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Puzzle#154

Countdown

Released: 2026-03-30


11
Models Tested
6
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

anthropic/claude-sonnet-4.6

anthropic

400Target
50
25
9
6
4
9

50 * (9 - 4) + 25 * 6

= 400

Perfect Solution!

google/gemini-2.0-flash-001

google

400Target
50
25
9
6
4
9

(50 * 9) - (25 + 9 + 6)

= 410

Failed

Minimax

minimax/minimax-m2.5

minimax

400Target
50
25
9
6
4
9

50 * 6 + 25 * 4

= 400

Perfect Solution!

deepseek/deepseek-chat-v3-0324

deepseek

400Target
50
25
9
6
4
9

(50 * (9 - (9 / (6 + 4)))) + 25

= 430

Failed

x-ai/grok-3-mini-beta

x-ai

400Target
50
25
9
6
4
9

((50 - 6) * 9) + 4

= 400

Perfect Solution!

Z.ai

z-ai/glm-5

z-ai

400Target
50
25
9
6
4
9

50 * ((25 - 9) / (6 - 4))

= 400

Perfect Solution!

MoonshotAI

moonshotai/kimi-k2.5

moonshot

400Target
50
25
9
6
4
9

(6 * 50) + (25 * 4)

= 400

Perfect Solution!

google/gemini-3-flash-preview

google

400Target
50
25
9
6
4
9

(50 + 25) * 6 - (4 * 9 + 9)

= 405

Close; 5 away

anthropic/claude-3.7-sonnet

anthropic

400Target
50
25
9
6
4
9

50 * (9 - 4) + 25 * 6

= 400

Perfect Solution!

mistralai/mistral-medium-3

mistral

400Target
50
25
9
6
4
9

(50 - (9 / 9)) * (6 + 4)

= 490

Failed

openai/gpt-4o

openai

400Target
50
25
9
6
4
9

(50 * 9) - (25 + 6 + 9)

= 410

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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