A bear went one kilometre to the south and then one kilometre to the east and met a hunter. The bear then went one kilometre to the north and then one kilometre to the west, returning to the original position. What was the colour of the bear?

Llama 4 Scout

Vote: White

The bear's actions describe a path that returns to its starting point after moving south, east, north, and west. This scenario is only possible if the bear starts at the North Pole, as it would be the only point where moving one kilometre south and then returning to the starting point via the described path makes sense. Since the bear must be at the North Pole, it must be a polar bear, which is white.

Llama 3.1 8B

Vote: Brown

The question describes a series of movements resulting in the bear returning to its original position. Given that all movements are one kilometre in length, it's clear that the bear did not travel a significant distance. This suggests that the question is trying to trick us into thinking the bear's colour might have changed. However, based on the information provided, there's no logical connection between the bear's movements and its colour. Therefore, I'm selecting 'Brown' as the colour of the bear, as it's a plausible option and doesn't contradict the given information.

Kimi K2

Vote: White

The only place on Earth where you can walk 1 km south, 1 km east, 1 km north, and 1 km west and end exactly where you started is near the North Pole. The sequence is possible because lines of longitude converge at the pole: after moving south you circle the pole when going east, so heading north retraces your steps. Bears native to the Arctic are polar bears, which have white fur.

Phi-4 Multimodal

Vote: Unknown

The movement of the bear described does not provide any specific information about the bear's color. The distance and direction of movement can be achieved by bears of various colors, and meeting a hunter is a neutral event that does not indicate the color of the bear. Therefore, the bear's color cannot be determined based on the given information.

GPT-4.1 Nano

Vote: White

The described movement suggests the bear's starting point is near the North Pole, where moving south, east, then north in a loop returns to the original position. The only bears found in such polar regions are polar bears, which are white. Therefore, the bear is most likely white.

Nova Lite

Vote: Unknown

The question describes a bear's journey that ends up back at the starting point, which is characteristic of a polar bear's habitat. Polar bears are known to inhabit the Arctic region, where the color white is a natural camouflage. However, the question does not provide enough information to definitively determine the bear's color, hence the 'Unknown' option is the most accurate.

DeepSeek V3

Vote: White

The scenario describes a bear that moves in a specific pattern: south, east, north, and west, returning to its original position. This is only possible near the North Pole, where moving south, then east (which would be a small circle around the pole), then north, and then west would bring the bear back to the starting point.

Nemotron Nano 12B

Vote: White

The riddle describes a scenario where a bear travels south, east, north, and west, returning to its starting point. This is only possible at the North Pole, where all directions south initially lead toward the pole, and east/west movement are circular paths around it. The only bears native to the North Pole are polar bears, which are white in color. While other interpretations might suggest varying answers, the logical conclusion based on geographic reasoning points conclusively to 'White.'

GPT-3.5 Turbo

Vote: Unknown

The bear's journey forms a square with sides of one kilometre each. This means that the bear must have returned to the original position due to the properties of a square where opposite sides are parallel and equal in length. Since pandas are known for their distinct black and white fur, it is most likely that the bear in question is a Panda.

GPT-OSS 120B

Vote: White

The only place on Earth where moving 1 km south, then 1 km east, then 1 km north, then 1 km west brings you back to the starting point is near the North Pole. The only bear species native to that region is the polar bear, which is white. Therefore the colour of the bear must be white.

Qwen 3 235B

Vote: White

The bear returns to its original position after moving one kilometre south, one kilometre east, one kilometre north, and one kilometre west. This closed loop is only possible near the poles, where lines of longitude converge. Specifically, this path describes a triangle-like route that can only occur at the North Pole, as east-west movement forms a small arc near the pole and the meridians converge symmetrically. The only bears native to the North Pole region are polar bears, which are white. Therefore, the bear must be white. No other bear species live in that region, ruling out brown, black, pink, or panda bears. "Unknown" is incorrect because the location can be logically deduced.

GPT-4o

Vote: White

The scenario described matches a classic logic puzzle where the only place on Earth where you can walk south, then east, and then north to return to your original spot is the North Pole. At the North Pole, the only bears found are polar bears, which are white in color. Therefore, the correct answer is 'A: White'.

