The first type of an intellectual effort let us call it a logical one. The idea is that by assumption of all possible actions of the opponent and by the estimation of all positions the player chooses the way to continue the game which can lead him to victory.
Chess players have a “tree” choice of options to choose from. The player considers all possible variants in turns and all possible answers as well. Then all hisher answers and so on. While analysing the game this way, ideally the player chooses the variant which could lead him to victory faster (the mate to the adversary king or to the damping material advantage).
The similar “tree” of choices we can also find in poker. But here the poker player analyses possible moves of the opponent, the game reaction to any action of the player and all these actions are done with a glance of possible changes of game situation as a result of emergence of next cards.
The “tree” of choices in chess is incomparably stronger and consists of far more branches than in poker. Our conclusion is that a logical intellectual effort is present in both, chess and poker, however, the role and...