Scores 7V47 MainChallenge


August 2001 Scores


Analyses by Richard Pavlicek

The “Dog Days of Summer” play contest had 327 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 100101Location RankingBot’s Eye View

Number of participants327
Number of locations83
Highest score59
Median score42
Lowest score22
Average score41.88

Top 100

RankScoreCCName123456
159PLWojtek SiwiecBACCCF
259INPrakasam NarasimhanBACFCE
358UKenMichael ClarkBDCCCF
458RORadu MihaiBECCCE
558USnyMicki KaufmanBDCFCE
658UScaRob StevensBECCCE
757UKenJohn ReardonBECFCE
857CAonMalcolm EwashkiwCDCCCF
957CAonGabriel Nita-SagunaBDCFCF
1056UScaStephen TuCAEFCE
1156UKenMichael ScanlonBDECCF
1256ILYoram BavliBDEFCE
1356HKWalter LeeCDCCAE
1455UKenNeil MorgensternDAECCE
1555USnjLeonard HelfgottDAECCE
1655USwaN. Scott CardellBDEDCE
1755PTManuel PauloDECCCE
1855USmaJonathan WeinsteinCAAFCE
1955HRTonci TomicCACCCD
2055UKenGareth BirdsallAACCCE
2155USpaSteve WhiteDAECCE
2254USalBob SimkinsDDECCE
2354ZASid IsmailCDACCF
2454USilCharles BlairDDCDCE
2554EEAivar TihaneDAEFCE
2653UStxHerbert WiltonDAEFCF
2753CApqMichael KanigsbergBAEFCD
2853UScaAnne BellDDCFAE
2953UKscMartin KaneBDECDF
3053HKTommy ChoBAEFCD
3153CAonDoug SmythBAEFBE
3253TRHasan GedikAACCAE
3353INVenkatesh RamaratnamDDEFCE
3453UScaGrant PeacockCBCFCE
3552USilGeorge KlemicAAEFCE
3652INGovindarajan SrinivasanAAECCF
3752RSBranko VlajnicDAAFCF
3852AUBill HearnBBCDCF
3952CAbcDavid BretonBBEFCE
4052RUAlex PerlinDACDDE
4151NLFrans BuijsenADECCF
4251CAabDick YuenAEECCE
4351UScaJeff GoldsmithDAAFAE
4451ESRaimon TatxeDEEFCF
4551IEColin SmithAAEFCF
4651UKscNigel GuthrieDADFCE
4751EGAndrew de SosaDACDCD
4850FRRon TacchiAAECDE
4950UScaMichael DayEDEFCE
5050INGowniyan VaideeshwarAEEFCE
5150USnyFranco BaseggioFDCCAE
5250AUNiclas JonssonAECCDE
5350IDDidik KoesbiantoAEEFCE
5450NOKay StrandEDECCF
5550AUBill JacobsDAEFDF
5650RULeonid UlanovskyFACFAE
5750CAbcBrad BartDBECCE
5850USilJames HudsonEAAFCE
5949USvaLarry KahnAAEFDE
6049CAonSheila McDonaldCECCBD
6149DERainer HerrmannFAACCF
6249USmaDarrell GibsonDAFFCE
6349USmaBob BoudreauCAFFAE
6449USakRick KellyEDCFDE
6548ITGiovanni BobbioFDEDCE
6648USohMark RishavyDAECFE
6748UKenDouglas DunnFDEFCF
6848INSatyabrata LahiriEADFCE
6947SERobert LarssonAEDFCE
7047UScaBill CubleyADEFCD
7147DEUlrich VoigtDAFCDE
7247CApqPeter SchwartzDDECCA
7347USDave ScottDDEFCB
7447SERoger KarlssonEBCFCF
7547CLConstantino SifaquiEEECDE
7647USmnBrian WeikleEDCCCB
7747AUArian LasockiAADCDE
7847IDNoer Imanzal KartamadjanaABCCDE
7947NLWim van RoonEAFCCE
8047INSivakumar SalemAEDFCE
8147CAbcRoss LamFAECBE
8247SGGary AngADCFCB
8347UKenJonathan JacobsEDCFBF
8447HUGyula ArgayFDEFAE
8547FRMichel MayeurEDECDF
8647AUSartaj HansDBECDE
8746USnyBarry RigalBBDCCD
8846AUBill PowellFEAFCF
8946CApqDiane MongeauBEECBB
9046FIErkki MalkamakiDAAEDE
9146CAnsBryson CrowellFAEDDE
9246UKniRobin BurnsFAAFDE
9346USilWalt SchaferADDFAE
9446USRalph KuhlmanFEECDE
9546USvaRick BinghamEAFFCE
9646FRJacques NormandEDFCCE
9746USflFitzhugh O’NeillBEACEE
9846SEDick AnderssonACECCF
9946IDDayle GilliattFBCCAE
10046RUAnton EvseevFEDCCE

