Scores 8X31  MainChallenge


April 2005 Scores


Analyses by Richard Pavlicek

The “Gamebusters!” play contest had 964 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 100101201301401Location RankingBot’s Eye View

Participation Stats
Number of participants964
Number of locations110
Highest score60
Median score41
Lowest score17
Average score40.70

Top 100 Places

RankScoreLCName123456
160USctJason RotenbergCDDAAC
259HULajos LinczmayerCEDAAC
358AUBruce NeillBEDAAC
458UKwaJulian PottageBDDABC
558CAnsDel KnoxCDDBAC
657TRErgun BolekCEDBAC
757USorBarry WhiteBDDAAB
857DERainer HerrmannBDDAAB
957HUImre CsiszarCEDAAB
1056CNWuping LuCDDBAB
1156USpaSteve WhiteBEDAAB
1256USflJim TullyCADAAC
1356ILInon LiranBDDABB
1456TRSoner CubukcuBDDABB
1556BGAntonio KotsevCDDBAB
1656UKenTeymur TahseenBEDAAB
1755USmoDing-Hwa HsiehBEDEAC
1855AUDavid WiltshireBDDBAB
1955USnyGene SaxeBEDABB
2055UScoDavid CapreraBDDBAB
2155UKenVictor MilmanCDDAAE
2255USnyGerald CohenCDDEAB
2355HRDavor RaseBDDBAB
2455UScaLen VishnevskyBDDBAB
2555UKenJohn ReardonBEAAAC
2655HRMilko PravdicBDDBAB
2755UScaRob StevensBEAAAC
2855TRVolkan DenizciBDDBAB
2954BEAlon AmselBDDBBB
3054CAonGraham QuestorCDDACB
3154USndSteven ConleyCEAAAB
3254CNNing LiuCEDEAB
3354NOJohn AasanBEDBAB
3454UScaRichard RameyBDDEAB
3554CNYunxiu ZhouBEDBAB
3654TROsman OzcanBDDBBB
3754LVAigars GermanisCDDACB
3854CAabNicolae VartosuBDDEAB
3954USinDan SpainCDDAAA
4054USilJon SorkinBDDEAB
4154INSourendra Coomer DuttCDDFAB
4254USflRonald MichaelsBDDAAE
4354UKenJohn EnglandCDBAAF
4454TRErdinc ErbilBDDAAE
4554USnjBlair SeidlerBDDEAB
4654USorJohn LuskyBDDEAB
4753PLZbych BednarekBDDACB
4853USnyBarry RigalBEDEAB
4953CAonJordan CohenBADAAB
5053TROkan OzcanBEDEAB
5153ROAdrian PetculescuCADEAC
5253BGOgnian SmilianovBDDEBB
5353TWCheng Chun WeiBDDBCC
5453USmaJoon PahkBADAAB
5553AUPeter GillBEDEAB
5653UStxLarry SmithCAAAAC
5753FIJouko PaganusBEDEAB
5853UScaEric LeongCDDAFB
5953INSivakumar SalemBADBAC
6053USilCharles BlairBEDBBB
6153BGIvan KolevBDDEBB
6252ITValter BoettiBEDABE
6352USpaMark PascaleCDDACF
6452UKenRoger MortonBEDEBB
6552CAnsKok-Keong TanCDEBAC
6652NLThea MullerCDAAFC
6752USohGary SikonCDEBAC
6852HRDubravko DiklicBDDBAE
6952USmaFrench WallCDDBCB
7052CNWei Victor ZhangCDBBAF
7152UScaChristopher EarlBEDABE
7252USvaTibor KoosCDDBCB
7352UScaSteve CoopersteinCABBAC
7452USnyKeath ChenBDDECC
7552USmoThomas KniestBEDEBB
7652UScaJohn ChenBDBEAB
7752CAabDaniel BertrandCADBAB
7852CNWeidong YangBDDECC
7951NLPieter van der KleinBADACC
8051UScaSandy BarnesCADEAB
8151CNPeijie ZangCDDECB
8251UScaMichael BaianoCAAAAB
8351LBFadi FattoucheBDDBCB
8451USflJohn LiporiBBAAAC
8551USflJoseph LaneBADAAF
8651UKenAndrew RobsonBDDBCB
8751PTManuel PauloBABBAC
8851IDPika PiskantoCADEAB
8951NLEl AsserCADEAB
9051FRLaurent ThuillezCDBECC
9151USilRick KirbyADBEBC
9251CAonDale FreemanBDDEAE
9351RUAlex PerlinBEDEAF
9451AUNicoleta GiuraCADEAB
9550CAabDick YuenCDDDBB
9650USilGeorge KlemicBDDEBE
9750USlaJames PellerinCEAACB
9850AUKen DalleyCEBDAC
9950SGPoon HuaBDDDAB
10050MYTimothy Liang KanBBDBAB

