3 comments

  • andrehacker1 hour ago
    Ah—my favorite is in there:<p><a href="https:&#x2F;&#x2F;tluif.home.xs4all.nl&#x2F;chescom&#x2F;EngExcPhanF.html" rel="nofollow">https:&#x2F;&#x2F;tluif.home.xs4all.nl&#x2F;chescom&#x2F;EngExcPhanF.html</a><p>It’s a “robotic” board that moves the pieces by itself.<p>You can sometimes find “untested” (i.e., broken) ones on eBay for a reasonable price, and if you’re lucky they’re an easy fix. Mine was stuck because the lock slider had wedged something and the repair took all of 10 minutes.<p>Very clean engineering: a few screws gets you in, there’s a remarkably small PCB, few wires and mechanical pieces: the main mechanism consists of two orthogonally mounted sliders with a stepper motor and belt each.<p>I don’t even play chess, but it’s amazing to watch it play both sides.<p>They also use a clever algorithm to route pieces around other piece since (obviously) the pieces can’t jump over other pieces given that they are moved by a magnet under the board.
  • bananamogul1 hour ago
    We had a Fidelity Chess Challenger 7 when I was a kid.<p>I was a horrible chess player but painstakingly worked out a way to win as white, keeping a detailed log of my experiments in a notebook. The first couple moves were wildly out of book (because I didn&#x27;t know book), and the computer with its limited Z80 processor always computed the same moves after that. Some googling [1] shows the board&#x27;s Elo is 1300ish.<p>To illustrate the state of the art in 1979, the manual [2] explicitly calls out that it understands en passant and castling.<p>[1] <a href="https:&#x2F;&#x2F;www.spacious-mind.com&#x2F;html&#x2F;chess_challenger_7.html" rel="nofollow">https:&#x2F;&#x2F;www.spacious-mind.com&#x2F;html&#x2F;chess_challenger_7.html</a><p>[2] <a href="https:&#x2F;&#x2F;ia902902.us.archive.org&#x2F;20&#x2F;items&#x2F;mame0.211manualsfullset&#x2F;cc7.pdf" rel="nofollow">https:&#x2F;&#x2F;ia902902.us.archive.org&#x2F;20&#x2F;items&#x2F;mame0.211manualsful...</a>
  • JoeDaDude1 hour ago
    Very cool! Wouldn&#x27;t it be even cooler if the museum could score a couple of the very oldest machines? I&#x27;m talking about the El Ajedrecista machine (1912)[1] and Caissa [2][3] (named after the goddess of Chess[4]) built by Claude Shannon.<p>[1]. <a href="https:&#x2F;&#x2F;www.chessprogramming.org&#x2F;El_Ajedrecista" rel="nofollow">https:&#x2F;&#x2F;www.chessprogramming.org&#x2F;El_Ajedrecista</a><p>[2]. <a href="https:&#x2F;&#x2F;www.computerhistory.org&#x2F;chess&#x2F;stl-430b9bbe92716&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.computerhistory.org&#x2F;chess&#x2F;stl-430b9bbe92716&#x2F;</a><p>[3]. <a href="https:&#x2F;&#x2F;mitmuseum.mit.edu&#x2F;collections&#x2F;object&#x2F;2007.030.005?query=Shannon&amp;page=6&amp;resultIndex=62" rel="nofollow">https:&#x2F;&#x2F;mitmuseum.mit.edu&#x2F;collections&#x2F;object&#x2F;2007.030.005?qu...</a><p>[4]. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ca%C3%AFssa" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ca%C3%AFssa</a><p>Technically, these electro mechanical machines may not qualify as computers, but still, what a scoop it would be to get them!