantao LuoEEFBFC
9550PLDarek KardasADFDDC
9650CAabDavid JohnsonDFFBFC
9750CAonBala IyerBEFCFC
9849IDNoer Imanzal KartamadjanaEDFEFC
9949CDPaul InbonaAAFBDC
10049PLEuzebiusz RebajlloAAFBDC

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

Places 101-200

RankScoreCCName123456
10149USgaFred TanzerBFFCFA
10249USmaBarney ReiffenADFEFA
10349IECiaran CoyneADFFFC
10449PLJacek MasiarekABFCDC
10549RUArtem ArikovEFEBFC
10649CNHulu JiuBFABEC
10749CAonGabriel Nita-SagunaCDFBDF
10848USalJohn LawsonEFFEFC
10948SGPoon HuaEFFEFC
11048USvaYi ZhongAFFEDB
11148UScaRich PavlicekBFFFEC
11248USnjTina DalyAFEEFC
11348CAbcConnie DelisleBEFFFC
11448UScoJess CohenEDFBFB
11548PTCarlos CabrinhaABFAFA
11648AUBill PowellBEFBFF
11747INAbhijit GhoshEDFAFB
11847USmiGordon ParnesBFEFFC
11947USvaKaustuv DasEFFCFC
12047HKPui Kong ChiuBFDBCB
12147HUIstvan FayABFCFC
12247EGAndrew de SosaADFBEF
12347USflPolly OberBFFEFE
12447PTPaulino CorreaFDFCDC
12547PLMarcin ZbrojaAEFDDC
12647PTManuel OliveiraBBFBFF
12747CNSheng JiaoBFAEFC
12847UKenJulian WightwickBBFFFC
12947CNHubin HubinBFEFFC
13046CAabDick YuenCFFAFE
13146SEAdam FolkeBEFDCC
13246ITMarco CatellaniABFADF
13346CAmbDavid SiredAFFAFD
13446USDavid DunstanEFDACC
13546NLMonique van de SandeCCFACC
13646USpaAndy PurbrickAFECCC
13746HRTomislav BosnjakAFDCFC
13846CAabJan LipsECFAFC
13946UKenNorman GrantDCFADC
14046UKenAdam DickinsonDDFCFC
14146CNAlex XieEBDADC
14246CHOlivier La SpadaEDDAEC
14346PLAndrzej KrakowiakABFDDC
14446PLWojtek UrbanABFDDC
14545CNYing MaAFFFFA
14645CAonNick WongCFFAFF
14745USncJon RiceEBFEFC
14845USorMike SweetAEFDFC
14945ITFrancesco BadolatoAEFCFA
15045SGAdam KingEFFFFC
15145UStxRichard HigginsADDBEB
15245RUEvgeny NozdrinEBEBCC
15345NLTjebbe WitteveenBDCFCC
15445HRZoran BohacekAFFCEA
15545PLAndrzej MatuszewskiBFDDFC
15644USorPaul FlashenbergAFFEFF
15744UScaLen VishnevskyBAFFDC
15844CAnsDel KnoxBBFECB
15944TRUfuk CotukBAFFDC
16044TRMurat YavuzADFFDF
16144AUKeith BarrieEFFDFC
16244USazMax JohnsonEFFCFA
16344SITomaz ButinaAFFEEB
16444USnjRoger CooleyDDFAFE
16544USflJeff HandBBEBFF
16644SITolja OracEBFBEA
16744UKenGeraint HarkerABFDFC
16844CAbcBrad BartBDFFFF
16944FRDaniel TixierBFEEFE
17044UScaBarbara JonesABAEDC
17144NLPhilip MokveldADACDA
17244CHBeda WettenschwilerEFECFC
17344BELuc SegersADAAFB
17444FRJean-Christophe ClementABDEFC
17544PTJoao CostaEBFCFC
17644FIJussi TamminenCFBBFC
17744UStxDavid CochenerEFFDFC
17843USilGeorge KlemicEDEBFF
17943HKWing-Kai HonBFFCEF
18043UKenAudrey KuehEDEBFF
18143USilDan EnglishEBFCCC
18243USkyRuss HoltzclawEFDCFC
18343AUAndy ChanECEAFC
18443UScaPhil SwanEFFCDE
18543CAabSheldon SpierCEFAFF
18643USinJohn HuusEFCEFC
18743AUBob GeyerEFFACF
18843UScaDan ScarolaEBFBFE
18943UStxAlbert SekacBBFCFE
19043TRAhmet Turan OnerABFEFB
19143INShreerang JoshiCDACFC
19243FRPhilippe GuichardEDEBFF
19343BGTchavdar NikolovEDAEFC
19443ITValter BoettiADFDFB
19543USflF.B. GreenEFDCFC
19643UKenCarlos DabeziesDFEEFC
19742UScaAllen ProhofskyEEECFC
19842BEBram AmselDFFBFD
19942USmdFrances KnopfDFDEFC
20042TRCengiz OncuADFFFF

