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Puzzle#178

Countdown

Released: 2026-04-23


11
Models Tested
3
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

mistralai/mistral-medium-3

mistral

119Target
25
10
2
10
10
5

(25 * 5) - (10 / (10 - (10 / 2)))

= 123

Close; 4 away

MoonshotAI

moonshotai/kimi-k2.5

moonshot

119Target
25
10
2
10
10
5

(10 * 10) + (25 - 5) - (2 / 10)

= 119

Perfect Solution!

anthropic/claude-3.7-sonnet

anthropic

119Target
25
10
2
10
10
5

10 * 10 + 25 - 5 - 2 + 10

= 128

Failed

anthropic/claude-sonnet-4.6

anthropic

119Target
25
10
2
10
10
5

((25 * 5) - 10) * 2 - 10 + 10

= 230

Failed

deepseek/deepseek-chat-v3-0324

deepseek

119Target
25
10
2
10
10
5

(25 * 5) - (10 + 10 - 10 - 2)

= 117

Close; 2 away

Z.ai

z-ai/glm-5

z-ai

119Target
25
10
2
10
10
5

25 * 5 - (10 / 2 + 10 / 10)

= 119

Perfect Solution!

Minimax

minimax/minimax-m2.5

minimax

119Target
25
10
2
10
10
5

25 * 5 + 10/10 - 10

= 116

Close; 3 away

x-ai/grok-3-mini-beta

x-ai

119Target
25
10
2
10
10
5

(25 * 5) - (10 / 2) - (10 / 10)

= 119

Perfect Solution!

openai/gpt-4o

openai

119Target
25
10
2
10
10
5

((25 * 5) - 10) - (10 / 2)

= 110

Failed

google/gemini-2.0-flash-001

google

119Target
25
10
2
10
10
5

(10 + 2) * 10 - 5

= 115

Close; 4 away

google/gemini-3-flash-preview

google

119Target
25
10
2
10
10
5

(10 * 10) + 25 - (10 / 2) + 5

= 125

Close; 6 away

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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