Scores 7V79 MainChallenge


April 2002 Scores


Analyses by Richard Pavlicek

The “Keep the Ship Afloat” play contest had 687 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 participants687
Number of locations101
Highest score59
Median score37
Lowest score18
Average score37.71

Top 100

RankScoreCCName123456
159UScaGrant PeacockBBBAEC
258UKenJohn ReardonBEBAEC
358CAonGabriel Nita-SagunaBEBAEC
458UKMarcus ChiloarnusBEBAEC
558UScaRob StevensBEBAEC
658USilCharles BlairBEBAEC
758USmaBrian LeeDCBAEC
858RUAlex PerlinBEBAEC
957DERainer HerrmannBBBCEC
1056PLDarek KardasBBBAEB
1156PLMarcin ZbrojaBBBAEB
1256PLKazik DrozdzBBBAEB
1356UKenAnthony GoldingDCFAEC
1456HRTonci TomicDCBCEC
1556PLWojtek UrbanBBBAEB
1656PLJacek MasiarekBBBAEB
1756HKWalter LeeBCBABC
1855UKenGareth BirdsallBCBCFC
1955RORadu MihaiBBBABC
2055FIErkki MalkamakiBBBABC
2154PLSlawek CwiekBABAEB
2254UKSteven WhitakerBBBEAC
2354INArvind SrinivasanBBBAAB
2453USohCraig SatersmoenBBBCBC
2553USwaN. Scott CardellFBBCEC
2653UKenFrances HindenBBFABC
2753HUImre CsiszarBABABC
2852ITStefano BiciocchiFCBCAC
2952UKenNeil MorgensternDCFCAC
3052USmaJonathan WeinsteinBBBEBC
3152RUSergey KustarovFCBABC
3252UKscNigel GuthrieFCBABC
3352AUBill PowellDCBCBC
3451USilKent FeilerBABEFC
3550USnyFranco BaseggioFEBABC
3650CNWeidong YangFBBCEB
3750UKenDouglas DunnACBABC
3849USnyBarry RigalDBBCAF
3949BEBernard DanloyFBBCBC
4049UKenStephen TurnerFBBEEB
4149UScaMarvin FrenchFBBCEF
4249UScaBill ShuttsDBAABC
4349TRBerk BasaranBCACAB
4449CAbcConnie DelisleBBFBEC
4549FRJean-Christophe ClementFBBCBC
4649NLMicha KeijzersDCFEBC
4749FRPascal Plaga LemanskiBBBCBF
4849CAbcBrad BartBBFABF
4948INKaustubh BendreDBAADC
5048BEEric BaesFCFCBC
5148USnjLeonard HelfgottFCBABF
5248CAonJohn CunninghamDCCADC
5348NLGraard SteenbakkersBCBFBF
5448UKenCarlos DabeziesDCBCBF
5548BESebastien LouveauxFBBEBC
5648UScaPhil ClaytonBCAAFE
5748USflNicki CaplanDBBEAF
5848UScaMike WeberDBACFC
5948CAonMichael SelbyFCBCAF
6048USohCarl HudecekFCBABF
6148USilWalt SchaferDBBCAE
6248TWSuyu ChiuDCFCAF
6348UStxBilly LeeperFBBCDC
6447USmdRichard PriceDCAAFF
6547CAnsBryson CrowellDBBCBF
6647ZABernard DondeFCAAEE
6747AUBill JacobsBECCEF
6847NLKees van Schenk BrillFBFAAF
6947USilBruce ScottDBACBC
7046AULeigh GoldDCFCBF
7146JPMark LaForgeDCFFAF
7246USDave ScottFBBFDC
7346SEJohnny JohanssonFBBCFF
7446UScaRichard SteinBDBABF
7546NLFrans BuijsenFBBCAE
7646BGRossen GeorgievDABEAF
7746NZDerek MallochECFABC
7846CAbcMerv AdeyDCFEAE
7946THTim BolshawDECCFC
8046CAonKathryn ScwartzentruberFCFCAF
8146TWWen-Lung HuangDCACAF
8246TWI-Don JienDEFCAF
8346HUGyula ArgayFBBABE
8446USncCharles FrithDDBCEF
8545NLRosalind HengeveldFBACEF
8645UKenChris MeasuresDCBFDF
8745INKesavan SubramanianFCAAFF
8845AUIvan KeelerDEFCCC
8945UScaAnne BellFAAABC
9045SEKrister AhlesvedFBBCBF
9145SERobert LarssonBBDCDC
9245INPratap NairBBCCBB
9345UKenAndrew MorrisBEAFDC
9445INRajagopal GopalakrishnanDCBDBB
9545ILYoram BavliBBACBF
9645UScaRoger CloughFCBCDF
9745UKenMark LehtoFBFCAF
9845SIMatej AccettoFBBCBF
9944CAonRobert DefreyneDCFEBE
10044DKSoren FritzbogerFBACDC

