1 00:00:00,6 --> 00:00:04,14 Okay. Games without chance a little short one 2 00:00:04,14 --> 00:00:06,709 on 1b. Loopy games. 3 00:00:06,709 --> 00:00:12,880 Now, there's a famous comedy skit, about argument. 4 00:00:12,880 --> 00:00:18,550 And these two people sit down and they have an argument, and one person says, 5 00:00:18,550 --> 00:00:25,181 look argument is not just about contradicting one another. 6 00:00:25,181 --> 00:00:30,486 And the other person says yes it is, no it is, yes it is, no it is, yes it is. 7 00:00:30,486 --> 00:00:35,112 This is the example of famous loopy game that children like to play. 8 00:00:35,112 --> 00:00:40,392 Although I wouldn't encourage them all that much and its call TIS TISN'T, now in 9 00:00:40,392 --> 00:00:46,32 this game in loopy game. We represent the, where we are by nodes, 10 00:00:46,32 --> 00:00:49,820 and these two nodes are called tis and tisn't. 11 00:00:49,820 --> 00:00:54,370 And the blue player can move from tisn't to tis, and the red player can move from 12 00:00:54,370 --> 00:00:58,925 tis to tisn't. And, yes it is; no it isn't; yes it is; 13 00:00:58,925 --> 00:01:03,55 not it isn't; yes it it; no it isn't, yes, and this goes on for, you know as 14 00:01:03,55 --> 00:01:08,223 long as they want to play, it's kind of fun. 15 00:01:08,223 --> 00:01:13,663 here's a more more adult game you can play that's, that's loopy or possibly 16 00:01:13,663 --> 00:01:18,390 loopy. It's called fair shares and varied pairs. 17 00:01:18,390 --> 00:01:24,851 So what we have is a bunch of beans, or counters, I'm using quarters in this case 18 00:01:24,851 --> 00:01:32,286 on the table in various heaps. Now what can happen is, is there are two 19 00:01:32,286 --> 00:01:36,718 kinds of moves. You can take a heap of quarters and 20 00:01:36,718 --> 00:01:43,284 divide it into say two heaps of equal size or maybe four heaps of equal size. 21 00:01:43,284 --> 00:01:48,224 But in any case you could take any group of, any heap of quarters and divide it up 22 00:01:48,224 --> 00:01:54,133 into any number of heaps as long as they're the same size. 23 00:01:55,550 --> 00:01:59,825 That's called the fair shares part. The varied pairs part is you can take two 24 00:01:59,825 --> 00:02:03,985 heaps, as long as they have a different number, and combine them into a single 25 00:02:03,985 --> 00:02:10,316 heap. Now because, we can combine heaps and 26 00:02:10,316 --> 00:02:15,636 separate heaps out. There's a possibility, a real possibility 27 00:02:15,636 --> 00:02:19,326 that the game loops on forever. However, this is a really fun game to 28 00:02:19,326 --> 00:02:24,246 play at, at parties. Try with almonds, or, or walnuts. 29 00:02:24,246 --> 00:02:28,800 Or if you're in the South, try with pecans or pecans. 30 00:02:28,800 --> 00:02:34,284 I never knew which way to say it. in any case and then of course the first 31 00:02:34,284 --> 00:02:39,490 player who can't move loses. And the losing position is all heaps of 32 00:02:39,490 --> 00:02:43,350 one. There you can't separate them all out. 33 00:02:43,350 --> 00:02:46,760 And you can't combine them because they're all equal. 34 00:02:46,760 --> 00:02:50,535 And so this is the losing position who ever gets who ever's. 35 00:02:52,90 --> 00:02:56,960 Presented with this position here looses because there's no possible moves. 36 00:02:56,960 --> 00:03:02,144 So here's little about loopy moves and we'll be back in a few minutes with a 37 00:03:02,144 --> 00:03:05,800 little bit about Sente Gote.