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

Places 201-300

RankScoreCCName123456
20142IEMary CollinsFEDAFC
20242AURuben LjunghEFFFFA
20342UKenAndy PdsivjfpsEBFEFA
20442USpaStefan BasinskiEBFCEC
20542CAonGreg WhittakerEFCCFC
20642CAonDouglas McCorkellCBEBDF
20742BEJean VerbekeABFEFE
20842INBonny D’LimaACFCFA
20942NOMagnus GulbrandsenFDFACE
21042USmoCharlie LynnEBFFFC
21142CAonTom ButtleEDDFFC
21242UKenMike TuckerEFFEFE
21342USnyGerald CohenAFFCEE
21442CAnsBryson CrowellADEEFF
21542USpaDavid KlausBAAAFC
21642BGVentseslav DankovBFECFF
21742USPat RichEDDFFC
21842UScaSteven HoughECFCFC
21942TRSitki SonmezerBFECFF
22042THApisai MakmitreeBBFCFF
22142USctScott MaramoECFCFC
22242BERutger van MechelenAAFCFC
22342EEAndres VeerEBEEFC
22441NZPieter VerhoekBBFCFD
22541CNQing YeCBDCFC
22641CNMichael LiuEBFCFA
22741RSZoran RadojcicAFFDFE
22841USwaKeller WightmanADFFEE
22941USncMike RiceEBDEFC
23041USwaJohn GivinsEFFCFE
23141CAonPieter GeerkensBAFDFC
23241ARJorge GueglioEBECFC
23341INJoy SarmaEBECFC
23441TRLeyla KezerAFECFE
23541PLKrzysztof KurowickiECFAFB
23641CAonJunaid SaidBDECEF
23741USnyGrace LloydAFDCFB
23841SEBjorn SorlingEFFCFE
23941CAbcBrent MooderCEFCFB
24041EEMeelis TiitsonADFCED
24141USvaMariana KoosFFEECC
24241UScoCharles GoudeyFBFECC
24341CAonJohn CunninghamAFDFFA
24441USflLen RubinBCEFDA
24541IEWillem MeviusEFEDFC
24641UScaStu GoodgoldEFFCFE
24741CNQijiao WeiAFFFFF
24841CNFlying RainEFFCFE
24941CNRiven KingAFFFFF
25041UKenPaul McDonaldEBFECA
25141USmaBruce TedfordAFECFE
25241UStxJimmy HubbardACFCCA
25341AUBill HearnFFECFC
25441EEJan TartanEBDEFC
25541DEChristian GlubrechtABEDFC
25641DEJoerg WenschCBEEEC
25741USmnAndy CaranicasADDCFE
25841UScaRichard AronsonEBFCFA
25940CNYuyang WangCDFCCD
26040DEHans FleischhackBBFDCB
26140ROOana CherciuEDAAFE
26240USilJack HagertyDFEEDB
26340NZMoira MacnabEBECCC
26440USnyBruce RossAFFDFF
26540HKSing LamEEDCCC
26640USmsPeggy MillerADFDCF
26740IDPika PiskantoBBDFFA
26840ARRaul MartinoEADBFC
26940UScaMarina FomenkovaEBFAFD
27040CAnbMike HartopEBFEFB
27140CAonJack ShinehoftEFFEFD
27240PTPedro MorbeyAFFDFF
27340USctRay BazinetBBECFE
27440SEMans NedlichEBFACF
27540USnjLeonard HelfgottEDFCCF
27640CAonMatthew MasonEBEBCB
27740USnyJay LevyCFFDFB
27840BGIrena FilkovaAFDEFF
27940USdcJonathan SiegelEBDCFC
28040FITaru SuppulaAFDCFE
28140USnjValerie TrittEEFEFE
28240ESJavier CarboneroCADAFC
28340ATMichael BenediktEFDAFF
28439SGCharles LeongEFEDEC
28539UKenJohn OsmondECECFC
28639USokFrances DolanDBCBDB
28739UKenStephen TurnerDDFCFF
28839USmaVincent HarackiewiczEEFCFE
28939USmsJane HewesEEDADD
29039IDDayle GilliattEFECFB
29139ROKostea CucuEBEFFC
29239USSteve DahlemECFCFA
29339SGRoddy KokCFFDFE
29439PTGoncalo EsmeraldoAEDECB
29539USflBarbara TateECDEFC
29639UScaJack ShifferEBFEFE
29739NLMartijn SchoonderwoerdEFEDEC
29839USPaul AshEEFEFF
29939NZMichael JohnstoneEEFCFE
30039USvaMark McEnearneyAAFDFC

