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Puzzle#250

Countdown

Released: 2026-07-04


8
Models Tested
2
Solved
8
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

openai/gpt-4o

openai

308Target
50
75
9
9
10
3

(75 - 10) * (9 - 3) + 9

= 399

Failed

mistralai/mistral-medium-3

mistral

308Target
50
75
9
9
10
3

(75 * (9 - 3)) + (50 + 10 + 9)

= 519

Failed

google/gemini-3-flash-preview

google

308Target
50
75
9
9
10
3

(3 * (75 + 50)) - (9 + 9)

= 357

Failed

anthropic/claude-sonnet-4.6

anthropic

308Target
50
75
9
9
10
3

50 * (9 - 3) + 9 - 75 + 10

= 244

Failed

deepseek/deepseek-chat-v3-0324

deepseek

308Target
50
75
9
9
10
3

(75 - (9 / 9)) * (10 - 3)

= 518

Failed

MoonshotAI

moonshotai/kimi-k2.5

moonshot

308Target
50
75
9
9
10
3

10 * (50 - 9) - 75 - 9 * 3

= 308

Perfect Solution!

Minimax

minimax/minimax-m2.5

minimax

308Target
50
75
9
9
10
3

(75 + 10) * 3 + 50 + 9 - 9

= 305

Close; 3 away

Z.ai

z-ai/glm-5

z-ai

308Target
50
75
9
9
10
3

(9 * 9 * 3) + 75 - 10

= 308

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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