Scores 7V79 MainChallengeAnalysesTop April 2002 Scores

Places 101-200

RankScoreCCName123456
10144USflMel KleinFCBFBF
10244AUMargaret LindgrenDBDAFB
10344UKenDavid MorranFEFCAF
10444TRNoyan EkiciFCAABF
10544UScaPat FranklinFCFCBF
10644CAabMartin McDonaldFCBCBD
10744UScaRich PavlicekDBBFDF
10844USnyThomas WasselFCBCBD
10944CAnsB. Downey GroverFEBCBF
11044NLYke SmitFBBEBF
11144CAonChuck ArthurEBFCFC
11244UScaMichael KaplanDCAFAF
11344UKenMark GoddardFCFEBB
11444NOKay StrandDBAEAF
11544SEAnders AslundDEFCBF
11644SEArne JordestedtFCFCAD
11744UScaVera MekayDBFFFF
11844UStxRichard HigginsBBAEBF
11944TWYe-Fon TsaiDEACAF
12044USmnDavid NeimanFBFCBB
12143USmoJonathan GoldbergFCFFBB
12243CAabDavid JohnsonFBFCBF
12343UKenDavid DaviesDBBDBF
12443CAnsGerald MurphyDCAEBF
12543INPrakash EaswaranFCCEAB
12643SEBjorn FrimodigFAFFEF
12743USnyLeonard BrumFBACAF
12843USflIrene PowersCCBCBF
12943USndNoreen BraunDCAEBF
13043UScaJan NathanFCACBB
13143USflPeter CleavesDCFEBD
13243CAJohn HousemanDEDCEF
13343CAbcShirley JunkinFCBFDF
13443CAbcGeoff CroesDCAEBF
13543USflRod KerrFEBFFF
13643NLTommie NooijBDAAFF
13743ESJames CalabutDCACDF
13843NLLeo JongensBCAFBE
13943USnyJoan AndertonFEFCBB
14043INVibhas TodiDBBFCB
14143RORadu MarcoviciFCFFBB
14243UKGareth MillwoodCCBCDB
14343UKenCsaba RadulyFBFCBF
14443CHOlivier La SpadaFBCEBC
14543AUSandy McCullochFEBDDC
14643USmaArthur ShahianDBECAF
14742SEAnders LandmarkECBACB
14842UKenGordon RainsfordFCBFCB
14942USflArthur HoffmanDBAEFE
15042TWChen Jye ChwuDBACDF
15142TRYavuz OvacikDCAEDF
15242USmoThomas KniestFCFEBE
15342USnyTom BarryFCFEBE
15442AUKeith BarrieFCACBF
15542ZABrad Ross-JonesFCFFBF
15642ESRaimon TatxeBEAEDF
15742CApeJudy ReillyDDFFBC
15842UScaDennis KiblerDDFCAF
15942NOJon Ivar BolandDDBCBF
16042ATKarl EigenbauerFCAFAF
16142ISUlfar KristinssonFBACAE
16242INShyam SashitalDBFEDE
16342USflArnold KimmelEBFEBC
16442INShreerang JoshiDCABEF
16542TRSema CokgorFCBEAA
16642UScaBarbara ReichmanFCBCCE
16742UKscTim McKayDBAEBF
16842NOMagnus SkaarDCACDE
16942PLArek KulawikECBCBF
17042INSivakumar SalemFDBABF
17142CAonChris ChambersFCACBF
17242HRZoran BohacekBAFBAB
17342USncDale SwiftFCAEFF
17442INGovindarajan SrinivasanFBBBAB
17542INNeelotpal SahaiFCACBF
17641UScaLen VishnevskyEEBABE
17741USilJames HudsonFCFCCF
17841USncFaye SattinECFCBB
17941CAnfRahul ChandraFCAEBF
18041IDDidik KoesbiantoDCAFDF
18141INMaha SundarEBBCBF
18241HUGreg UdvariFCACDF
18341UScaDoug BurkeFBFFBF
18441UScaStu GoodgoldDCACCF
18541USdcSimon SteelECBCBE
18641CApqPeter SchwartzDCCEDF
18741USakDave JacksonDCCFDB
18841UScaArne FlonesCCBCCB
18941AUDavid SternFEAADF
19041USmdDiane WalkerFCACBE
19141PLPiotr BednorzEEFAFF
19241CAonLarry GiffordFAAEEE
19341USdeBarry GibsonDEFFBE
19441SENiklas WarneFCACDF
19541USnyAdam LallyFCBDDF
19641CAonJean-Pierre PatryFDBCFF
19741USnyJack PresserBBFECD
19841UScaHarold SimonFEFEBF
19941USohCory NeidermanFDBABE
20041AURon HutchisonFBBBAF

