Green, yellow and red: reading pan-African flags
Green, yellow (or gold) and red are the colours of Ethiopia's flag, and Ethiopia's long history as an independent state made them a symbol of African independence. When Ghana became independent in 1957 it chose the same three colours, and many countries that followed did the same. Others adopted the red, black and green associated with the pan-African movement in the Americas, and some combined the two.
The result is a large family of flags that share a palette. For The Flag Slice, that makes them some of the hardest pies to tell apart, and some of the most satisfying once you know what to look for. The key is almost always the small slice: the star, the band or the emblem that one flag has and its neighbours do not.
The equal thirds: Mali, Guinea, Senegal and friends
Mali and Guinea are both three vertical bands of green, yellow and red; Guinea runs them the other way. Senegal is the same with a small green star on its yellow band. Measured, all three come out as a third green, a third yellow and a third red, shown as 34/33/33 because whole percentages cannot split exactly into thirds. Senegal's star is too small to change the result.
They are not alone. The Republic of the Congo, Bolivia and Lithuania measure the same, even though Lithuania's yellow, green and red bands are horizontal and the country is in northern Europe. A pie cannot see direction or geography. In the game's data, sixteen flags share this exact pie.
Because the group is so large, The Flag Slice only ever schedules one of them: Lithuania, the best-known flag in the group. If an equal green, yellow and red pie appears, any of the sixteen is accepted, and the reveal lists the rest.
The small slices that make a flag unique
Most pan-African flags avoid that trap through one extra colour or a change in proportions. These are the pies to learn:
| Flag | Pie | What the extra detail is |
|---|---|---|
| Ghana | Green 33, Red 33, Yellow 31, Black 3 | The black star in the centre |
| Guinea-Bissau | Green 33, Yellow 33, Red 32, Black 2 | The black star on the red band |
| Ethiopia | Green 30, Red 30, Yellow 25, Blue 15 | The blue disc and emblem |
| Togo | Green 45, Yellow 32, Red 20, White 3 | Five stripes, a red canton and a white star |
| Benin | Green 40, Red 30, Yellow 30 | A wide green band at the hoist |
| Burkina Faso | Green 49, Red 49, Yellow 2 | Red and green halves, a yellow star |
Notice how much a 2–3% slice matters. Ghana and Guinea-Bissau have almost identical pies, both near equal thirds with a little black. Both blacks are stars. The difference is in the numbers: Ghana's yellow is slightly reduced (31) because its star sits on the yellow band, while Guinea-Bissau's red is reduced because its star sits on the red. That level of detail is exactly what a hard puzzle tests.
Benin and Burkina Faso show the other trick: uneven proportions. Benin's pie has no tiny slice at all, but 40/30/30 can only come from bands of different sizes. Burkina Faso is two equal halves, which is why red and green each take 49%, with a small yellow star.
Black, red and green
The second branch of the family uses black, red and green, often with white or yellow:
- Kenya: Black 30, Red 30, Green 29, White 11. The white comes from the thin borders between the bands and the shield in the centre.
- Malawi and South Sudan share the black, red and green bands. South Sudan adds a blue triangle, white borders and a yellow star, which makes it one of only two country flags with six slices: Black 26, Green 26, Light blue 20, Red 19, White 8, Yellow 1.
- Uganda: Yellow 34, Black 31, Red 31, White 4. Six horizontal stripes and a white disc.
- Tanzania: Black 30, Blue 29, Green 29, Yellow 12. A diagonal black band with yellow borders.
When you see a pie with black at around 30% alongside red and green, think East Africa first.
Pies with a twist
A few flags in the region use colours that are rare elsewhere, and they are gifts when they appear:
- Cameroon: Yellow 35, Teal 33, Red 32. Its green measures as Teal, an unusual name that cuts the options sharply.
- Mozambique: Yellow 29, Teal 27, Black 21, Red 18, White 5. Five colours, two of them unusual.
- Zambia: Green 74, Orange 10, Black 8, Red 8. A green field with a block of three stripes and an eagle in the fly. Orange is rare enough to be a clue on its own.
- Zimbabwe: Green 27, Yellow 25, Red 23, White 13, Black 12. Seven stripes plus a white triangle.
- South Africa: Green 31, Dark blue 21, Red 21, White 12, Black 9, Yellow 6. The other six-slice country flag, and the only one with dark blue among these.
Jamaica: the same colours, a different story
Jamaica's flag is green, black and gold, divided by a gold diagonal cross. Its pie, Yellow 34, Black 33, Green 33, looks like a pan-African flag, but the colours have their own meaning in Jamaica's history. It is a reminder that a pie only tells you about proportions. The layout hint ("Diagonal or irregular shapes, not simple bands") is the quickest way to separate it from banded flags with similar palettes.
A quick method for this family
- Is there black, and how much? None suggests the Ethiopian-style tricolours; a thin slice is usually a star; around 30% suggests East Africa.
- Are the three main colours equal? True thirds mean a large shared group. Uneven numbers point to a specific flag.
- Which colour is reduced? A star or emblem takes its share from the band it sits on.
- Is there a rare colour? Teal, Orange or Dark blue shrinks the list to one or two flags.