AlephZeroChess 1 - Knightly Ideas

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Every since my personal hero made a video about chess, I’ve had a somewhat renewed interest in the game. It’s been gradually increasing too - last year on my brother’s birthday I finally made a chess.com account, and since then I’ve played a fairly modest 46 games, with most of them being Daily games. Recently, however, I’ve had the desire to program something interesting related to the game. The Game Idea I want to make an online multiplayer infinite chess game.

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Processor Consistency Sandbox

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If a system is both cache consistent and PRAM consistent, then it is also processor consistent, meaning all writes from a single process are seen in the same order by all process, and all writes to the same location are seen in the same order by all processes.

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Cache Consistency Sandbox

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Another weaker model than causal consistency is Cache Consistency. In order for a system to be Cache Consistent, every process must see every write to the same object in the same sequential order.

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Local Consistency Sandbox

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The weakest model of consistency for shared memory is local consistency, which requires only that a process observe its own operations in program order, and places no restrictions on how a process sees the operations performed by any other process.

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PRAM Consistency Sandbox

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A weaker model than causal consistency is PRAM Consistency. In order for a system to be PRAM consistent, each process must see its own operations in program order, and operations from a single source must be seen in the order they were issued.

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Causal Consistency Sandbox

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In a sequentially consistent distributed system, all processes observe all write operations in some common order. A causally consistent system has a slightly weaker guarantee - only causally related writes must be observed in a common order, and processes can disagree on the order of causally unrelated events.

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Sequential Consistency Sandbox

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A distributed system that meets the condition “the result of any execution is the same as if the operations of all processers were executed in some sequential order, and the operations of each individual process appear in this sequence in the order specified by its program” is said to be Sequentially consistent.

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