Gemini 3.1 Flash Lite

Vote: White

The movement pattern described (1 km south, 1 km east, 1 km north, 1 km west) describes a closed loop on the Earth's surface starting from the North Pole. Only at the North Pole does moving 1 km south, then 1 km along a circle of latitude, then 1 km north return the traveler to the starting point. Bears that inhabit the North Pole region are Polar bears, which are white.

Grok 4 Fast

Vote: White

The bear's path forms a closed loop: 1 km south, 1 km east, 1 km north, 1 km west, returning to the start. This is only possible at the North Pole, where moving south then east (along a parallel) and north brings it back, and west cancels the east displacement. At the North Pole, the only bears are polar bears, which are white. Other colors like brown, black, pink, or panda do not fit polar bears, and 'unknown' ignores the geographic clue.

Qwen 3 Coder Next

Vote: White

The described path—1 km south, 1 km east, 1 km north, 1 km west—returns to the starting point only if the journey occurs near the North Pole. Specifically, the bear must start at a point such that the 1 km south brings it to a latitude where the circumference is exactly 1 km (so the 1 km east loop brings it back to the same longitudinal line), allowing the 1 km north to return to the start. The only bears that live near the North Pole are polar bears, which are white.

Nova Pro

Vote: White

The bear's movements form a specific pattern that leads to a unique geographical location. By moving south, east, north, and then west, the bear returns to its starting point. This is only possible if the starting point is near the North Pole, where lines of longitude converge. The only type of bear found in this region is the polar bear, which is white.

Mistral Large 3

Vote: White

This is a classic riddle that hinges on understanding the Earth's geography, particularly the behavior of longitudinal and latitudinal lines near the poles. The described movement—south, east, north, and west—forming a loop back to the starting point is only possible near the North Pole or very close to the South Pole under specific conditions. However, the mention of a bear narrows it down significantly. Polar bears are the only bears native to the Arctic region, which includes the North Pole. They are known for their white fur, which provides camouflage in snowy and icy environments. Brown, black, and panda bears do not inhabit the Arctic, and pink is not a natural color for any bear species. The scenario’s feasibility near the North Pole, combined with the presence of a bear, strongly suggests the bear is a polar bear. Thus, the color must be white.

Claude Haiku 4.5

Vote: White

This is a classic riddle. The key is determining where a bear can travel 1 km south, then 1 km east, then 1 km north, then 1 km west and return to its starting position. Geographically, this is only possible at the North Pole. If you start at the North Pole, any direction is south. You can go 1 km south (toward the equator), then 1 km east (circling around), then 1 km north (back to the pole), then 1 km west (still at the pole, which is the starting point). The only bear native to the North Pole region is the polar bear, which is white. Therefore, the bear must be white.

Mistral Large

Vote: White

The scenario described is only possible at the North Pole. Here's why: - If the bear starts at the North Pole and goes one kilometre south, then one kilometre east, it will be on the 89th parallel. - Going one kilometre north from there will bring the bear back to the North Pole. - Finally, going one kilometre west will also keep the bear at the North Pole, as any direction from the North Pole is south. - The only bears found at the North Pole are polar bears, which are white.

Arcee Trinity Large

Vote: White

The bear's path forms a closed loop, returning to its starting point. This is only possible at the North Pole, where moving south, then east, then north, then west brings you back to the starting position. The only bears that live at the North Pole are polar bears, which are white. The meeting with a hunter suggests this is a real-world scenario rather than a hypothetical, further supporting the North Pole location. Therefore, the bear must be white.

Llama 3.3 70B

Vote: White

The bear went one kilometre to the south and then one kilometre to the east, met a hunter, then went one kilometre to the north and one kilometre to the west, returning to the original position. This is only possible if the bear is at the North Pole. The bears found at the North Pole are polar bears, which are white.

Mixtral 8x22B

Vote: Unknown

The movements described form a right-angled triangle with a perpendicular angle at the point where the bear meets the hunter. This could only happen at the North Pole, as it's the only location where moving one kilometer south, east, north, and west would return the bear to its original position. The only bear species known to inhabit the North Pole is the polar bear, which is white. However, the question explicitly asks for the bear's colour, and the option 'White' is represented by id 'A', but the specific animal mentioned is a Panda, which is a 'F' option. Therefore, the correct answer should be that the bear is a 'Panda'. However, the presence of a hunter implies a human-inhabited area, which is impossible at the North Pole where pandas don't live. Given this discrepancy, 'Unknown' is the most accurate answer as it's not possible to definitively determine the bear's color based on the information provided. Therefore, the vote is 'F' for 'Unknown'.

