Remark: In 2020, due to the Covid-19 crisis, the Kangaroo problems were solved by the participants in very different ways. The numbers given on this page may not reflect the true participation and must be handled with care. More detailed information for a certain country may be provided by the local organizer.

Afghanistan (AF)

Albania (AL)

Argentina (AR)

Armenia (AM)

Australia (AU)

Austria (AT)

Azerbaijan (AZ)

Belarus (BY)

Belgium (BE)

Bolivia (BO)

Bosnia and Herzegovina (BA)

Brazil (BR)

Bulgaria (BG)

Canada (CA)

Catalonia (CT)

Chile (CL)

China (CN)

Colombia (CO)

Costa Rica (CR)

Croatia (HR)

Cyprus (CY)

Czech Republic (CZ)

Denmark (DK)

Dominican Republic (DO)

Ecuador (EC)

Egypt (EG)

Estonia (EE)

Finland (FI)

France (FR)

Georgia (GE)

In 2020, the member representing Georgia changed.

Germany (DE)

Ghana (GH)

Greece (GR)

Hong Kong (HK)

Hungary (HU)

India (IN)

Indonesia (ID)

In 2020, the member representing Indonesia changed.

Iran (IR)

Iraq (IQ)

Ireland (IE)

Israel (IL)

Italy (IT)

Jamaica (JM)

Kazakhstan (KZ)

Kosovo (XK)

Kyrgyzstan (KG)

Latvia (LV)

Lithuania (LT)

Malaysia (MY)

Mexico (MX)

Moldova (MD)

Mongolia (MN)

Mozambique (MZ)

Myanmar (MM)

Netherlands (NL)

New Zealand (NZ)

Nigeria (NG)

North Macedonia (MK)

Norway (NO)

Pakistan (PK)

Panama (PA)

Paraguay (PY)

Peru (PE)

In 2019, the member representing Peru changed.

Philippines (PH)

Poland (PL)

Portugal (PT)

Puerto Rico (PR)

Romania (RO)

Russia (RU)

Saudi Arabia (SA)

Serbia (RS)

Singapore (SG)

Slovakia (SK)

Slovenia (SI)

South Korea (KR)

Spain (ES)

Sweden (SE)

Switzerland (CH)

Tajikistan (TJ)

Tanzania (TZ)

Thailand (TH)

Tunisia (TN)

Turkey (TK)

Ukraine (UA)

United Arab Emirates (AE)

United Kingdom (UK)

United States (US)

Uruguay (UY)

Uzbekistan (UZ)

Venezuela (VE)

Vietnam (VN)

Zambia (ZM)