Scores 7V47 MainChallengeAnalysesTop August 2001 Scores

All Others Above Average

RankScoreCCName123456
10146INAnil UpadhyayAEEFBE
10246HUBernadette MagyarDBAFAE
10346USnjDirk EnthovenEEACAF
10445NLDale RudrumDEECFF
10545TRCengiz OncuEBACCF
10645TRTurgay UrlaEBACCF
10745TWZeno LinDEEACF
10845NOIdar PedersenAEECCB
10945FIMikko SarelaAEECCB
11045UKenStephen DownBBACCA
11145USmdPete JacksonEADCCD
11245USmaVincent HarackiewiczADECFE
11345INArvind RanasariaFDFCCE
11444USwaJosh SinnettEBECDE
11544UScaSandy BarnesFAEFCB
11644NLRosalind HengeveldFAEFCB
11744ROBogdan VulcanEECCBD
11844USokLinda WaggenerEEEFBF
11944UScaPhil ClaytonAAEDFE
12044UKenDavid LeveneEBCCBF
12144USohCraig SatersmoenDCEDAF
12244ROCristian GuideaEEECCB
12344USmnKathleen WetterstromADECAB
12444BRMarcos PaivaEDCEBE
12544CAonJerry SmeeBBDCCB
12644INS.T. ArasuFBAFCE
12744CAonMihai ValcuEBECDE
12844HRVedran ZoricFBECAE
12944TWChen Jye ChwuABECCD
13043USilDonald LinkEEEFCB
13143UScaJojo SarkarFDECDD
13243PTCarlos SantosEEDCCD
13343CAnsBrian HansenACEFAF
13443ILHillel RosenACECCD
13543UScaBetsy MarcusADDCCB
13643SIEgon NovakACECCD
13743USvaDarwin AfdahlADECEE
13843CAonDaniel KorbelDACADD
13943USflLois BlumeAEEFDD
14043USnyJack PresserEECFFF
14143USmoBill FinkenstadtEECCDB
14243UStxBrian BareschEDDFCD
14343USscRick GilesABCCDD
14443USilWill EngelFDFDCE
14543CAabDavid JohnsonEECCDB
14643USalCurtis LoftisACCCCB
14743TWHang ChangFDECDD
14843ITStefano BiciocchiDBECCA
14943UKenSonia ZakrzewskiACECCD
15043CAonJohn CunninghamDBCFBD
15143INSourendra Coomer DuttEEEFCB
15243DEZuzana HerrmannADEECD
15343BELuc SegersADECDB
15443AUDennis YovichEECEDF
15543PLMichal NowakBAEEDA
15643TRDogan GokbelECDCCE
15742CAnsGerald MurphyEFCDAE
15842RORadu BlejeruADECDA
15942UScaMilton SpinnerAADCAB
16042CAnsKok-Keong TanABECCB
16142AUMargaret LindgrenABCFCA
16242UKscTim McKayEBDDCE
16342ARRaul MartinoEEDCBF
16442UKAndrew WillisEAEADE
16542CNWeidong YangFAEFFF
16642INArpan BanerjeeBBECDC
16742UScaMarina FomenkovaECECBE
16842USmdJerrold MillerAECADF
16942USmtBruce CookDFCCFE
17042USflRobert MarkleyEEEFFE
17142USflMarcia GreensteinDBDFBE

