Board 7 Shirov v Yu Yangyi, is sitting next to board 8 Karjakin v Dreev.
Shirov copies Karjakin moves, Yu replies to Shirov's move
and Dreev replies to Karjakin's move with Yu Yanyi's move.
Come move 17 with the exact same position on both boards.
Karjakin plays 18.Qe5 which is not correct and is deemed a mistake.
Shirov unaware 18.Qe5 is a mistake plays it v YU Yangyi,
Yu Yangyi, replies with 18...Qh5 (18...0-0 is better) and Dreev
then plays 18...Qh5 v Karjakin. The arbiter had seen enough and
moves the players to different rooms. Karjakin won. Shirov v Yu Yangyi, drew.
Sergey Karjakin vs Alexey Dreev
Alexey Shirov vs Yu Yangyi
No need to apologise to me...ever!
It does look it was cheating but it just being silly and not premeditated.
Of course I could have elaborated:
Let's say Karjakin was aware of what was happening.
Shirov was copying his moves and when Yu Yangy made his reply, Dreev copied Yu Yangy's move and played it v Karjakin.
So Karjakin set his proxy opponent,Yu Yangy (who Dreev was copying) a trap.
Shoriv unaware he was setting a trap copied Karjakin's move.
Yu Yangy unaware he was falling into a trap made a move.
Unaware Yu Yangy had fallen into a trap Dreev copied Yu Yangy's move and played it v Karjakin.
Having trapped Dreev via Yu Yangy Kajakin called across the arbiter and the boards were split up.
Karjakin won and Shirov v Yu Yangy drew.