Scores 8X31 MainChallengeAnalysesTop April 2005 Scores

Places 101-200

RankScoreLCName123456
10150CNRoger SunBADBBB
10250CAonJack ShinehoftBDDACE
10350BEAlan PiotrowskiBDDECB
10450USmiJoseph MountCDBFCC
10550USwaRobert GetzAAAAAC
10650HKJonathan NgCADBAF
10750USctTerry LubmanCDBACF
10850USmnTony AmesCADACB
10950NLNiels de GrootBBDEBC
11050ITMichele JarodBBDBAB
11150SIEgon NovakBDAAAA
11250ROAlexandru BanarFDBBAC
11350UScaRon LandgraffCABFAC
11450CApqMichel LalondeCEEBBC
11550UKenRoger CourtneyCEAACB
11650FRJerome RombautBEEAAB
11750USkyMax HooverADDECC
11850INKamal RoyBEDCAC
11950USflArthur HoffmanBADAAE
12050NLRinus BalkenendeBDDDAB
12150SECarsten KofoedBEDEAE
12249USwaJosh SinnettBEDDAB
12349ITFranco GalleniBFDACC
12449RSZoran RadojcicBADBCC
12549UKenJonathan MestelBEDEBE
12649AUPeter GrantBDEACC
12749UKwaAlan StephensonCDDDCC
12849UScaAllen ProhofskyAEBEAB
12949EEAllar PadariBABBAB
13049PEVladana DiazCAAACC
13149UScaMartin HertzBABBAB
13249NLGerard van DongenAEAACC
13349CNJet ChjCDDECF
13449USgaLarry GiltmanAADAAF
13549TRErcan KuruBADACB
13649USilEugene DilleBBDBBB
13749CAonPaul HardyCAAFAC
13849LVJanis DzenisCFAAAB
13949SGJunyi ZhuCDDECF
14049EGTakreem El-TanamlyCABEAB
14149USpaBrian HoldernessCAAAAF
14249USwaN. Scott CardellBDDCAB
14349CAnsKerry LaffertyADBACB
14449USilJames HudsonAADAAF
14549CNXiaoxin LuCFBEAC
14649INNeelotpal SahaiBABFAC
14749UScaJim MundayEADAAC
14848UKenJohn HallBEDACA
14948SEKalle BydenCAEBAC
15048USnyGregg DeitchCDDDAE
15148USflJohn RidenourAAAAAB
15248NOSjur BoeCDBBCF
15348NOGeir NostdahlBDDBCE
15448USnyTom BarryBDABCB
15548USmaJeffrey GertzCDDECE
15648CNJianhua AiBDDDCC
15748USmdBrad TheurerBEDCAB
15848USpaFrank AbelAAAAAB
15948CApqSebastien LachanceBEBBCB
16048CAonDavid GraingerCCDEAB
16148USnyHerb BermanCEAFAF
16248UScoJohn HolcombBABABF
16348CAabSheldon SpierCADBCB
16448USohJerry FinkFDDEBB
16548INShyam SashitalBDDEAD
16648USnyBrian MeyerCABBAF
16748TWWen-Lung HuangCDBACA
16848UScaRon JauchAABBBC
16948TWI-Don JienCDDACD
17047USilDan GoldfeinBDAADB
17147USnySeth CohenAABAAF
17247UScaTysen StreibCABEAF
17347ATHarry RopperCABEAF
17447SEJohnny JohanssonBDEEBB
17547UKenDom GoodwinAABBAB
17647NLErik StofferBBDABA
17747AUDavid MatthewsCDDDCB
17847UScaMatt MatuszewskiCDDCBF
17947TWStar ChenCDDDCB
18047HRDean PokornyBCBEAC
18147CAonPaul CrosslandCADECB
18247FIJussi TamminenBBDBAE
18347UScaBarbara JonesBBBBBB
18447USflBruce KretchmerCADFBF
18547USilJohn GoringCADDAB
18647CAonDaniel KorbelBDDDBF
18747CApqDanny KatzAABAAF
18847CNCong ZhangBDBCAB
18947PTManuel OliveiraBADEAE
19047USorJames WeiderCADBFB
19147NLFrans BuijsenCEEBAF
19247UScaDon TaylorCAAAAA
19347NLJan TesselaarBCDEAB
19447CAnsBryson CrowellCDCEAB
19547TRYavuz OvacikEDBBAB
19647INVikas PhadkeBDEACB
19747UKenDavid DaviesBADEAE
19847FRJean-Christophe ClementBADEAE
19947USmsMillie GladneyCAAACB
20047CNLiqiang HeBEEEAB