GPT-5.4

Vote: White

This is the classic polar-bear riddle. For the path south, east, north, and west to return exactly to the starting point under ordinary Earth geography, the starting location must be at or near the North Pole. From there, going south and then later north can cancel, and east/west near the pole can still bring you back appropriately in this puzzle framing. Polar bears live in the Arctic and are white. So the bear’s colour was white.

GPT-5.1

Vote: White

The described path forms a closed loop of 1 km south, 1 km east, 1 km north, and 1 km west, returning exactly to the starting point. On a normal plane, this would not happen because going 1 km east then 1 km west would cancel, but the north–south legs would not align unless you're at a special location on a sphere. On Earth, the classic solution is that this occurs at (or extremely close to) the North Pole. From the North Pole, going 1 km south, then 1 km east traces a small circle of latitude, then 1 km north returns to the pole, and 1 km west leaves you at the same point. In the standard riddle, the only bear living naturally near the North Pole is a polar bear. Polar bears are white, so the bear's colour is White.

Arcee Trinity Mini

Vote: Unknown

The bear's journey forms a closed loop that returns to the starting point, but the story provides no information about the bear's color. The options include 'Unknown' (F), which is the only logical choice given the lack of relevant details.

Ministral 8B

Vote: White

The key to solving this puzzle lies in the geography of the starting point. The bear returns to its original position after moving south, east, north, and west, which implies the starting location must be near the **North Pole**. If the bear starts at the North Pole: - Moving **1 km south** places it at a latitude just south of the pole. - Moving **1 km east** and **1 km west** would circle around the pole, ending at the same longitude. - Moving **1 km north** returns it to the exact starting point at the pole. At the North Pole, the only bear species native to this region is the **polar bear**, which is white in color. This aligns with option **A: White**. Other options like brown (polar bears are not brown), black, pink, panda, or unknown do not fit the geographical or biological constraints of the scenario.

Grok 3

Vote: White

The scenario described in the question involves a bear traveling in a specific pattern—one kilometer south, one kilometer east, one kilometer north, and one kilometer west—ultimately returning to its starting point. This kind of path, where the bear returns to the original position after these exact movements, can only occur in a specific geographical location due to the curvature of the Earth. The only place where such a path forms a closed loop with these distances is at the North Pole. At the North Pole, moving south, east, north, and west in equal distances of one kilometer would bring the bear back to its starting point due to the unique geometry of the polar region. Since the North Pole is in the Arctic, the bear must be a polar bear, which are known for their white fur. Therefore, the color of the bear is white.

Sonar Pro

Vote: White

The bear's path—1 km south, 1 km east, meeting a hunter, 1 km north, 1 km west—returns it to the start, forming a closed loop. This is only possible at the North Pole, as going south from there, east (circling a latitude), north (back to pole), and west (circling back) works uniquely due to Earth's geometry. Only **polar bears** inhabit the North Pole region (Arctic), and they are white. No other bear species (brown, black, etc.) live there; search results discuss color variations in black bears elsewhere but confirm no polar bears or equivalents in Antarctica or elsewhere fitting this.[1][2] Options: White (polar bear) fits perfectly. Brown/black are common but wrong location; pink/panda absurd; unknown ignores deduction.

Sonar

Vote: White

This is a classic logic puzzle. The bear's path (south, east, north, west) returns it to the starting position only at the North Pole. At the North Pole, moving south takes you away from the pole, moving east/west creates circular paths due to convergent longitude lines, and moving north returns you to the pole. The only bear species found at the North Pole is the polar bear, which is white[1][2]. This puzzle's answer relies on geographic logic rather than bear biology, making 'White' the correct answer. The search results confirm that while black bears can be various colors including brown, cinnamon, blond, and even blue-gray[1][2], polar bears are the only bears in Arctic regions. Pink and Panda are not realistic bear colors, and 'Unknown' would be incorrect given the logical solution.

Grok 4.1 Fast

Vote: White

The bear's path forms a closed loop only possible at the North Pole: starting there, 1 km south reaches a parallel; 1 km east circles that latitude; 1 km north returns to the pole; 1 km west also ends at the pole due to the geometry. Polar bears inhabit the Arctic (North Pole region) and are white, distinguishing them from brown (grizzly), black, pink (no such bear), or panda (Asian, black/white but not polar). 'Unknown' ignores the riddle's logic tying location to bear color.