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 7V47 MainChallengeAnalysesTop August 2001 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
147.8018USmaMassachusetts5
245.204RORomania5
344.2224USilIllinois9
443.372INIndia19
543.0029UKscScotland5
642.8538AUAustralia13
742.8012ILIsrael5
842.356UScaCalifornia23
942.255USnyNew York8
1042.208CAonOntario15
1141.483UKenEngland23
1241.33107TWTaiwan6
1341.2539CAbcBritish Columbia8
1441.2026UStxTexas5
1540.7169SESweden7
1640.1441NLNetherlands7
1739.3891CAnsNova Scotia8
1838.3897USflFlorida13
1938.1165ITItaly9

RankAverageBestCCLocationEntries
2055.0021USpaPennsylvania1
2154.5013HKHong Kong2
2251.001PLPoland2
2351.0047EGEgypt1
2449.3340RURussia3
2549.0064USakAlaska1
2648.5022USalAlabama2
2747.6753IDIndonesia3
2847.5054NONorway2
2947.0015USnjNew Jersey3
3047.0025EEEstonia2
3147.0075CLChile1
3247.0082SGSingapore1
3346.7527CApqQuebec4
3446.5032TRTurkey4
3546.5084HUHungary2
3646.0059USvaVirginia3
3746.0092UKniNorthern Ireland1
3845.5076USmnMinnesota2
3945.5090FIFinland2
4045.0044ESSpain2
4144.0037RSSerbia2
4244.00118USokOklahoma1
4344.00124BRBrazil1
4443.7548FRFrance4
4543.6717PTPortugal3
4643.0073USUnited States3
4742.6766USohOhio3
4842.00141USmoMissouri2
4942.00164UKUnited Kingdom1
5042.00165CNChina1
5142.00169USmtMontana1
5241.2519HRCroatia4
5341.2523ZASouth Africa4
5441.00143USscSouth Carolina2
5541.00173USneNebraska1
5640.7516USwaWashington4
5740.2561DEGermany4
5840.00185USnvNevada1
5939.00176GRGreece3
6039.00200JPJapan1
6138.5042CAabAlberta4
6238.5045IEIreland4
6338.50153BEBelgium2
6438.00111USmdMaryland3
6538.00214USgaGeorgia1
6637.67163ARArgentina3
6737.50136SISlovenia4
6837.50216CACanada2
6937.00236CAmbManitoba1
7037.00237UScoColorado1
7137.00238USnhNew Hampshire1
7237.00241MTMalta1
7337.00246CAskSaskatchewan1
7436.00266UStnTennessee1
7535.67219USncNorth Carolina3
7635.00202USinIndiana2
7734.50257USazArizona2
7834.00235NZNew Zealand2
7933.50221UKwaWales2
8033.00290USorOregon1
8132.00300CHSwitzerland1
8228.00319USarArkansas1
8325.00325CYCyprus1

Scores 7V47 MainChallengeAnalysesTop August 2001 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.

In many cases a bot’s actual line of play did not match any of the choices. If the play was effectively the same as Line A-F (e.g., a transposition of plays), that choice was credited, however, if the line was considerably off base (i.e., worse than any of the options) I indicated this by the letter G. For scoring purposes, “Line G” counts the same as the lowest of Line A-F (it wouldn’t be fair to score it zero because the bot would have guessed if it understood the multiple-choice format).

Congratulations to Bridge Buff for a stunning performance, and the only bot to break average. The usual card-play champ GIB had an off month, though it still managed to grab second place. Overall, however, the bot performances were unimpressive and, in a few cases, egregious, such as drawing three rounds of trumps on Problem 5. The consistency award goes to HAL — its steady play gave a whole new meaning to the word “G-string.”

August 2001 Rankings
RankScoreCCProgram version123456
149CABridge Buff 8.0AEACCF
235USGIB 4.1.12AECGGE
332UKBlue Chip Bridge 3.4.3AEEGBB
428DEQ-plus Bridge 6.1AGAGCA
518USFinesse Bridge 2.5GBDGGA
616USBridge Baron 11.0GGAGGG
713JPMicro Bridge 9.01EGBAGG
810USHAL 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 7V47 MainChallengeAnalysesTop August 2001 Scores

© 2001 Richard Pavlicek