Scores 7V79 MainChallengeAnalysesTop April 2002 Scores

Places 201-300

RankScoreCCName123456
20141USvaJohn ConoverFDFCDC
20241SIHubert FroehlichFBBDBF
20341USnyBruce RossDBCCDF
20441USscRajan IyerFBAEFF
20541USmtBruce CookFCACBE
20641USmdJim PestanerDCAFBE
20741DEUlrich VoigtFDBEAF
20841ITAlessandra La SpinaBCFBDF
20941UKenMichael ScanlonECBCDF
21041USwaBill SinnettFBACBF
21141UStxAlbert SekacCCACAF
21241TRDogan GokbelFBAADE
21341UStxJeff KaldemEABCAF
21441TRReha AkgunFBAADE
21540AUGeoffrey ToonFCAFBF
21640TRErdinc ErbilEEACEF
21740ROAlin SalinackiFEACBF
21840USkyRuss HoltzclawEBFADF
21940USwaBob RichardsonFEACBF
22040CABill TurnbullFCDADF
22140UScoJameson ColeECFCDB
22240UScaTom McGuireFEACBF
22340USkyWes HarrisDCDCDF
22440UKenDafydd JonesFCAEDF
22540USnhRichard BatorFEAFAF
22640UScaRai OsborneCBFCDB
22740NLThijs VeugenDBCEDF
22840UScaRon JacksierFEBDBF
22940USflCarol MullinsDEFBAF
23040CAskCal McLeodECACAF
23140BELuc SegersBDACBF
23240CAbcMichael DimichDEBECD
23340CAbcChuck MoorheadECBFBF
23440HRZoran MandicDBBBBE
23540USLaura NoonanECBDFB
23640SIMilan RancFCFDBF
23740CAonKim IrelandBFECBC
23840USilKaren WalkerFCFECF
23940GRAngelo GiokarisACADBC
24040TWRoy TsaiEBFDFC
24140AUMike DoeckeDCDCDF
24240ROGabriel DumitrasciucDBABDC
24340HUPeter TalyigasFCAEDF
24439USgaBill BickfordFCDCBF
24539UScaRonald KowFCAFDF
24639SISimon PirjevecCCBDBF
24739UScaCharles ThompsonFBAFBF
24839CApqGerald LeclercEEBFFF
24939INAshok DhareshwarFCFFCF
25039UScaSteve MagerFEAEBF
25139USmaK. Scott KimballFAAFAF
25239USmdMorris TepperFCCEDF
25339CAnbMike HartopFCAFDF
25439UScaPhillip MacklerECAADF
25539EEAllar PadariECFCBE
25639TRSuleyman Ufuk KocFEACDF
25739UKwaSteve WebbCBACFF
25839UKenRose DasDDFCBE
25939USnyDennis KayeEABCBF
26039DEHans FleischhackFCAFDF
26139USnyBrian MeyerDCABFF
26239USwaKeller WightmanBBABBF
26339USpaJanet StineFCAFDF
26439USnyWilliam SchmittECDCBC
26539AUBob GeyerCCACBF
26639UStxHerbert WiltonFBBBBF
26739FREtienne KlisDBBBBD
26839USnjLarry PennefatherFCADFF
26939ITLuigi ZaninoniFBAFBF
27039CLConstantino SifaquiECAADF
27139UScaBill CubleyDEABDC
27239CAonDale FreemanFEACDF
27339USmaMelita WarnerACFFEA
27439INVikas PhadkeFBBECD
27539PTManuel PauloFBBBBF
27639USnjDirk EnthovenEBFEAE
27739UScaSteven HoughDBAECF
27839USmiHoward AbramsECAEAF
27939USdcRon ZuckerFAAEFF
28039USokVelma KubiakEBBEDF
28139IDFirdaus Ma’rufEBBEBE
28239ROHoria GarbeaCCFCDE
28339FIJuha TamminenFEFDBB
28439RODaniel MoisaDBCECB
28538USnyDaniel TestaECAEAE
28638CAonDavid GraingerFCAECF
28738USohDavid StuckeyFECEBF
28838UKniRobin BurnsFAAEBF
28938USncRon MarrsFEACDE
29038UScaPaul NelsonECFFBF
29138ILAlex DovEBCCAF
29238INShaishav ParikhECACBF
29338USnjPaul QuodomineFEAEDF
29438UScaRon LandgraffECACBF
29538UScaDan ScarolaECBFDE
29638USiaDorothy EggerssDEFBBF
29738AUTania GariepyECAABD
29838CAonSheila McDonaldFEAEDF
29938USalDonna DahlDEADBF
30038USwaMarsha RaytonEEBCDE

