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Puzzle#866

Sudoku

Released: 2026-09-19


5
Models Tested
0
Solved
5
LLM Providers

mistralai/mistral-medium-3

mistral

Difficulty:
hard

6

5

2

3

1

8

4

7

9

4

3

1

9

7

6

2

8

5

9

8

7

4

2

5

3

6

1

1

9

4

6

5

2

7

8

3

2

6

8

7

4

5

9

1

0

3

7

5

1

3

9

6

4

2

8

4

6

5

9

4

1

2

7

7

2

3

2

6

1

8

5

4

5

1

9

8

3

7

4

9

6


openai/gpt-4o

openai

Difficulty:
hard

6

3

7

4

1

8

2

5

9

4

2

8

9

7

6

3

1

5

9

5

1

3

2

5

4

6

8

1

8

4

5

6

9

7

9

3

3

6

5

8

4

5

6

8

7

2

7

9

1

3

2

5

4

1

8

1

6

7

9

4

5

2

3

7

4

3

2

5

6

8

5

2

5

9

2

6

8

3

1

7

6


google/gemini-3-flash-preview

google

Difficulty:
hard

6

3

7

4

1

8

5

2

9

4

2

5

6

7

9

3

8

1

9

8

1

3

5

2

4

6

7

2

5

4

8

9

6

7

1

3

3

1

8

7

2

5

6

9

4

6

7

9

1

3

4

2

8

5

8

6

9

5

7

4

1

2

3

7

4

3

2

6

1

8

5

9

5

2

1

9

8

3

7

4

6


meta-llama/llama-3.3-70b-instruct

meta

Difficulty:
hard

6

5

3

4

1

8

2

7

9

4

8

9

6

7

5

1

3

2

9

2

1

8

3

6

4

5

7

3

6

4

2

5

9

7

1

8

1

7

5

3

4

2

9

6

8

8

3

2

1

6

7

5

9

4

5

9

8

7

2

4

6

3

1

2

1

6

9

8

3

7

4

5

7

4

7

5

9

1

3

2

6


deepseek/deepseek-chat-v3-0324

deepseek

Difficulty:
hard

6

2

7

4

1

8

5

3

9

4

3

6

9

7

2

1

8

5

9

5

8

3

6

1

2

6

4

1

8

4

6

9

7

7

4

3

3

6

2

8

4

5

9

1

7

5

7

9

1

3

4

6

2

8

8

1

5

7

5

4

3

2

6

7

4

3

2

6

9

8

5

1

2

9

1

5

8

3

4

7

6


Methodology Note

Each model receives the same Sudoku puzzle with a partially filled grid. Models are tasked with solving the puzzle by filling in all empty cells following Sudoku rules, and their solutions are evaluated without feedback or retries.

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