Scores 8X31 MainChallengeAnalysesTop April 2005 Scores

Places 201-300

RankScoreLCName123456
20147PLJacek ZwolinskiCADDAB
20247CNAi XiaoCAEEAC
20347TRUfuk CotukCBDEAE
20447USinDan MytelkaBADBBE
20547CAnsJim MathersBDEBCC
20647PLRoman KujaczynskiCDDCAE
20747CAnsB. Downey GroverAABBAB
20847UKenJulian WightwickBCDEAB
20946USmnDale TaylorBDEEAF
21046ILBrian ZietmanBDBAEB
21146RORadu VasilescuBEDDAE
21246USpaJerome BlumenthalBABBAE
21346INAshok DhareshwarAAAAAF
21446FIJaakko KylmalaCDEBAA
21546UKenDafydd JonesBDDDCB
21646INBonny D’LimaCBAAAA
21746UScoPaula WarrenBAAACB
21846UScaPhil PecsokFDAAAE
21946USgaDan OsburnCEABCF
22046CAbcMichael DimichBDDEFE
22146USilMicah FogelCAABBF
22246AUDavid SternDEAAAB
22346USnyKenneth HermanAABABF
22446UScaSteven HoughFDDBCB
22546DEGuenni GaulobCEEBAE
22646ROBogdan MitranDEDBBB
22746NOEspen SkarpholtBBDFAF
22846USnmErik LauerCBDFAE
22946USorStuart NewbergerAAAAAF
23046USnyMildred SimonAAAACC
23146USncOwen LienBABBAE
23246CHPedro BilarCABFCC
23346CAonFintan ChurchBAAAAA
23446BEBart DelbekeEDAAAF
23546UStxMark JacksonCCAAAF
23646UScaMichael MazurCABBCB
23746UKenCarlos DabeziesBDEEAF
23846SGLicai YeoBBBBCC
23946FIMauri SaastamoinenBADEBE
24046UScaSteve MagerCADCAB
24146BGTchavdar NikolovFDBACB
24246UScoCharles GoudeyEDEABC
24346HRZoran BohacekBADECB
24445NOHans LahneBAEBAB
24545NZFraser RewCABACE
24645CAbcLaurent CoquetCAAFAF
24745INArpan BanerjeeCADECF
24845AUInez GlangerAABACB
24945SGCharles LeongAABAAA
25045RUOleg MorozCAABCB
25145NLArnold FokAABBAF
25245UKniEmmett DavisCEEFCC
25345USflJune ByrneCCDBCB
25445CAonJoel ShapiroCAAACF
25545CAbcShirley PatersonBBBDAC
25645USflPeter MooneyCEBFCF
25745USazSue WoodardCAAFAF
25845AURobin KnightBABBCB
25945THEkasith BuasroungCCBBCC
26045UScaYumiko ReynoldsBABBCB
26145CAbcSamuel KriklerBADBCF
26245CAonKevin ConwayBADDBB
26345NLAbel WismanCDBAFD
26445USnjBrandon EinhornCAABCB
26545VECarlos GoldsteinAAAABF
26645NLThijs VeugenBCDEAF
26745INNita BanerjiAABBAF
26845TRSitki SonmezerBDBBCA
26945CApqSolange BouchardBFDEAE
27045MZPaul FauvetCABAFF
27145UKenGeraldine BrockACAAAB
27245CApqJean-Guy BeaudryAEAACF
27345USinTim DeLaneyCCDEAE
27445TRKadir Ahmet GoregeCABFBF
27545SEAnders AslundBABBCB
27645CAonDoug McAvoyCABACE
27745AUMerrelyn DalyBBBBBF
27845AUChristina BringauFBBBAC
27945AUBernard NightingaleCABACE
28045UScaDamo NairCCDEAE
28145THApisai MakmitreeCDEECB
28245USwaRoberta TarrBBAACB
28345UStxBill ErwinEEDEAF
28445AUBill HearnCCBBAF
28545USnyElaine UniversalADEFAB
28645USwaJohn GivinsAAAABF
28745ATMichael BenediktBFDBCB
28845USnyAlbert FeasleyBDDBCD
28945INGowniyan VaideeshwarBADDBB
29045UScaJoseph ChinCCBBCC
29145UKenDouglas DunnBCDEAF
29245AUBill PowellCCDACF
29344PLDarek KardasBDEEBE
29444USnvJoshua DonnDEBAAE
29544PTJorge CastanheiraCDDDCE
29644CNMichael LiuCDABFA
29744USmoShawn TateBDBDCB
29844CApqLise LapointeCADDAE
29944USokWinston MunnBDEBFB
30044PTNuno DamasoEDBECC