Scores 7V79 MainChallengeAnalysesTop April 2002 Scores

All Others Above Average

RankScoreCCName123456
30138ROMircea PopescuECACBF
30238USgaMartin NathanECACBF
30338INK.V. RanganathDCCDDF
30438USflLen RubinBECBFF
30538BGElena MitkovaECACBF
30638CAabLucas KarpiukEEFCDB
30738NLJelmer HasperDEAECF
30838ROMircea PetrescuFCABAF
30938USflJames AlgerECACBF
31038USflBetty ParkerECFFBF
31138SIJanko MijocEDACAC
31238USncLynn DillardFAAEBF
31338USflAlan KravetzCCAEBF
31438ITFranco GalleniCCCCAD
31538CAonVince OddyEEFCBF
31638USmdJerrold MillerFCFBBF
31738USilWill EngelFEACCB
31838UStxPatricia CroughDCEDDB
31938USflLee EltonDEFBBF
32038CAskHelen AndersonECACBF
32138INArindam RayDBFBDF
32238AUPhilippa BarnettDCEDBF
32338USokLinda WaggenerDBFBBE
32438UKenSonia ZakrzewskiFDACAF

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 7V79 MainChallengeAnalysesTop April 2002 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
149.8910PLPoland9
241.8045FRFrance5
341.2262TWTaiwan9
440.972UKenEngland35
540.434UKUnited Kingdom7
640.3319RORomania9
740.2946NLNetherlands17
840.2527HUHungary8
940.00114NONorway5
1039.8384USncNorth Carolina6
1139.436USilIllinois14
1239.4235USnyNew York19
1339.3825USwaWashington8
1439.2939BEBelgium7
1538.8344CAbcBritish Columbia12
1638.8273SESweden17
1738.7923INIndia33
1838.7943TRTurkey14
1938.7824USohOhio9
2038.381UScaCalifornia63
2138.177USmaMassachusetts12
2238.1428ITItaly7
2337.8032UKscScotland5
2437.7364USmdMaryland11
2536.943CAonOntario31
2636.899DEGermany9
2736.8263UStxTexas11
2836.7865CAnsNova Scotia9
2936.4498SISlovenia9
3036.4077NZNew Zealand5
3136.29106CAabAlberta7
3235.83230CAskSaskatchewan6
3335.7533AUAustralia32
3435.50180IDIndonesia6
3535.4657USflFlorida37
3634.7851USnjNew Jersey9
3734.60204USscSouth Carolina5
3833.7866ZASouth Africa9
3933.67263USpaPennsylvania9
4033.14244USgaGeorgia7
4133.00120USmnMinnesota5
4232.9072USUnited States10
4331.29433SGSingapore7