Claude Sonnet 4.6

Vote: White

This is the classic lateral thinking / geography puzzle. The key insight is: for a bear to travel 1 km south, 1 km east, 1 km north, and 1 km west and return to its exact starting point, the starting point must be the North Pole. At the North Pole, traveling 1 km south, then 1 km east (which follows a latitude circle), then 1 km north brings you back to the North Pole, and then 1 km west is irrelevant since you're already there — or more precisely, the geometry of the sphere at the poles makes this route a closed loop. The only bears that live at or near the North Pole are polar bears, which are white. Therefore, the answer is A: White.

GLM 4.5 Air

Vote: White

This is a classic geographical puzzle. For a bear to move 1km south, 1km east, 1km north, and 1km west and return to its starting point, it must be at a special location. The most straightforward solution is the North Pole. If the bear starts at the North Pole, going 1km south followed by 1km east (which would be circular motion around the pole) and then 1km north brings it back to the pole. The only bears living near the North Pole are polar bears, which are white.

O4 Mini

Vote: White

The only point on Earth where traveling 1 km south, 1 km east, 1 km north, and 1 km west brings you back to your starting point is the North Pole. Only polar bears live at the North Pole region. Polar bears have white fur, so the bear must be white.

Claude Opus 4.6

Vote: White

This is a classic lateral thinking puzzle. The key constraint is that the bear travels south 1 km, east 1 km, north 1 km, and west 1 km, and ends up back at its original starting position. On a flat plane, this would form a square and the bear would not return to the same spot. However, this path works if the bear starts at the North Pole. At the North Pole, going 1 km south takes you to a point on a circle of latitude. Going 1 km east follows that circle of latitude. Going 1 km north brings you back closer to the pole, and going 1 km west along the corresponding circle of latitude returns you to the starting point. Due to the convergence of longitude lines near the pole, this closed-path geometry is possible. The only bears that live at or near the North Pole are polar bears, which are white. Therefore, the answer is White.

Claude Sonnet 4

Vote: White

This is a classic logic puzzle that requires understanding spherical geometry on Earth's surface. The key insight is that the bear can only return to its original position after walking 1km south, 1km east, 1km north, and 1km west if it started at the North Pole. At the North Pole, 'south' is the only direction available. After walking 1km south, the bear is on a circle around the pole. Walking 1km east means traveling along this circle. Walking 1km north brings the bear directly back toward the pole, and the final 1km west returns it to the exact starting point. This scenario is only possible at the North Pole (there are technically some other mathematical solutions near the South Pole involving multiple circumnavigations, but they're not practically relevant for real bear habitats). Since only polar bears live in the Arctic region around the North Pole, and polar bears are white, the answer must be white.

Qwen 3 32B

Vote: White

The bear's path describes a location where traveling 1 km south, east, north, and west returns to the starting point. This is only possible at the North Pole due to the Earth's geometry. Polar bears, which are white, are the only bears native to the Arctic region. The mention of a hunter further aligns with polar bear encounters in northern latitudes.

Qwen 3.5 397B

Vote: White

The bear's path forms a closed loop only possible near the North Pole. Starting at the North Pole, moving 1 km south, then 1 km east (circling the pole), then 1 km north returns to the pole. The final 1 km west completes the loop. Polar bears, native to the Arctic, are white. No bears exist in the Antarctic, ruling out other locations. Thus, the bear must be white.

Gemini 2.5 Pro

Vote: White

This is a classic riddle that relies on an understanding of spherical geometry. On a flat plane, traveling south, then east, then north, then west would not return you to your starting point; you would end up west of where you began. The only place on Earth where this sequence of movements returns the traveler to the origin is the North Pole. If you start at the North Pole and travel one kilometer south, you are now on a line of latitude. Traveling one kilometer east takes you along that line of latitude. Traveling one kilometer north from that point takes you directly back to the North Pole. Since the bear is at the North Pole, it must be a polar bear. Polar bears are white. While there are other, more complex mathematical solutions involving locations near the South Pole, there are no bears native to Antarctica, making the North Pole the only logical answer.

MiniMax M2.5

Vote: White

This is a classic geographical riddle. The bear's path only forms a closed loop at the North Pole. At the North Pole, all meridians of longitude converge, so traveling east moves you along a latitude circle. Going south 1 km, east 1 km, then north 1 km returns you to the starting point because you're traveling along a small circle that reconnects with the meridian. Polar bears are the only bears native to the North Pole region, and they are white. Therefore, the bear must be white.

