Search found 20 matches

by Ytreza
Fri Sep 06, 2019 10:44 pm
Forum: Rules
Topic: Repetition of moves: some dubious positions
Replies: 14
Views: 3456

Repetition of moves: some dubious positions

Hello! I tried to imagine some situations were the repetition rule as currently formulated would not be straightforward to apply. Let me know what you think about them, maybe I just missed something and it'd be the occasion to learn. I tried to think about plausible positions (not crazy imbricated f...
by Ytreza
Thu Sep 05, 2019 9:00 am
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

I tend to agree with you on repetitions. But if you are right there is all reasons to set repetitions as a loss for white (or white needs to change his move). As you say, it would not change most of the games (maybe even not a single one (?)) while being clearer, more elegant and easier to put into ...
by Ytreza
Sun Sep 01, 2019 7:57 pm
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

Note that my last suggestions for the winning conditions solve the cases you mention without requiring the capture of the king on the edge. Indeed, if the king is isolated in an indestructible structure, it is not possible for white to win, whatever number of free moves are given to him. In such cas...
by Ytreza
Sun Sep 01, 2019 1:53 am
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

So after thinking again about all this, I would suggest the following reformulation (trying to be the most concise and complete as possible): 1. Initial setup Board = 11x11 squares, pieces = 12 defenders + king + 24 attackers. Initial position as Copenhagen. 2. Movement 2.1. Attackers play first, th...
by Ytreza
Fri Aug 30, 2019 3:29 am
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

as in, it's possible to construct a game tree from that position onwards leading to a black win, with both parties cooperating), otherwise it's a draw." I assume that your point is that the player playing black moves all pieces, also playing white's turn. I also assume that white did not build an e...
by Ytreza
Fri Aug 30, 2019 12:27 am
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

I was also seeking a procedure in this line of thought (it is like in go, if there is a disagreement about the life of a group, both players can continue to play locally to prove its life or death). However the procedure you mention is not correct if I understand it well. Black could destroy an edge...
by Ytreza
Thu Aug 29, 2019 10:19 pm
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

If you want to keep the edge fort as winning condition, I would suggest to rephrase the winning condition for white as: "White wins if he managed to put his king in a safe position, i.e. in a position where it cannot be captured nor enclosed". This encodes both the win on corners and by building an ...
by Ytreza
Thu Aug 29, 2019 7:42 pm
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

I like your way of thinking about the balance :) It never came to my mind and seems very attractive as somehow intrinsic property of asymmetric strategical games. Actually it is almost enough to convince me to forget the capture of the king on the edge, and with your other arguments (balance actuall...
by Ytreza
Thu Aug 29, 2019 2:49 pm
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Re: Rule variant between "Old hnefatafl" and Copenhagen

Thank you for your reply. 1) Good point. I have the feeling that if white manages to put strong stones on the edges in the opening, black has a much harder time as he cannot just close the corners, and the odds are quite balanced. 2) I agree that the edge fort is a beautiful rule. In my opinion it d...
by Ytreza
Tue Aug 27, 2019 7:30 pm
Forum: Rules
Topic: Rule variant between "Old hnefatafl" and Copenhagen
Replies: 16
Views: 1491

Rule variant between "Old hnefatafl" and Copenhagen

Hello! I discovered the Hnefatafl game during a recent trip in Norway (wonderful country btw! ^^) and got more and more interested in it. I kind of fell in love with its asymmetry, not only in the sense that black and white have two different winning conditions, but most of all because their reasoni...