Round 54

This round's challenge:
DBAG Class 210, 215 - 218, 219 old
Electronic communication network

Round 52

This round's challenge:
Auterive
21st Genie Awards

Round 51

This round's challenge:
Boomer
Privacy preserving data mining

Round 50

This round's challenge:
Rimland
Matt Ellis (singer songwriter)

Round 49

This round's challenge:
Musical History
East Grand Rapids, Michigan

Round 48

This round's challenge:
Stephenson Blake
Aldo (1910 Automobile)

Round 47

This round's challenge:
Chena Hot Springs, Alaska
Trout Quintet

Round 46

This round's challenge:
Ⱬ
Gay & Lesbian Fund for Colorado

Round 45

This round's challenge:
Hiptage
Six Cities Design Festival

Round 44

This round's challenge:
Silbertal
Hulbert Harrington Warner

Round 43

This round's challenge:
Chaillevois
Indonesians in Japan

Round 42

This round's challenge:
1978 in New Zealand
Frank H. Buck

Round 41

This round's challenge:
The Botanical Register
Columbia Scholastic Press Association

Round 40

This round's challenge:
Resource mobilization
Martin Duffy (musician)

Round 39

This round's challenge:
Grand Béguinage, Leuven
Beyond the Graves of Passion

Round 38

This round's challenge:
Makinoella
Géraud Réveilhac

Round 37

This round's challenge:
Indian Ocean Games
Rarities 1994 - 1999

Round 36

This round's challenge:
Solar Maximum Mission
Phyllosticta carpogena

Round 35

This round's challenge:
Mount Lemmon Ski Valley
Eleemosynary (play)

Round 34

This round's challenge:
Valuyki
Fenstanton

Round 33

This round's challenge:
Culture of Luxembourg
Sisters Eagle Air Airport

Round 32

This round's challenge:
JuicyCampus
Martin Stanford

Round 31

This round's challenge:
Blatter Herbarium
Harbour Publishing

Round 30

This round's challenge:
F. R. Higgins
Psychotria glandulifera

Round 29

This round's challenge:
Robert Rosenfeld
Eden (novel)

Round 28

This round's challenge:
Helig ap Glanawg
Hugh Geoghegan

Round 27

This round's challenge:
Ian Hassall
Kūtei-kan

Round 26

This round's challenge:
Red (Guillemots album)
San Polo (church)

Round 25

This round's challenge:
Charles Petersen
Victorian Minister for Housing

Round 24

This round's challenge:
José María Reina Barrios
Osaka Municipal Central Gymnasium

Round 23

This round's challenge:
John Barrett (ice hockey)
Quebec Route 241

Round 22

This round's challenge:
Humeral circumflex artery
1892 Auburn Tigers football team

Round 20

This round's challenge:
Poecilmitis azurius
Zyrinx

Round 19

This round's challenge:
Beneckeia
Charity Navigator

Round 17

This round's challenge:
5778 Jurafrance
Francis Hong Yong-ho

Round 16

This round's challenge:
Pulajans
Morning Prayer

Round 15

This round's challenge:
Ruckus (album)
Michaelmas and Upolu Cays National Park

Round 14

This round's challenge:
Malo nas je al' nas ima
George Lawson (botanist)

Round 13

This round's challenge:
NAACP Image Award for Outstanding Supporting Actress in a Motion Picture
Landon Johnson

Round 12

This round's challenge:
Summerhill College
Hildebrand

Round 11

This round's challenge:
Shukriya: Till Death Do Us Apart
The COED Project

Round 10

This round's challenge:
Feodor Chaliapin
Langui District

Round 9

This round's challenge:
Chamber of Deputies of the Czech Republic
Fuji Golf

Round 8

This round's challenge:
Cathedral Square in Vilnius
Charles Chewings

Round 7

This round's challenge:
Walgettosuchus
Pennsville Memorial High School

Round 6

This round's challenge:
Behzad_Farahani
The_Teeth