Scores 8X31 MainChallengeAnalysesTop April 2005 Scores

Places 301-400

RankScoreLCName123456
30144HKSing LamCEDECD
30244UKenCharlotte VineACBACC
30344TRCengiz SekerFBDAAE
30444HKPui Kong ChiuCCDECB
30544USakPhilip PallenbergADBBCE
30644USohAnton HabashCAAAFF
30744CAnsStephen TynesADEEAF
30844USmnTom RandCADBCA
30944CNMan FeiCDDCCF
31044BEPierre BoesCDBBCD
31144USdcDaniel MorganAAAAAA
31244UScaHenryk SzejnwaldCABBCF
31344AUJustin BrownAAAAAA
31444NLMonique van de SandeBADBCE
31544AUJohn FarrCABBCF
31644UKenGabriel IpBDEECB
31744USnjMichael MayerBBDBCF
31844UKenMike JamesDABAAB
31944USnjToby BaskindCAAADB
32044USflJames BunchAAAAAA
32144TRSenih InalAEBBCF
32244HRTomislav BosnjakBCDEAE
32344SGFabian TanCABBCF
32444USflPatrick ThomasCCDBDC
32544UKenMike TuckerAABBBF
32644IDSuga DiawaraBDEAEC
32744BESebastien LouveauxDDDBAA
32844UStxMike DoyleBADBCE
32944PTLuciano MachadoCABBCF
33044USorDottie AllisonCBDDCC
33144USmaAnne MillsABBBAF
33244AUHeather ScottAEEBCC
33344CLIsabel-Margarita HonoratoABBBAF
33444USflEdward SchulteBBDDBB
33544UKenFrances HindenBFDEBE
33644TRMehmet KomcuFABAAF
33744PTFernando NevesCABEDC
33844PLJulka KowalskaBDEFAE
33944TRAhmet Turan OnerAEEBCC
34044UKenDavid HodgeBEDBDE
34144USnyRobert FrickBBDACA
34244UKenDavid MorranBDEECB
34344UKenToby KenneyBABEBE
34444USwiBillie JohnsonAEAADB
34543JPMark LaForgeBBBDAB
34643BGGeorgi BachevCEADCB
34743USmaBill BraucherBADBFE
34843UScaMarvin FrenchBCEEAC
34943AUMichael SeldonBCBBAE
35043USnjDon DavignonADBBCA
35143VEMiguel FenteADCBCC
35243USnyRita SierocinskiAABACF
35343ARJorge GueglioBEEECB
35443AURon HutchisonBBEEAB
35543IDSony SasongkoCABBDB
35643TWKan-Sen ChouBAEBCC
35743UStxLarz SmithCFBBDC
35843USnhRichard BatorFDBECB
35943CApqPeter SchwartzBEADAE
36043USmaVincent HarackiewiczCABECF
36143UScaPamela FitchCBBACA
36243CNLonghai WangCDFBCB
36343GRThanos KalentzosAABFCC
36443USflAlan KravetzCAAACA
36543CAbcKeith DowdallBABACA
36643UKscSam PunchAADBCF
36743UScaRonald KowBAEACB
36843UKenGiles IpBEDDCF
36943USflBob BernhardBDDDCE
37043TRGuven DalkilicBBDECF
37143USorEthel BirnbachCABBCE
37243DEMaria WurmseerBDCACF
37343CNXiongwen GuCADCAE
37443HUJozsef SzikszaiBADDAE
37543USnjSteven ShulmanBBBDAB
37643PTAlexandre QuaresmaBEEACE
37743CAbcBeth YetmanCEAFFF
37843CAabDavid JohnsonEABBAB
37943UStxPeter HudsonAAEAAF
38043CZTomas MeclCABDCC
38143CAabDorothy MorrisonCDDEEE
38243UScaShirley StrommeCCBBCB
38343AUGeoffrey ToonEDBBCB
38443ROLuminita RaitaAABFCC
38543RUEugene MarchenkoCFDBCE
38643UKenNigel MarlowCAEECC
38743PTCarlos CabrinhaAABCAC
38843USmdJerrold MillerCABECF
38943PLWojtek UrbanBEEEBE
39043EEMeelis TiitsonDADEAB
39143USnjMaurice SilbermanEEABAF
39242BEGraham SouthgateCABDBF
39342AULyndy HickmanBCBBCB
39442USnhBruce DowningDADACB
39542USnyDaniel WildermanCACBCC
39642CAbcWilliam GroverADAFCF
39742UKwaChurchill AltemimiADEAEC
39842NLPiet DekkerFABACB
39942AUNiels KjellerupBCEACC
40042UKenJonathan de SouzaCABCCC

