Ultimate tic-tac-toe simple rules, ultimate tic-tac-toe lacks any simple heuristic evaluation function. This function is necessary in minimax, for it determines how good a specific position is. Although elementary evaluation functions can be made for ultimate tic-tac-toe by taking into account the number of local victories, these largely overlook positional advantage that is much harder to quantify. Without any efficient evaluation function, most typical computer implementations are weak, and therefore there are few computer opponents that can consistently outplay humans. However, artificial intelligence algorithms that don't need evaluation functions, like the Monte Carlo tree-search algorithm, have no problem in playing this game.
Goodbye (The Humans song) for the final. The group performed last in the final round on 25 February 2018; lead singer Caramarcu wore a red dress hand-sewed by Romanian designer Andreea Zamfir. The Humans ultimately won the "Selecția Națională", gathering 3,277 audience votes. The Eurovision Song Contest 2018 took place at the Altice Arena in Lisbon, Portugal and consisted of two semi-finals on 8 and 10 May, and the final on 12 May 2018. According to Eurovision rules, each country, except the host country and the "Big 5" (France, Germany, Italy, Spain and the United Kingdom), is required to qualify from one of two