Extend Crossways Bob Triples

EP4 Dual Mode Constraints

EP4 Dual Mode Derivation

  0 1 2 3 4 5 6 7 8 9 10 11
1. Crossways Bob Triples 127 567 1 7 123 7 123 7
2. Extract places above the hunt bell 27 567 - 7 - 7 - -
3. Extract places below the hunt bell - - 1 - 123 - 123 -
Expand places above the hunt bell H G F E D C B A
4. Reverse and invert places from [2] - - 1 - 1 - 123 16
5. Separate into two overlapping strips - - 1 - 1 - 123
6. Using the start change and overlap - 1 - 123 16
7. Expand places above mode in [6] to next stage - 1 - 123 10
8. Connect the static [5] and expanded [7] strip - - 1 - 1 - 123 - 1 - 123 10
9. Reverse and invert places in [8] back again 2E 90E - E - 90E - E - E - -
Expand places below the hunt bell A B C D E F G H
10. Below places from [3] - - 1 - 123 - 123 -
11. Separate into two overlapping strips - - 1 - 123 - 123
12. Using the start change and overlap - 123 -
13. Expand places above mode in [12] to next stage - 125 - 127 -
14. Connect the static [11] and the expanded [13] strip - - 1 - 123 - 123 - 125 - 127 -
Recombine above and below places A B C D E F G H I J K L
15. Above places from [9] 2E 90E - E - 90E - E - E - -
16. Below places from [14] - - 1 - 123 - 123 - 125 - 127 -
17. Default hunt bell places 1 - - - - - - - - - - E
18. [Unnamed] Differential Bob Cinques 12E 90E 1 E 123 90E 123 E 125 E 127 E

Extension and contraction candidates using extension process EP4-4/3:4:3/5:2:2  

1425736 Crossways Bob Triples 567.1.7.123.7.123.7,127
14263E90785 [Unnamed] Differential Bob Cinques 90E.1.E.123.90E.123.E.125.E.127.E,12E
14263E0B8CA57T9 [Unnamed] Bob Septuples ABC.1.C.123.ABC.123.C.125.ABC.127.C.129.C.12E.C,12C
Triples Cinques Septuples
Crossways Bob Triples [Unnamed] Differential Bob Cinques [Unnamed] Bob Septuples