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Chess (Mac OS X)

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Title Screen

Chess

Developer: Apple
Publisher: Apple
Platform: Mac OS X
Released internationally: June 24, 2001


DevTextIcon.png This game has hidden development-related text.
DebugIcon.png This game has debugging material.


Hmmm...
To do:
  • About 95% of sjeng.rc is commented out text. Perhaps some of it should be included.

Chess is the only game bundled with Mac OS X, aside from the Tile Game found in the Dashboard.

Debug Menu

ChessMac-DebugMenu.png

A debug menu can be enabled by setting the MBC_DEBUG environmental variable and running the app. This menu is only enabled when the variable is set, so it will not last across new sessions without the variable. An example would be the following being run in a terminal:

MBC_DEBUG=1 /Applications/Chess.app/Contents/MacOS/Chess

Unused Text

There are some interesting developer comments in bug.opn:

/* The various tags:
	!	best
	!?	interesting
	=	unusual but solid
	?!	murky - meant for surprise
	?	plain bad
*/

/* Various bad first moves - don't play these! */

a2a3?	e7e5!
a2a4?	e7e5!
b1a3?	e7e5!
b1c3?	e7e6!

/* Now, 1. b3 is an interesting and OK slow move that can be used for surprise. 1. b4 is an interesting wild move planning to put pressure on the long diagonal and hit a N on c6 with b4-b5 */

b2b3!?
b2b4?!

/* 1. c3 is too committal to be used as surprise weapon, but 1. c4 is better than it looks. 1. d3 has the same problem as 1.c3: it is likely to transpose to some slow reversed system but without giving black any head aches with move orders. */

c2c3?	e7e5!
c2c4?!	e7e5!
d2d3?	e7e5!

/* 1. d4 is a good, calm move which often leads to semi-blocked positions. I'm interested in seeing how well the program can be taught to handle those. */

d2d4=

/* 1. e3 can be used as a surprise weapon intending to make a reversed set up or something slow like Ng1-f3 and b2-b3. */

e2e3?!	e7e5!

/* 1. e4! Best by test! */

/* Queen's fianchetto */

e2e4	b7b6?!	d2d4!

/* Queen's knight - most likely to transpose */

e2e4	b8c6=

/* C-line crap lines */

e2e4	c7c5?	b1c3!
e2e4	c7c6?	d2d4!	d7d5	e4d5	c6d5	c1f4

/* The leaf - God I hate this shitty line. */

e2e4	d7d5?

/* 1... d6 - transposing to the Wall most likely, but also some independant lines. */

e2e4	d7d6=

/* I would expect the program to handle the tactics in the Kamikaze pretty well. */

e2e4	e7e5!?

/* On with the main bulk of opening theory. */

e2e4	e7e6!

/* The Dog will suit the computer well. */

e2e4	g8f6!

/* 1. f3 is simply bad but 1.f4 is a whole lot better than it looks - an interesting surprise weapon maybe. */

f2f3?	e7e5!
f2f4?!	g8f6!

/* 1. Nf3 is a good second string first move along with 1. d4. */

g1f3=

/* The rest is just crap. */

g1h3?	e7e5!
g2g3?	e7e5!
g2g4?	e7e5!
h2h3?	e7e5!
h2h4?	e7e5!	h4h5	d7d5	P@g6	h7g6	h5g6	h8h1	g6f7	e8f7