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

All Others Above Average

RankScoreCCName123456
30139NLWilliam ClaassenAFFDFD
30239USmnTony AmesFFFCFB
30339UKenMary StanleyECEBEA
30439UScaJim BauchEFFCEE
30539NZStephen CullenFDEAFF
30639ROAlin SalinackiECDEFC
30739INGopichand AnneFBFFFC
30839IDSuatmodjo NaslanEBFAEF
30939TRCengiz MirogluBDEDCF
31039UStxRobert SzafranskiECFCFA
31139USflCoimbatore IswaranEBFCFB
31239USmnJack RhatiganAFDCFF
31339ROMarius CosmaEFEEFE
31439CApqPeter SchwartzEFEECB
31539PTMiguel JoaquimCFBCFC
31639FRDavid EliasEEDFFC
31739CApqAnsar BurneyDCFCCC
31839CAonNaveed AtherABFFFE
31939USakGary IrwinFCEADA
32039USflMarcia GreensteinBBEEEE
32139CAonRichard WilsonAFDFFB
32239PTAnant RajaniEBFCFB
32338USnyBarry RigalAFEFFF
32438CAonPearl GoodmanFBFACE
32538LVIvars RubenisABFCEF
32638INRaghavendra RajkumarEFECFE
32738USdcDaniel MorganEBFCFE
32838USvaChris JohnsonEFFEED
32938USscWes BaileyABAAEB
33038USmiRonald RasanskyEDFDFF
33138SETommy JanssonEDFDCE
33238TRBurak BitlisECFEEA
33338CAonDavid ColbertAFCCEB
33438UScaMichael BaianoEBFCFE
33538USgaBill BickfordDBFAEE
33638USnjSteven ShulmanDCFEFA
33738USnyGene MarksEFECFE
33838UScaAlan ShotkinEEEAFD
33938USorJames WeiderCFDCFE
34038LBZouheir EzzeddineEFCAFD
34138CApqDanny KatzEBACFC
34238USpaFrank AbelEFECFE
34338NZBruce KellyFBECFC
34438UScaJimmie SwanECFCDE
34538UKenAshley SawyerAFCCCE
34638USgaMike BenoitEBFCFE
34738CAnsPhilippe WestreichABECFE
34838UScaSandy BarnesFAFAEC
34938IDEdi NugrohoECFAFD
35038RORadu VasilescuEFFDFE
35138USvaPrahalad RajkumarEBEAFF
35238ESHector FuentesEBEFCC
35338CAbcDavid HooeyEBFCFE
35438CAonJim PewECEEEC
35538ILMoshe WhiteECECDA
35638USkyMax HooverABACFA
35738CNXiangrong WangAEECFF
35838USAdams ZhouABFFFF
35938PTAntonio Costa-CabralEBFECE
36038USpaSal BerenholzFFEECA
36138USmdJohn GlynnABDEFE
36238AUCharles BakerFFFEFF
36338HUBalazs KovacsEDDCFE
36438ROGelu SerpoiAEFDFF
36538CNJet ChjDDFCFD
36638AUDiana HearnFFACFC
36738CApqPascale GaudreaultEBFCFE
36838USnyJack PresserEFCDCC
36938BGVioleta StaykovaEBFEFF
37038UScaSrikant SridevanEFFDFE
37138ESMargaret SpaargarenACDCFA
37238USflJim TullyEECFFC

