Since my answer this similar question is somewhat outdated, here's a new answer.

Edge loops

1. Ensure you're in edge select mode (⎈ Ctrl↹ Tab)

2. Select an edge ring by pressing ⎈ Ctrl⎇ Alt RMB over an edge

3. Run checker deselect (the Space search is useful here)

4. Run multi select loops

Note that this selects edge loops as shown in your example. To do the same for edge rings, do the inverse:

#Edge rings

1. Ensure you're still in edge select mode
2. Select an edge loop this time (⎇ Alt RMB)
3. Run checker deselect
4. Run multi select loops, then enable rings in the redo menu (F6 or 3D view > Toolshelf)

Since my answer this similar question is somewhat outdated, here's a new answer.

Edge loops

1. Ensure you're in edge select mode (⎈ Ctrl↹ Tab)

2. Select an edge ring by pressing ⎈ Ctrl⎇ Alt RMB over an edge

3. Run checker deselect (the Space search is useful here)

4. Run multi select loops

Note that this selects edge loops as shown in your example. To do the same for edge rings, do the inverse:

Edge rings

1. Ensure you're still in edge select mode
2. Select an edge loop this time (⎇ Alt RMB)
3. Run checker deselect
4. Run multi select loops, then enable rings in the redo menu (F6 or 3D view > Toolshelf)

Since my answer this similar question is somewhat outdated, here's a new answer.

Edge loops

1. Ensure you're in edge select mode (⎈ Ctrl↹ Tab)

2. Select an edge ring by pressing ⎈ Ctrl⎇ Alt RMB over an edge

3. Run checker deselect (the Space search is useful here)

4. Run multi select loops

Note that this selects edge loops as shown in your example. To do the same for edge rings, do the inverse:

#Edge rings

1. Ensure you're still in edge select mode
2. Select an edge loop this time (⎇ Alt RMB)
3. Run checker deselect
4. Run multi select loops, then enable rings in the redo menu (F6 or 3D view > Toolshelf)

Since my answer this similar question is somewhat outdated, here's a new answer.

Edge loops

1. Ensure you're in edge select mode (⎈ Ctrl↹ Tab)

2. Select an edge ring by pressing ⎈ Ctrl⎇ Alt RMB over an edge

3. Run checker deselect (the Space search is useful here)

4. Run multi select loops

Note that this selects edge loops as shown in your example. To do the same for edge rings, do the inverse:

#Edge rings

1. Ensure you're still in edge select mode
2. Select an edge loop this time (⎇ Alt RMB)
3. Run checker deselect
4. Run multi select loops, then enable rings in the redo menu (F6 or 3D view > Toolshelf)