Zertz - Blue non-corner strategy with isolating on a4 and b5

Remember, you want to isolate two white marbles on a4 and b5 if the first marble is placed in the blue area. Your strategy is to force your opponent to jump into the a4-d7 line. In the most cases you first have to force a jump into the d7-g4 line and remove g4 to force a jump onto d7.

You leave the board like this:
  
N = marble of free choice
nn = ring of free choice
First marble placed on a4 or b5:
Note that in this case you can choose one ring to remove.

Your opponent		You
1.	Na4/b5,a2	2.	Nb5/a4,a3
3.	xa4Nc6	4.	Nd7,b3
5.	xd7Nb5	6.	Na4,b4
7.	xa4Nc6	8.	Nd7,c4
9.	xd7Nb5	10.	Na4,c5
11.	xa4Nc6	12.	Wd7,nn
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on c6 or d7:
Note that in this case you don't have ro remove g4, and you only give away five marbles.

Your opponent		You
1.	Nc6/d7,a2	2.	Nd7/c6,a3
3.	xd7Nb7	4.	Na4,b3
5.	xa4Nc6	6.	Nd7,b4
7.	xd7Nb5	8.	Na4,c4
9.	xa4Nc6	10.	Nd7,c5
11.	xd7Nb5	12.	Wa4,c6 x Wa4, Wb5

First marble placed on f5 or g4:

Your opponent		You
1.	Nf5/g4,a2	2.	Ng4/f5,a3
3.	xg4Ne6	4.	Nd7,b3
5.	xd7Nf5	6.	Ng4,b4
7.	xg4Nb5	8.	Nd7,c4
9.	xd7Nc6	10.	Ne6,g4
10.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on d7 or e6:

Your opponent		You
1.	Nd7/e6,a2	2.	Ne6/d6,a3
3.	xe6Nc5	4.	Nb4,b3
5.	xb4Nd6	6.	Nc5,b4
7.	xc5Ne6	8.	Wd7,c4
9.	xd7Nf5	10.	Ne6,g4
11.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on a3 or b4:

Your opponent		You
1.	Na3/b4,a2	2.	Nb4/a3,g4
3.	xa3Nc5	4.	Nb4,a3
5.	xb4Nd6	6.	Ne6,b3
7.	xe6Nc5	8.	Nd6,b4
9.	xc5Ne6	10.	Wf5,c4
10.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on b4 or c5:

Your opponent		You
1.	Nb4/c5,a2	2.	Nc5/b4,a3
3.	xb4Nd6	4.	Ne6,b3
5.	xe6Nc5	6.	Nd6,b4
7.	xc5Ne6	8.	Wd7,c4
9.	xd7Nf5	10.	Ne6,g4
11.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on d5 or e5:

Your opponent		You
1.	Nd5/e5,a2	2.	Ne5/d5,a3
Alternativ 1: Your opponent jumps to c4
3.	xe5Nc4	4.	Nd5,b3
5.	xc4Ne5	6.	Wf5,b4
7.	xf5Nd5	8.	Ne5,c4
9.	xd5Nf5	10.	Ne6,g4
11.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5
Alternativ 2: Your opponent jumps to f5
3.	xd5Nf5	4.	Ng4,b3
5.	xg4Ne6	6.	Nd7,b4
7.	xd7Nf5	8.	Ng4,c4
9.	xg4Ne6	10.	Wf5,g4
11.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5

First marble placed on f4:

Your opponent		You
1.	Nf4,a2	2.	Ng3,a3
3.	xg3Ne6	4.	Nf5,b3
5.	xf5Nd5	6.	Nc4,b4
7.	xc4Ne5	8.	Wd5,c4
9.	xd5Nf5	10.	Ne6,g4
11.	xf5Nd7	12.	Nc6,c5
13.	xd7Nb5	14.	Wa4,c6 x Wa4, Wb5