jack: (Default)
I was flicking through, on top of the pile of books to give away, a Gor book. Amongst many other peccadillos it describes a chess variant. My original thought had been that it was so stupid, obviously chess with a few ill-thought out extra rules tacked on that are totally incompatible. Okay, that's still what I think, but having experimented with penultima, I'm going to admit it's *possible*.

The key characteristics described:

* A slightly larger board and slightly larger number of pieces

Perfectly reasonable. Unnecessary, in my opinion, to make it more impressive, more complicated interactions would sound better, it's not like chess is "solved", but perfectly reasonable.

* The king-equivalent piece, and some others, are placed on the board within the first n moves.

* Weaker opponents playing experts often claim advantages, eg. handicapping the expert by several pieces.

Yes, that works. It's a lot harder to calibrate than in go, where it works well: missing a queen is a decisive disadvantage. On the other hand, good players can certainly beat me starting from behind. I suspect most of the time one or other would still have a notable advantage in the game. But it's possible.

* In the game described, the expert appears to be losing, makes three random moves, which ultimately reveal a "check", allowing a minor piece to take the king-equivalent piece on the last move, one move before the other player would have won.

That's a reasonable description of an expert winning against a weaker player in an apparently strong position. It didn't ring true to me, though. At first, I missed what they were describing. But even after, I know how easy it is to fall into fool's mate or similar, but with more of the pieces clear of the board, and examining the meaning of an apparently bizarre move, you think you could easily examine every piece.

My current rationale is that the pieces interact in some way, so that the minor piece was unusually strong (a vague description along these lines was made, but not clear if it meant only used in conjunction with, or it actually altered how the piece can move), eg. its move depends on the configuration of others, so the weaker player forgot that it might be able to move like that.

I don't think that was in the mind of the author, but it's consistent.

* A weaker player is often given an advantage, to move thrice in succession once in the game.

This just sounded mad. The king-equivalent piece was described as "captured", not "check-mated", so in most positions, this would be an instant win! How is that not completely unbalanced?

I really don't think this was thought through. On the other hand, it's not impossible. In go, for instance, it would be similar to starting with several pieces on the board, or the expert player conceding several areas of the board at once, both of which are negatives, but completely recoverable.

My rationale is that something like check-mate applies even if it's described, eg. pieces prevent other pieces from moving near them, or similar, so protection applies even when it's not your turn, or that check-mate applies to the king. Then, it might just be possible to guard even intermediate points, so the weaker player can't bring in the pieces necessary for even a fool's mate. But I still don't think it was a good idea.

* A naturally gifted player can beat a good player on their second ever game.

I just don't believe it. However gifted, whatever you've heard, it surely takes longer than that to learn the moves of the pieces?

Pizza

May. 16th, 2006 03:11 am
jack: (Default)
Tonight, at post-geek-pizza we played croquet at Relativity. This is very good, and must be encouraged at all opportunities. I didn't manage any spectacular shots, and muffed a couple, but am generally getting comfortable with the idea of what I'm capable of doing, what strategies are most machiavellian, and generally being an non-embarassing if not good player. Though we must also practice on full size lawn pre-winkers :)

Then we played penultima. We're in a definite penultima phase, I'm sure some people must be bored. But both of tonight's games went fairly well, if slightly long. They both reached brief endgames, where people had nearly figured out some pieces, and knew something about more, and were just about able to execute one or two move ahead plans, though in the end both ended with fortunate chance, working out how a fairly powerful piece moved, or moving a king into a bad position.

I'm sure penultima needs modding somehow, but I'm not quite sure how.

* Spectators may not want to concentrate on entire game, but chat also. Suggestion: people can explain a rule to another spectator who wants to watch, and then not have to pay attention if they don't want to.
* The endgame often gets bogged down when people are drunk and tired and trying and failing to think of plans.
* There's a spectrum of rules from those worked out soon to those which (while preferrably still useful) are still keeping you guessing at the end. I think an ideal game would have a spread, and we currently edge toward the more complex end.
* But it's quite well balanced, I think. If you *stated* rules at the start, it'd be like learning chess all over again and require too much thought. Here you often work out rules toward the end, enough to have some strategy, but not enough to be sure.
* We (mainly Ian) are experimenting with rules that get pieces out and active, without excessive jumping, but that discourage randomly bombing into the enemy bank ranks or asking "Can this piece move onto the enemy king" every turn. An early couple of these turned out not so well, but in general we've been having interesting ideas

Penultima

May. 9th, 2006 12:52 am
jack: (Default)
This is mainly a note to myself, but as I struggle to make Penultima rules I invent have interesting, tantalising, and somewhat helpful without being completely obvious[1] names that are poetry in themselves, and am not especially practiced at the same, perhaps making the names of the list of ideas I need to transcribe public will spur me to improve:

Repton
Boulder
Taxicab
Cruciform
Space hopper
Crocodile Dundee
Ray gun
Hovercraft
Bolas
[White/Red] Queen

[1] Not that I've ever seen a too obvious rule, even a couple of completely obvious not-too-powerful rules in a game would be fine, and I'm probably pretty prone to making not-especially-obvious rules.