삼각함수 체스

Overview

The video explains the rules of a trigonometry-themed chess game, apparently designed as a student assessment activity.

Board and Setup

• The game uses a 7 × 7 board, with seven pieces per team.
• Before play, each team assigns numbers to its pieces. The subtitles indicate that the numbers must be multiples of 5 within a range that is unclear in the transcript, and that the numbers assigned to each team must sum to zero.
• Pieces are described as having four types, labeled 0, 1, 2, and 3.

Movement

Pieces have different movement options, including forward, sideways or backward, and diagonal movement. Some can move only one square, while others can travel several squares. The exact movement rules for each type are difficult to determine from the auto-generated subtitles.

One piece is described as moving diagonally while passing over an intervening square, like a chess knight. A special move can be used only once in a piece’s territory, though the subtitles do not clearly explain its precise limits.

Battles and Trigonometric Values

• When pieces meet, a battle may begin. The subtitles describe combat as occurring in certain straight-line directions, but not diagonally.
• At the start of a battle, the pieces’ hidden numbers or angles are revealed.
• One comparison uses cosine values: the piece with the smaller cosine value wins. The example states that 30° defeats 10°, consistent with this comparison.
• The winner absorbs the defeated piece’s angle or value. Depending on whether the relevant value is positive or negative, it is added to or subtracted from the winner’s total.
• If two pieces occupy the same square, both are removed.

Special Ability

A piece can use a special ability to reveal an opponent’s hidden angle, apparently only once. Using the ability also reveals something about the player’s own piece, though the subtitles do not make the details clear.

Winning and Losing

The subtitles describe winning by capturing the opponent’s pieces, with an exception involving a piece labeled 0, or by absorbing all of the opponent’s values or angles.

A player loses if they have no pieces able to move or fail to make a move within the allowed time. The time-limit wording is unclear in the transcript.

Presenter and Source

One unnamed presenter or narrator explains the game and its rules. No other speakers or external sources are clearly identifiable in the subtitles.

The presenter closes by suggesting that students play the game with teachers and says it is part of a performance assessment.