1
00:00:00,012 --> 00:00:03,919
Alright, so you want to look at the
solution of this.

2
00:00:03,919 --> 00:00:09,255
So let's, let's try to solve it.
This is not the only possible argument.

3
00:00:09,255 --> 00:00:12,597
But let's say, let's try to see what's
going on.

4
00:00:12,597 --> 00:00:17,339
So if blue goes first that's left.
Then, then there's only two edges

5
00:00:17,339 --> 00:00:20,891
available for blue and there more or less
the same.

6
00:00:20,891 --> 00:00:25,491
So blue will cut this.
Now if you think about it and therefore

7
00:00:25,491 --> 00:00:30,227
thi, this right edge, this red edge up
here is, floats off.

8
00:00:30,228 --> 00:00:36,398
Right can either do this or this.
But right's best move is to move here,

9
00:00:36,399 --> 00:00:43,216
because, if right doesn't cut this now,
then blue will cut down the blue below it

10
00:00:43,216 --> 00:00:47,559
next time.
And then right will, will be without a

11
00:00:47,559 --> 00:00:51,862
move.
So right that's the best move for right

12
00:00:51,862 --> 00:00:56,836
after blue does this.
So let, let, let's label these 1 2.

13
00:00:56,836 --> 00:01:03,493
Then, then blue left only has 1 move left.
So that's got to be this one 3.

14
00:01:03,494 --> 00:01:09,061
And then right only has 1 move left so
that's get cut, that's 4.

15
00:01:09,061 --> 00:01:15,800
And now it's blue's turn.
It's left's turn.

16
00:01:15,801 --> 00:01:32,518
No moves available, so left loses.
So if left goes first then left loses.

17
00:01:32,519 --> 00:01:42,157
Alright, let's take a look and try to see
what happens if right moves first.

18
00:01:42,157 --> 00:01:48,866
Right moves first.
Again, you can either look at all possible

19
00:01:48,866 --> 00:01:56,489
cases or you can look at it and try to
figure out what the best opening move for

20
00:01:56,489 --> 00:02:00,358
right is.
And the best opening move for right is

21
00:02:00,358 --> 00:02:05,862
either this one or this one.
Because, because of this, this threat

22
00:02:05,862 --> 00:02:12,102
from, from left to chop down below and,
and get rid of that right move, right may

23
00:02:12,102 --> 00:02:16,143
as well take this move while, while he or
she can.

24
00:02:16,143 --> 00:02:24,410
Now, left at this point might as well chop
down a right and so that happens.

25
00:02:24,410 --> 00:02:31,346
And now this right is unavailable.
This all flows up off the page.

26
00:02:31,346 --> 00:02:39,276
Let's see if now left.
It's now rights turn so this was 1, 2.

27
00:02:39,276 --> 00:02:43,631
Right's turn is 3.
Right cuts that.

28
00:02:43,631 --> 00:02:52,600
And now left cuts this.
And now, well, it's rights turn and

29
00:02:52,600 --> 00:03:04,189
there's no moves, so right loses.
Going back to the original picture.

30
00:03:04,189 --> 00:03:12,261
This says that if right goes first, right
loses.

31
00:03:12,261 --> 00:03:22,726
Okay, so if you got this, great.
Make up other things and, and try them out

32
00:03:22,726 --> 00:03:26,286
for, for yourself.
It.

33
00:03:26,286 --> 00:03:34,376
If you have some difficulty with that let
us know what, what the problems were.

34
00:03:34,376 --> 00:03:42,316
Go through the solutions carefully, and
see if you can't fi, pizz, puzzle it out.

35
00:03:42,316 --> 00:03:47,399
And, and we'll see you all next time, with
week two.

36
00:03:47,399 --> 00:03:48,431
Take care.