RankAverageBestCCLocationEntries
4455.008RURussia2
4546.0079THThailand1
4643.00129USndNorth Dakota1
4742.00157CApePrince Edward Island1
4841.7514HRCroatia4
4941.50132CACanada2
5041.00179CAnfNewfoundland1
5140.33121USmoMissouri3
5240.2520FIFinland4
5340.00100DKDenmark2
5440.00218USkyKentucky2
5540.00225USnhNew Hampshire1
5639.5071JPJapan2
5739.00160ATAustria2
5839.00253CAnbNew Brunswick1
5939.00257UKwaWales1
6038.7595ILIsrael4
6138.50161ISIceland2
6238.50280USokOklahoma2
6338.3376BGBulgaria3
6438.00288UKniNorthern Ireland1
6538.00296USiaIowa1
6637.50186CApqQuebec4
6737.50270CLChile2
6837.33185USdcWashington DC3
6937.0017HKHong Kong4
7037.00327CAmbManitoba1
7137.00370BWBotswana1
7236.7536CNChina4
7336.50255EEEstonia2
7436.50275PTPortugal2
7536.50365USazArizona2
7636.00379BRBrazil1
7735.67187USakAlaska3
7835.50405CZCzech Republic2
7935.25137ESSpain4
8035.25201USvaVirginia4
8135.00278USmiMichigan3
8235.00443USwiWisconsin1
8334.50193USdeDelaware2
8434.50205USmtMontana2
8534.50221UScoColorado4
8634.50444IEIreland2
8734.00299USalAlabama4
8834.00464USnvNevada1
8934.00465EGEgypt1
9034.00477USmsMississippi1
9133.00239GRGreece2
9233.00528RSSerbia1
9332.75144CHSwitzerland4
9432.00391ARArgentina2
9532.00436USorOregon2
9632.00541USctConnecticut2
9732.00554USneNebraska1
9830.00572CICote d’Ivoire2
9930.00595LVLatvia1
10027.50605USarArkansas2
10126.00671USinIndiana1

Scores 7V79 MainChallengeAnalysesTop April 2002 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 had 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.

Overall, the bots were dismal this month. In most cases (indicated as Line G) the plays chosen were not among my choices, nor even close enough to be considered essentially the same. Every Line G was clearly worse than the options offered, and in some cases so bad that it was laughable. For example, on Problem 3 (4 S contract, where a diamond ruff was necessary in dummy) one of the bots (besides HAL, hehe) played ace and another trump immediately. While most of the Line G plays deserve zero, my policy is to award the same score as the lowest of Lines A-F because the bots are not programmed for my multiple-choice format.

Congratulations to GIB, which not only won easily but also stayed on the charts with all its choices. I was especially impressed with its play of Problem 4 (the 5 D contract), executing the 100-percent endplay flawlessly. In fairness, however, I should also say that the amount of time used by GIB was far more than the others, and sometimes it was unbearably slow — this can be adjusted, of course, to play more quickly with less skill.

April 2002 Rankings
RankScoreCCProgram version123456
142USGIB 4.1.12FAAABB
233DEQ-plus Bridge 6.1FEGGED
318UKBlue Chip Bridge 3.4.3CGGGFG
418USFinesse Bridge 2.5EGGGGF
517CABridge Buff 8.0CGGGBG
615USBridge Baron 11.0GGGGDG
715JPMicro Bridge 9.01EGGGDG
813USHAL 9000GGGGGG

Participants (alphabetical)
ProgramAuthor/Creator
Blue Chip BridgeIan Trackman and Mike Whittaker
Bridge BaronTom Throop and Stephen Smith
Bridge BuffDoug Bennion
Finesse BridgeMark and Aaron Marin
GIBMatthew Ginsberg
HAL 9000Someone with a warped mind
Micro BridgeTomio and Yumiko Uchida
Q-plus BridgeHans Leber

Scores 7V79 MainChallengeAnalysesTop April 2002 Scores

© 2002 Richard Pavlicek