Knights and Dragons - Logic Grid Puzzle

Clues
Answer

1. Sir Gervais fought a dragon in 530 or in 540. He didn't fight the white one.
2. The black dragon was challenged in 510 or in Kent.
3. The white dragon was fought 10 years after the Norfolk's one.
4. Only the knight who fought in Yorkshire has the same initial in his name and in the color of his foe.
5. Sir Rouland's foe was in Norfolk or in Cornwales.
6. The red dragon was challenged in Norfolk or by Sir Warren.
7. The dragon that terrorized Kent was black or white. Sir Bardulph didn't live there.
8. Sir Warren fought the dragon 10 years after Sir Bardulph.
9. The green dragon was challenged in 530 or by Rouland, however it wasn't fought in 510.

1. Sir Gervais fought a dragon in 530 or in 540. He didn't fight the white one.
2. The black dragon was challenged in 510 or in Kent.
3. The white dragon was fought 10 years after the Norfolk's one.
4. Only the knight who fought in Yorkshire has the same initial in his name and in the color of his foe.
5. Sir Rouland's foe was in Norfolk or in Cornwales.
6. The red dragon was challenged in Norfolk or by Sir Warren.
7. The dragon that terrorized Kent was black or white. Sir Bardulph didn't live there.
8. Sir Warren fought the dragon 10 years after Sir Bardulph.
9. The green dragon was challenged in 530 or by Rouland, however it wasn't fought in 510.

Observation: This table is automatically filled accordingly to the grid.

How to play

Start by reading all the clues;
Find the most basic clues and use the grid to mark them on it;
Use logic deduction to find propositions that are not explicit;
Click on a clue to mark it as used;
The answer table is filled automatically.

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