Scores 8X31 MainChallengeAnalysesTop April 2005 Scores

All Others Above Average

RankScoreLCName123456
40142BEEugeen VannutenADAFCF
40242INSushi NatrajCABFCF
40342UKenMark SheedyCEFACF
40442BEBram AmselFDDCCC
40542HULaszlo SztrapkovicsDADACB
40642NLJo SimonsBDBFDF
40742CDPaul InbonaFDDECE
40842USazJim KlossAABADB
40942USwaJim WiitalaEDDBCE
41042CAonDavid ColbertFADBCB
41142INBrendon TauroCACBCC
41242INShreerang JoshiCDEEDB
41342NLSean CunninghamFAEBAC
41442UKenDipak ShahCAAECF
41542UScaStephen SeagrenACBAAA
41642NOKay StrandBFBACE
41742FRJean-Pierre BlochACBBAF
41842USflNicki CaplanAAABCB
41942CNWeiqiang WangBBDECE
42042UScaJan NathanAAAEFC
42142UScaMilton SpinnerBBBBCF
42242UKenAdam SkalskiBABDAF
42342CAonJohn S. RobsonFDDEFF
42442USmaK. Scott KimballAAAACF
42542TWMing-Ta TsaiBADDCB
42642SGJulian LimBCDBCF
42742UKenColin StreetBDBFDF
42842UKenMark TaylorCBDEFE
42942USnjTina DalyBADDAA
43042CAonKaiyu QianEDEEAB
43142CHCatherine BrandtBCBBCB
43242USnjNoel KohnABBBCB
43342AUSandy McCullochABBACF
43442AUPeter TallABBBCB
43542UKscMyles EllisonBFEABF
43642BGIrina DimitrovaACAAFC
43742CAnsRosemary SampsonBAEEAF
43842CAbcDale StewartCEAFCA
43941UKenAudrey KuehBDAFDF
44041NLTjebbe WitteveenBEBECD
44141AERavi ShivramCABDCB
44241USorPaul FlashenbergCADDCF
44341UScaPaul MissoBABBCA
44441HKAnthony LeungBDBFCD
44541NLJohn van der MeijCCEACB
44641BGChavdar KochkovDADDAC
44741NZNorman Scott-MorrisonAABFCB
44841TRLeyla KezerBAEACF
44941UKenRuth ListerBABADE
45041USscRick GilesADEBCF
45141USmaDonald CaplinAAAACE
45241CAnsScott GreenoughACEBBC
45341USncJim MassonBBBBDB
45441UKenWayne MayerAEEFBF
45541USmnRichard LawsonBFDECE
45641USlaCarolyn SongyFDBDAF
45741USflHy GlantzAAAACE
45841NLHenk PippelAABACA
45941INGovind KoteeswaranABEAAE
46041PTAugusto LopesAAAAFF
46141USnyVaughan MarksCFEECC
46241UScaDan ScarolaBABBCA
46341BEPatrick FinautCABDAA
46441CAonSheila PuzABAACF
46541USazPaul ReederAFBEBF
46641UKenSteven LeeFDEECC
46741USflMarie ArmstrongCAEFBF
46841USalBen WheelerCAEECB
46941FRGilles KorngutCCDECE
47041CAbcPeter CrawleyCAEBFB
