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The movement of the pieces represents work. The application of force (hand) across a distance (board). In the case of chemistry: pressure and volume.

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A State Function does not take into account the path a process goes in, only the initial and final state. In chess, it doesn't matter how the game goes, you either win or lose.

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The change in internal energy (Delta E) is the heat applied to the system + the work done on or by the system. In chess, the heat is the way you move a specific piece and your hand movement is the work done on the system.

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While heat is the way an object is moved, enthalpy is the direct change from initial to final position (being a state function). Change in enthalpy more accurately describes the heat energy within a system and allows for more conventional calculuations.

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Entropy represents disorder. Entropy in chess is the chaotic element or how disorderly the position of a board is. A position can be organized and stale or disorganized and exciting.

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A chess game between two GM with an evaluation bar highlighted.

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Gibbs Free Energy is a representation of the spontaneity of a reaction based on the free energy within a system. Free energy is calculated by the enthalpy - temperature*entropy. In chess, entropy is the AI evaluation of who's winning.

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Energy cannot be created or destroyed, only transferred. The energy of the universe is conserved. In chess, the kings are pieces that cannot be created nor destroyed.

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The entropy of the universe will always increase over time. As there are more possible unorganized chess positions than organized ones, the entropy of a game played with random moves will tend to a maximum.

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An absolute entropy of zero comes from a perfect crystal at absolute zero where absolute entropy is energy from the dispersion of molecules. In chess, the London System opening is renowned for creating a closed (or low entropy) position.

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A system is a focused, "zoomed-in" section of the surroundings. In chess, there are many systems that one can focus on, and everything not in that system is the surroundings. (Ex. checkmate of a king typically involves a system where the surroundings are incapable of stopping it.) Though, a system and its surroundings are in constant exchange.

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A reversible process is one where the entropy change of the universe is zero. The entropy change of a system is opposite and equal to the entropy change of its surroundings in reversible processes. Irreversible processes are those where this does not stand true (spontaneous processes). In chess, a check on the king will tend to be reversible while a checkmate is not.

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Spontaneous reactions take place without energy being put in while non-spontaneous reactions require energy to occur. Positive free energy is non-spontaneous, zero is at equilibrium, and negative is spontaneous. In chess, a checkmate with the fools gambit does not require effort to win, making it spontaneous. A more challenging game with difficult moves would be non-spontaneous.

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Enthalpy, Entropy, and Gibbs Free Energy

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Enthalpy, Entropy, and Gibbs Free Energy

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Gibbs Free Energy, which determines spontaneity, is determined by the relationship between enthalpy, temperature, and entropy.

ΔG° = ΔH° - TΔS°