Pick anything and be asked it cold, whether or not you owe it. Nothing here is unlocked by anything else.
Chapter 1
1.d4 Nf6
200 decisions · 40 rounds of 5
Black plays 2...e6
129 decisions · 26 rounds of 5
Black plays 2...g6
21 decisions · 5 rounds of 5
Black plays 2...c5
37 decisions · 8 rounds of 5
Black plays 2...d6
12 decisions · 3 rounds of 5
Chapter 2
1.d4 d5
102 decisions · 21 rounds of 5
Black plays 2...c6
42 decisions · 9 rounds of 5
Black plays 2...dxc4
35 decisions · 7 rounds of 5
Black plays 2...e5
13 decisions · 3 rounds of 5
Black plays 2...Nc6
7 decisions · 2 rounds of 5
Chapter 3
1.d4 e6
132 decisions · 27 rounds of 5
Chapter 4
1.d4 d6
94 decisions · 19 rounds of 5
Black plays 2...Nf6
25 decisions · 5 rounds of 5
51 decisions · 11 rounds of 5
Black plays 2...Bg4
5 decisions · 1 round of 5
Black plays 2...Nd7
15 decisions · 3 rounds of 5
Black plays 2...f5
2 decisions · 1 round of 5
Chapter 5
1.d4 g6
104 decisions · 21 rounds of 5
Black plays 2...Bg7
79 decisions · 16 rounds of 5
45 decisions · 9 rounds of 5
4 decisions · 1 round of 5
10 decisions · 2 rounds of 5