Clever Hans
by curley
Clever Hans lets players ask a horse a math question in chat, and the horse answers by stomping its hooves the number of times equal to the result.
What it does
Horses become a simple calculator. A player approaches a horse, says Horse in chat to get its attention, and then types a calculation such as sum 5 3, product 4 7.3, 2 power 10 or cube root 81. The horse stomps out the answer. Messages need proper capitalization and must end with an exclamation point, and the list of supported operations is given in the mod's instructions.
When the horse cannot produce a valid response, the mod reports the problem instead. Wrong numbers of arguments, an asin or acos request for a value greater than 1 or less than -1, and an unknown operation all end the attempt. Installation covers the server and each player's game. Files are published for Forge and NeoForge, for 1.20.1 and 1.21.1, and the license is All rights reserved, so the code is not open source.
Key features
Horse calculator
A horse answers calculation requests from chat by stomping out the result.
Chat-triggered questions
Saying Horse in chat near a horse draws its attention before a math problem is typed.
Supported operations
Sum, product, power and cube root are among the operations the horse will compute.
Error handling
Malformed input, wrong argument counts and out-of-range values are rejected instead of returning a wrong answer.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Playful math in survival
Players who want a quick calculation inside the game can ask a horse rather than leaving the world.
Server chat fun
Server owners can offer a horse calculator as a novelty feature for players on a shared world.
Who it’s for: Players who keep horses on their world and want a playful way to run quick arithmetic in chat, and server owners who run the mod for their community.
How it compares
Horses Can Swim is a Forge and NeoForge mod for 1.20.1 – 1.21.4 with the client and server environment, licensed under Creative Commons Attribution Non Commercial Share Alike 4.0 and not open source. Chat-ulator is a Fabric, Forge and NeoForge mod for 1.19 – 26.3 that runs client-side only under the MIT License and is not open source. Zelda Style Horse Controls covers the same Forge and NeoForge loaders and 1.20.1 – 1.21.1 range as Clever Hans, but needs both client and server, and it is All rights reserved and not open source, while Calculator is client-side only and open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Clever Hans | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-04-19 |
| Horses Can Swim | Forge and NeoForge | 1.20.1 – 1.21.4 | Client and server | 2024-12-04 |
| Chat-ulator | Fabric, Forge and NeoForge | 1.19 – 26.3 | Client-side only | 2026-09-24 |
| Zelda Style Horse Controls | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-09-09 |
| Calculator | Forge and NeoForge | 1.20 – 1.21.11 | Client-side only | 2026-02-20 |
Questions
Does Clever Hans need to be installed on both sides?
Which loaders does Clever Hans support?
Can the horse answer any calculation?
In the catalog
Clever Hans is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from curley
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What the author says
How to use the mod: - Approach a horse. - Say "Horse!" in chat to get its attention. - While you have the horse's attention, ask it a math problem. Examples: - Calculate the sum of 5 and 3! - Calculate the product of 4 and 7.3! - Calculate 2 to the power of 10! - Calculate the cube root of 81! (👀) - The horse will…
Official listing
- Modrinth page
- modrinth.com/mod/clever-hans
- Owner
- curley
- Published
- 2026-04-19
- Updated on Modrinth
- 2026-04-19
- Facts verified
- 2026-10-15