Desafíos difíciles

The idiom "like Chinese arithmetic" has been used in the past to describe something that is excessively complex, confusing, or difficult to understand. The phrase might imply that Chinese arithmetic, or the methods used in Chinese mathematics, were perceived as intricate or puzzling by those unfamiliar with them.

The idiom "be murder" is used to describe a task, situation, or experience that is extremely difficult, challenging, or unpleasant. The expression originated in the early 19th century and draws its metaphorical meaning from the act of committing murder, which is considered one of the most wicked and difficult acts to do.

The idiom "uphill battle" is originated from the physical difficulty of climbing up a steep hill, which requires extra effort and energy. This expression is used to refer to a situation where progress or success is hard to achieve due to obstacles, resistance, or unfavorable circumstances.

The idiom "Herculean task" is used to describe an extremely difficult, demanding, or challenging task. It draws its origins from Greek mythology and the legendary hero Hercules, known for his immense strength and his completion of twelve labors, which were considered nearly impossible feats.

The idiom "heavy going" is used to describe a situation, task, or material that is difficult and challenging. It originated from the literal sense of "going" or progressing with great effort and difficulty, often through rough terrain or adverse conditions.

The idiom "a tough row to hoe" originated from the agricultural practice of hoeing rows in a field to prepare the soil for planting. This expression is used to suggest that the task at hand requires considerable effort, endurance, and perseverance, just as tilling a row of soil can be physically demanding and labor-intensive.

The idiom "bite off more than someone can chew" is used to describe a situation where someone has taken on a task or responsibility that is too difficult or overwhelming for them to handle. The phrase draws from the act of taking a bite of food that is too large to chew comfortably.

The idiom "like herding cats" is used to describe a situation that is extremely difficult, chaotic, or challenging to control or manage. It originated from the notion that herding cats is an impossible task due to their independent nature and resistance to being directed or corralled.

The idiom "draft mule work" has its origins in agricultural practices. It refers to demanding tasks that were traditionally assigned to mules, which were strong and sturdy animals commonly used for pulling heavy loads, particularly in farming and construction. In this context, "draft" refers to the act of pulling or carrying a heavy load. This idiom is used metaphorically to describe heavy manual labor and tasks that require significant physical effort, often involving repetitive or monotonous actions.

The idiom "the deep end" has its origins in the world of swimming pools. It refers to the part of a pool that is furthest from the shallow or safe area, where the water is typically deeper and more challenging to navigate. The deep end is associated with greater risks and difficulties due to its depth. This expression is used to describe a situation or experience that is intense, challenging, or overwhelming.

The idiom "shoot one's bolt" originates from archery and refers to the act of shooting an arrow from a crossbow or similar weapon. In this context, "bolt" refers to the projectile or the arrow itself. This expression is used metaphorically to describe the act of expending all of one's energy, effort, or resources in a single effort or endeavor.