Names with accented or non-English letters have been converted to an English representation with a 26-letter alphabet. Many people use erratic capitalization, so I determine proper case by algorithm; if this does not correctly display your name, please advise and I will add it to the exception list. If you wish to contact someone whose name you see listed (such as a lost friend) give me permission to send your address to that person, then he or she can contact you. I will not give out e-mail addresses (these are private and go nowhere from me).

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

Location Ranking

This table lists all the participating locations, ranked by the average score of their entries. The “Best” column shows the best finish (by rank) of any player in that location. Locations with less than five entries are ineligible for the top ranking and grouped separately.

RankAverageBestCCLocationEntries
150.2610PLPoland19
245.0068CAabAlberta6
344.4617CNChina28
444.3330DEGermany6
543.244INIndia17
641.8037UKscScotland5
741.712USmoMissouri7
841.3336USorOregon6
941.003HUHungary8
1040.839FRFrance12
1140.5032BEBelgium10
1240.0058CAnsNova Scotia9
1339.8912PTPortugal19
1439.6798IDIndonesia6
1539.6066ESSpain5
1639.405BGBulgaria10
1739.2245HKHong Kong9
1839.2048FIFinland10
1939.026UKenEngland51
2038.6241SESweden13
2138.6114NLNetherlands23
2238.2353USmaMassachusetts13
2337.88132ITItaly8
2437.80142CHSwitzerland5
2537.6761NONorway6
2637.6792USUnited States9
2737.45110USvaVirginia11
2837.4154CAonOntario34
2937.40112USnjNew Jersey10
3037.2939ILIsrael7
3137.2140RORomania14
3236.9143AUAustralia23
3336.69151UStxTexas13
3436.5052USpaPennsylvania16
3536.40213USnyNew York15
3636.2757CAbcBritish Columbia15
3736.208USilIllinois10
3836.20159TRTurkey15
3936.20257USmnMinnesota5
4036.1819UScaCalifornia49
4136.11109SGSingapore9
4235.71114UScoColorado7
4335.6756USwaWashington12
4435.27103IEIreland11
4535.0934USohOhio11
4635.00101USgaGeorgia7
4734.2584USazArizona8
4834.20147USncNorth Carolina10
4933.9672CApqQuebec23
5033.86163SISlovenia7
5133.83224NZNew Zealand12
5233.00465TWTaiwan6
5332.71199USmdMaryland7
5432.3363USflFlorida46
5532.0087ZASouth Africa10

RankAverageBestCCLocationEntries
5660.0011ZWZimbabwe1
5760.0016USwvWest Virginia1
5855.0047REReunion1
5951.0088USiaIowa1
6050.331HRCroatia3
6149.0099CDCongo (Dem Republic)1
6247.00122EGEgypt1
6346.0013UKUnited Kingdom2
6444.3346ATAustria3
6544.0051UKwaWales2
6642.00220THThailand1
6741.00105RURussia4
6841.00227RSSerbia1
6940.50232ARArgentina2
7040.33118USmiMichigan3
7140.25223EEEstonia4
7240.00270CAnbNew Brunswick1
7339.50266USmsMississippi2
7439.2582USinIndiana4
7539.00319USakAlaska1
7638.50182USkyKentucky4
7738.00108USalAlabama3
7838.00340LBLebanon1
7937.50221USctConnecticut4
8037.00325LVLatvia2
8136.67279USdcWashington DC3
8236.00431USnvNevada1
8336.00450USarArkansas1
8436.00451SKSlovakia1
8535.00498CZCzech Republic1
8634.67412USnhNew Hampshire3
8734.50391DKDenmark2
8834.00133CAmbManitoba2
8934.00512VGVirgin Islands UK1
9034.00537BRBrazil1
9133.67475UStnTennessee3
9233.00329USscSouth Carolina2
9332.50286USokOklahoma2
9432.00608VIVirgin Islands US1
9532.00610USnmNew Mexico1
9631.33478USksKansas3
9730.67530USlaLouisiana3
9830.50624PKPakistan2
9930.33596CLChile3
10030.00683CAnfNewfoundland1
10130.00714USwiWisconsin1
10229.50715ISIceland2
10328.00757CApePrince Edward Island1
10426.00795CAskSaskatchewan1

