There is a special Arbiters Riddle in the June edition of ECU E-Magazine prepared by IA Tania Karali.
We sincerely apologize, thanks not only to the great interest and many enthusiastic responses, the author identified an inaccuracy in the riddle, which wouldn’t make any solution possible.
So below you can find new and improved version of the problem.
Here is the updated second clue:
2) A player’s game was immediately declared won by him, when he was playing on the 42nd board. This happened exactly two rounds before Bill’s incident.
Please note that also 6th clue is not published in the Magazine:
6) Steve was on board No. 11, when he asked for the arbiter’s assistance.
If you know the solution, please send it to the firstname.lastname@example.org till 20 August 2020. Among correct answers we will draw of lots a gadget connected with chess. We will publish the answers in the next edition of ECU Magazine.
The whole riddle:
In a 9-round swiss tournament five different players called the arbiter to intervene in incidents that happened during five of the rounds. Can you find who made each request, when and on which board they were playing?
The 5 rounds are:
The 5 players are:
The 5 incidents are:
first illegal move
3-fold repetition claim
disturbance by opponent
The 5 Board No. are:
- When the arbiter heard Mary’s request, he took her and her opponent away from their table. This happened two rounds after an incident occured on the 37th board.
- A player’s game was immediately declared won by him, when he was playing on the 42nd board. This happened exactly two rounds before Bill’s incident.
- During the 3rd round, someone on the 23rd board called the arbiter. The arbiter didn’t add two minutes to that player’s clock.
- During the last round, the arbiter made a remark to someone’s opponent.
- Kate called the arbiter during the 5th round. She was playing on a board with a higher number than the one on which Bill’s incident happened.
- Steve was on board No. 11, when he asked for the arbiter’s assistance.