tournament_contest_versus_pertinent_update_effect

tournament_contest_versus_pertinent_update_effect = {
	scope:activity = {
		every_attending_character = {
			limit = {
				is_ai = no
				NOR = {
					this = scope:contest_winner
					this = scope:contest_loser
					AND = {
						exists = scope:wrathful_contestant
						this = scope:wrathful_contestant
					}
					AND = {
						exists = scope:wrathful_victim
						this = scope:wrathful_victim
					}
				}
				# First round only notify people who care
				trigger_if = {
					limit = { scope:activity.var:contest_versus_progress < 1 }
					OR = {
						# Scripted Relation
						has_any_scripted_relation = scope:contest_winner
						has_any_scripted_relation = scope:contest_loser
						# Close Family
						is_close_family_of = scope:contest_winner
						is_close_family_of = scope:contest_loser
						# Spouses
						is_consort_of = scope:contest_winner
						is_consort_of = scope:contest_loser
						# Host
						scope:host = scope:contest_winner
						scope:host = scope:contest_loser
						# Champion Liege
						court_position:champion_court_position ?= scope:contest_winner
						court_position:champion_court_position ?= scope:contest_loser
						# Knights
						any_acclaimed_knight = { this = scope:contest_winner }
						any_acclaimed_knight = { this = scope:contest_loser }
						# Intent Target
						trigger_if = {
							limit = { exists = intent_target }
							OR = {
								intent_target = scope:contest_winner
								intent_target = scope:contest_loser
							}
						}
					}
				}
			}
			trigger_event = contest_events.0810
		}
	}
}

As written in game/common/scripted_effects/04_dlc_ep2_tournament_effects.txt.