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

Bot’s Eye View

I posed these play problems to some of the well-known bridge computer programs, and the results are tabulated below. (These results are not included in the “number of participants” shown above, nor in the calculation of the median or average score.) Most of the programs have different skill settings (thinking time), and this was set to the highest level within reason.* The scores and rankings, based on six specific problems, are not necessarily indicative of each program’s overall capability.

*I do not allow any setting that takes more than a minute to make a play. Time considerations are also used to break ties, i.e., if two bots have the same total score, the edge goes to the one that took less time. I conduct the tests on a 2.0 GHz CPU with 512 MB RAM, running Windows 98.

This month I could have called the bot tests, “GIB plus Jack, and the Rest of the Pack,” as it was a blowout. GIB came through with a fantastic 56 — the highest bot score ever (previous high was 55, reached several times). Jack was a distant second with 48 but still a fine showing with 37.94 the average human score. The rest were way back.

GIB was impressive, as each of its four 10 scores were based on correct technique, which I followed to the end (or close thereto) to verify. It often happens (even for humans, hehe) that a correct answer is based on a fortuitous choice without fully grasping the problem, or just a blind guess; but GIB got no freebies. Curiously, on Problem 5, which GIB missed, Jack came through with the perfect technique. Hmm. If these bots ever team up, we may be in serious trouble!

As usual, some of the choices went off the chart.* On Problem 4, several bots won the second heart and led the S 4 — not one of my options but better than some, so it is shown as Line G, scoring 5. Similarly, on Problem 5, Blue Chip Bridge chose to cash one diamond before leading the S 10 (the proper play) — clearly inferior but not bad, so this Line G scores 6. My designation of Line H (think “hopeless”) means the choice was clearly worse than (or equal to) the worst listed option — and since it’s almost dinner time here, I won’t spoil my appetite by describing them.

*When a bot chooses an unlisted line of play, I substitute a listed line if the difference is trivial or negligible. If the difference is significant, I record the actual line and score it appropriately, but never lower than the award for the worst listed line.

HAL produced another single-digit masterpiece. Nine? Geez, now it can’t even proclaim “A perfect 10!” on its web site. But wait! There could be a hidden message here. Its answers spell FAB DAD, which might refer to my son Rich, who just became a father — or maybe me as a grandfather. Cool!

February 2004 Rankings
RankScoreCCProgram version123456
156USGIB 6.1.3BDFACC
248NLJack 2.03CDDADA
336DEQ-plus Bridge 7.1CCAGCC
433USBridge Baron 14.0DCAHDC
533CABridge Buff 11.0HEFHDD
626JPMicro Bridge 10.02DCAGFH
725UKBlue Chip Bridge 4.1.0HBAGGH
89USHAL 9000FABDAD

Participants (alphabetical)
ProgramAuthor/Creator
Blue Chip BridgeIan Trackman and Mike Whittaker
Bridge BaronTom Throop and Stephen Smith
Bridge BuffDoug Bennion
GIBMatthew Ginsberg
HALSomeone with a warped mind
JackHans Kuijf
Micro BridgeTomio and Yumiko Uchida
Q-plus BridgeHans Leber

Scores 7X71 MainChallengeAnalysesTop February 2004 Scores

© 2004 Richard Pavlicek