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Puzzle#278

Countdown

Released: 2026-08-01


7
Models Tested
3
Solved
7
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

deepseek/deepseek-chat-v3-0324

deepseek

662Target
75
4
3
1
8
8

(75 * (8 + (8 / (4 - 1)))) + 3

= 803

Failed

google/gemini-3-flash-preview

google

662Target
75
4
3
1
8
8

(8 * (75 + 8)) - (4 - 1 - 3)

= 664

Close; 2 away

mistralai/mistral-medium-3

mistral

662Target
75
4
3
1
8
8

((75 * (8 + 1)) * 8) + (4 / 3)

= 5401

Failed

openai/gpt-4o

openai

662Target
75
4
3
1
8
8

(8 * 75) + (8 * 4) + 3 + 1

= 636

Failed

Z.ai

z-ai/glm-5

z-ai

662Target
75
4
3
1
8
8

(75 + 8) * 8 - (4 - 3 + 1)

= 662

Perfect Solution!

MoonshotAI

moonshotai/kimi-k2.5

moonshot

662Target
75
4
3
1
8
8

(75 + 8) * 8 - 4 / (3 - 1)

= 662

Perfect Solution!

Minimax

minimax/minimax-m2.5

minimax

662Target
75
4
3
1
8
8

(75 + 8) * 8 - 3 + 1

= 662

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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