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Puzzle#121

Countdown

Released: 2026-02-25


10
Models Tested
2
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

openai/gpt-4o

openai

833Target
25
75
100
50
7
10

(75 * 10) + 7 + 50 + (100 / 25)

= 811

Failed

Minimax

minimax/minimax-m2.5

minimax

833Target
25
75
100
50
7
10

(100 - 7) * 10 + 75

= 1005

Failed

google/gemini-3-flash-preview

google

833Target
25
75
100
50
7
10

(7 * (100 + 25)) - (50 + 75) / 10

= 862

Failed

deepseek/deepseek-chat-v3-0324

deepseek

833Target
25
75
100
50
7
10

(100 + 7) * (10 - (75 / 25))

= 749

Failed

anthropic/claude-3.7-sonnet

anthropic

833Target
25
75
100
50
7
10

((75 * 10) + 100) + (25 * 7 - 50)

= 975

Failed

x-ai/grok-3-mini-beta

x-ai

833Target
25
75
100
50
7
10

(100 * 7) + 75 + 50 + 10

= 835

Close; 2 away

MoonshotAI

moonshotai/kimi-k2.5

moonshot

833Target
25
75
100
50
7
10

7 * (75 + 50 - 10 + 100 / 25)

= 833

Perfect Solution!

mistralai/mistral-medium-3

mistral

833Target
25
75
100
50
7
10

((100 + 7) * (75 - (50 - (25 / 10))))

= 2942

Failed

google/gemini-2.0-flash-001

google

833Target
25
75
100
50
7
10

(7 * (100 + 10)) + (75 - 50)

= 795

Failed

Z.ai

z-ai/glm-5

z-ai

833Target
25
75
100
50
7
10

7 * (75 + 50 - 10 + 100 / 25)

= 833

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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