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Puzzle#166

Countdown

Released: 2026-04-11


11
Models Tested
2
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

anthropic/claude-3.7-sonnet

anthropic

252Target
75
25
50
100
4
5

4 * (75 - 5 + 50 - 25 - 100)

= -20

Failed

MoonshotAI

moonshotai/kimi-k2.5

moonshot

252Target
75
25
50
100
4
5

(75 - 25) * 5 + 100 / 50

= 252

Perfect Solution!

Z.ai

z-ai/glm-5

z-ai

252Target
75
25
50
100
4
5

(75 - 25) * 5 + 100 / 50

= 252

Perfect Solution!

Minimax

minimax/minimax-m2.5

minimax

252Target
75
25
50
100
4
5

75 * 4 - 100 + 50 - 25 - 5

= 220

Failed

openai/gpt-4o

openai

252Target
75
25
50
100
4
5

((75 + 25) * 4) - 50 + 5

= 355

Failed

google/gemini-2.0-flash-001

google

252Target
75
25
50
100
4
5

(75 + 25) * (5 - 4)

= 100

Failed

deepseek/deepseek-chat-v3-0324

deepseek

252Target
75
25
50
100
4
5

((100 - 25) * 4) - (75 - 50 - 5)

= 280

Failed

x-ai/grok-3-mini-beta

x-ai

252Target
75
25
50
100
4
5

50 * 5

= 250

Close; 2 away

anthropic/claude-sonnet-4.6

anthropic

252Target
75
25
50
100
4
5

75 * 4 - 50 + 25 + 5 - 100

= 180

Failed

mistralai/mistral-medium-3

mistral

252Target
75
25
50
100
4
5

(100 + 75 + 50 + 25) * (5 - 4)

= 250

Close; 2 away

google/gemini-3-flash-preview

google

252Target
75
25
50
100
4
5

100 + (75 * (50 + 25)) / (5 * 4)

= 381

Failed

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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