47141USmiGordon ParnesBEDDFE
47241SKStefan ChomaABDADF
47341USilJon GreimanEDEEBB
47441UStxRobert SzafranskiAEEBFB
47541TRNoyan EkiciFDDDCB
47641UScaJoe FendelBFBAFE
47741USflWilliam SlepinCAEFAE
47841UScaRoger CloughEDDDAE
47941UStxScott WansbroughABAACF
48041USnySheng LiFDDCAE
48141AUJacqui LundFAABCC
48241PTMario BebianoAAEBAF
48341BEDirk DevooghtBABECE
48441AUPaul CochraneCBBEFF
48541GRSpyros MagklarasADAADA
48641USnhLawrence CheethamBEBDCF
48741ROAndrei SecheleaBCEEAB
48841CApqAlain LacourseFDEECC
48941ESJavier CarboneroCADDCF
49041USncTim HemphillCAAFCF
49141TWLemon ChiouCDDDCD
49241USnyGerry WildenbergFADEBE

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 8X31 MainChallengeAnalysesTop April 2005 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.

RankAverageBestLCLocationEntries
147.7123HRCroatia7
246.1438CAabAlberta7
345.6010CNChina25
445.002HUHungary6
544.506TRTurkey24
644.004UKwaWales5
744.0017USmoMissouri5
843.787USorOregon9
943.7853TWTaiwan9
1043.3333NONorway9
1143.1815BGBulgaria11
1242.82105USwaWashington11
1342.67108USmnMinnesota6
1442.4547PLPoland11
1542.1824UScaCalifornia62
1642.083AUAustralia40
1742.0766NLNetherlands28
1842.0640USilIllinois17
1941.888DEGermany8
2041.6319USnyNew York30
2141.3041INIndia30
2241.25106HKHong Kong8
2341.1857FIFinland11
2441.1320UScoColorado8
2541.005CAnsNova Scotia16
2640.8916UKenEngland56
2740.8729BEBelgium15
2840.8551RORomania13
2940.83121SESweden12
3040.3390FRFrance12
3140.3156UStxTexas13
3240.001USctConnecticut7
3339.9199SGSingapore11
3439.7539USinIndiana8
3539.7554USmaMassachusetts16
3639.3830CAonOntario40
3739.33245NZNew Zealand6
3839.2011USpaPennsylvania15
3939.1013ILIsrael10
4038.9145USnjNew Jersey23
4138.8612USflFlorida50
4238.70220CAbcBritish Columbia20
4338.67157USmdMaryland6
4438.3387PTPortugal30
4538.20129EEEstonia5
4638.00257USazArizona6
4737.95114CApqQuebec20
4837.7167USohOhio14
4937.56231USncNorth Carolina9
5037.33468USalAlabama6
5137.2088IDIndonesia5
5236.80111SISlovenia5
5336.6097USlaLouisiana5
5436.38134USgaGeorgia8
5535.57366UKscScotland7
5633.60489ESSpain5