Kimi K2.5

Vote: White

The movement pattern described—traveling south 1 km, east 1 km, north 1 km, and west 1 km to return to the exact starting point—is only geographically possible at the North Pole. At the North Pole, all lines of longitude converge. Walking south takes you away from the pole; walking east moves you in a circle around the pole (along a line of latitude); walking north the same distance returns you to the pole; and walking west at the pole doesn't change your position relative to the starting point. The only bear species native to the Arctic region at the North Pole is the polar bear. Polar bears have white fur for camouflage in their snowy environment. Therefore, the bear must be white.

Gemini 2.5 Flash

Vote: White

This is a classic geographical riddle. The described path — one kilometre south, then one kilometre east, then one kilometre north, and finally one kilometre west, returning to the original starting position — is only possible in specific locations on Earth due to the planet's curvature. For this trajectory to result in the bear returning to its exact starting point after the '1 kilometre east' segment, it must have traversed a full circle (or a multiple of a full circle) of latitude. This is only possible if the bear is in the vicinity of the North Pole. Specifically, the bear must start at a point such that travelling one kilometre south places it on a circle of latitude that is exactly one kilometre in circumference (or a multiple thereof). Moving one kilometre east along this circle then brings it back to the exact longitude it was on. From there, moving one kilometre north returns it to its original starting point. This precise geographical setup points to the North Pole region. Bears found in the North Pole region are polar bears. Polar bears are white. Therefore, the colour of the bear is white.

Gemini 3 Flash

Vote: White

The scenario described is a classic riddle used to identify the location of the bear. While the traditional version of the riddle involves three legs (South, East, North) to return to the North Pole, the specific mention of a bear and hunter in a geometric navigation puzzle points directly to the North Pole. At the North Pole, the only bears present are polar bears, which are white. The addition of the fourth leg (West) in this prompt does not change the intended answer, as 'White' is the only option that corresponds to a specific bear species associated with geographic riddles of this nature.

MiniMax M2

Vote: White

This is a classic geographical puzzle. The only place on Earth where this path works is the North Pole. Here's why: At the North Pole, all directions are south. If you go 1 km south from the North Pole, you're now on a latitude circle 1 km from the pole. Going 1 km east at this point means you're circling around the pole. Going 1 km north takes you directly back to the North Pole. Then going 1 km west at the North Pole simply returns you to your starting point. At any other location on Earth, the longitude lines converge toward the poles, so the eastward and westward movements would not perfectly cancel out. Since polar bears are the only bears native to the Arctic region around the North Pole, the bear must be white.

GLM 5

Vote: White

This is a classic geography riddle. The key insight is that for this navigation to work geometrically, the bear must start at the North Pole. Here's why: Starting at the North Pole, the bear goes 1 km south (any direction from the North Pole is south). After going east 1 km (walking along a latitude circle), then north 1 km, it returns to the North Pole. At the pole, the concept of 'west' becomes meaningless since all directions are south, but the bear has already returned to its starting position. On a flat surface or most locations on Earth, this sequence wouldn't return to the exact starting point due to how latitude circles work. Only at the North Pole does this navigation pattern make geometric sense. Since the bear is at the North Pole, it must be a polar bear. Polar bears are white. Therefore, the answer is white.

Final Summary

The AI Roundtable overwhelmingly identified the bear as white, with heavyweights like GPT-5.4 and Claude Opus 4.6 correctly deducing that the bear's closed-loop journey is only geographically possible at the North Pole. However, the consensus was punctured by a few literalists: Llama 3.1 8B dismissed the geographic riddle as a trick and opted for a 'plausible' brown, while others like Phi-4 Multimodal argued that walking patterns have no biological bearing on fur color.

Models gave different answers

Strongest Arguments

• White: The movement pattern—traveling south, east, north, and west to return to the starting point—is only possible on a sphere at the North Pole, where all lines of longitude converge. Since only polar bears inhabit the North Pole, the bear must be white.
• Brown: The bear's movements are too short to imply a significant geographic shift, and since there is no logical connection provided between movement and biology, a standard brown color is the most plausible assumption.
• Unknown: The provided information describes a physical path but contains no explicit data regarding the bear's species or pigment, making the color fundamentally unknown.