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Puzzle#280

Countdown

Released: 2026-08-03


7
Models Tested
2
Solved
7
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

openai/gpt-4o

openai

320Target
25
100
6
5
8
5

(25 * 8) + (5 * 6)

= 230

Failed

google/gemini-3-flash-preview

google

320Target
25
100
6
5
8
5

(100 * (8 + 5 + 5)) / 6 + 25

= 325

Close; 5 away

mistralai/mistral-medium-3

mistral

320Target
25
100
6
5
8
5

(100 + 25) * (8 - (5 / 5))

= 875

Failed

deepseek/deepseek-chat-v3-0324

deepseek

320Target
25
100
6
5
8
5

(100 + (25 - 5)) * 8

= 960

Failed

Minimax

minimax/minimax-m2.5

minimax

320Target
25
100
6
5
8
5

25 * (8 + 5) - 5

= 320

Perfect Solution!

MoonshotAI

moonshotai/kimi-k2.5

moonshot

320Target
25
100
6
5
8
5

(25 - 5) * (8 + 5) + 100 - 6

= 354

Failed

Z.ai

z-ai/glm-5

z-ai

320Target
25
100
6
5
8
5

8 * (25 + 100 / 5 - 5)

= 320

Perfect Solution!

Methodology Note

Each model receives the same prompt with the numbers to use. Models are tasked with creating an expression using only arithmetic operations to reach the target number. Each number can only be used once and you do not have to use all the numbers. Their answers are evaluated without feedback or retries.

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