RankAverageBestLCLocationEntries
5754.0031USndNorth Dakota1
5851.0083LBLebanon1
5950.00100MYMalaysia1
6049.00130PEPeru1
6146.00173ATAustria2
6245.0037LVLatvia3
6345.0062ITItaly4
6445.00252UKniNorthern Ireland1
6545.00270MZMozambique1
6644.50124RSSerbia2
6744.2593RURussia4
6844.00294USnvNevada1
6944.00305USakAlaska1
7044.00333CLChile1
7143.00140EGEgypt2
7243.00345JPJapan1
7343.00353ARArgentina1
7442.00199USmsMississippi2
7542.00228USnmNew Mexico2
7642.00265VEVenezuela3
7742.00407CDCongo (Dem Republic)1
7841.33259THThailand3
7941.00311USdcWashington DC2
8041.00441AEUnited Arab Emirates1
8141.00472SKSlovakia1
8240.50104USmiMichigan4
8340.50380CZCzech Republic2
8440.00232CHSwitzerland3
8540.00299USokOklahoma2
8640.00344USwiWisconsin2
8740.00517KWKuwait1
8840.00546IEIreland1
8939.67518ZASouth Africa3
9039.5072USvaVirginia4
9139.00558USmeMaine1
9239.00561CAskSaskatchewan1
9339.00577CAmbManitoba1
9438.25358USnhNew Hampshire4
9536.00566USwyWyoming2
9636.00569CApePrince Edward Island2
9736.00698KRKorea (South)1
9836.00701USsdSouth Dakota1
9935.67522DKDenmark3
10035.50117USkyKentucky2
10135.00363GRGreece4
10235.00747VGVirgin Islands UK1
10334.75450USscSouth Carolina4
10434.50542UStnTennessee2
10534.00793USriRhode Island1
10633.67547USksKansas3
10733.50699GTGuatemala2
10831.00882AMArmenia1
10930.00885MXMexico1
11026.00943UYUruguay1

Scores 8X31 MainChallengeAnalysesTop April 2005 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 score, the edge goes to the one using less time. Tests are conducted on a 3.4 GHz CPU with 512 MB RAM, running Windows 98.

Congratulations to GIB (US) which surged to the fore with an impressive score of 52 — only 1 point better than archrival Jack (Netherlands). Three other bots, Micro Bridge (Japan), Bridge Baron (US) and Blue Chip Bridge (UK), also topped the average human score. Defensive play is generally the weakest area for computer bridge programs, so the respectable scores might mark the beginning of a new bot uprising. Then again, it could just be blind tin-can luck. Time will tell.

Only two of the bot choices went off the chart, and one was a viable alternative: On Problem 4, Q-plus Bridge chose to win the S K and lead the D Q without cashing the H Q first — basically leaving open the possibility for partner to gain the lead with the H 9 if necessary. Not bad, so I awarded it 5 (shown by G). The other wayward defense (shown by H on Problem 2) is unworthy of special consideration and awarded 2, same as the worst option listed.

Problem 5 was interesting in regard to the opening lead. Holding S J-10-8-7 H Q-J-7-6-5 D Q-9-2 C 5, my conditions forced a heart lead after a Stayman sequence in which declarer showed four hearts and dummy implied four spades. What would you lead? I like a heart but have no strong feelings. The bot vote: S J (3), S 7 (1), D 2 (2), C Q (1), C 5 (1). It should be no surprise which bot voted for the C Q. When I explained to HAL it didn’t hold that card, it printed out, “The most effective lead is the one least expected.” Then why not the club king, I inquired; you don’t have that card either. “Can’t!” printed HAL, “I play Rusinow.”

April 2005 Rankings
RankScoreLCProgram version123456
152USGIB 6.1.3CEBEAB
251NLJack 2.04CABEAC
347JPMicro Bridge 11.00CABEAF
446UKBlue Chip Bridge 4.2.3CABFAF
542USBridge Baron 15.0CHBBDC
636DEQ-plus Bridge 7.1FAFGAC
734CABridge Buff 11.0DFFEAC
811USHAL 9003DCFCED

Bots Tested (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 8X31 MainChallengeAnalysesTop April 2005 Scores

© 2005 Richard Pavlicek