Uploaded December 2024 | Updated September 2026, 1 week ago
Join the discord: discord.gg/52ZWsqDERb
Long time viewers after seeing this title might be wondering 'Didn't you already play full-defensive 18 cob'? The answer is yes, HOWEVER, the full-defensive 18 cob solution is unstable so this is the lowest amount of cobs I've fully defended the field using a stable solution.
Also if anyone's confused, full-defensive means u defend columns 1-8 from all zombies including imps.
My proposition for this setup was to make a rigorous solution. To make a rigorous solution, the ice waves have to be ≤13s and there can't be any B cobs (shooting column 8 to kill all fast zombies). These two requirements are very difficult to follow
The full-defensive 20 cob solution (youtu.be/MrIhMDj0-Nk ) is super simple and I even solved it myself in April 2023 without any issues before I knew how to solve. It's simply the PSD/PDcc solution of new 22 cob, except u use instants on the top half to deal with zombonies (new 22: youtu.be/2BGmY-hIg30 )
The full-defensive 19 cob solution on the other hand is extremely complicated and it took me a long time to solve. If you play the same solution as full-defensive 20 except use doom when needed, you end up requiring 11 slots which is no bueno so I had to completely remake the whole solution without using jalapeno.
Solution: ch6-I6, PPI | PSD/ASD | IPaC-Pd/PD | PSD/PDcc | IPP-Nd/ND | PSD/PDcc | IPaC-Pd/PD | PSD/PDcc | IPA-PDcc/PD | IP/PS-PPdd-PPDD ( 6 | 6 | 12 | 6 | 11.5 | 6 | 13.5 | 6 | 13.5 | 13+ )
Sequence explanation: pastebin.com/FCnRqCuv
Skill standard: docs.google.com/spreadsheets/d/1dz0QOuBZnISUU3hxr7rStbBg3gWAdykBUcPjRB43D2s/edit?gid=0#gid=0
Level 10.5 on the skill standard
The reason this solution is so wack is because the wave that happens when u are reusing the cobs from the doom wave is impossible normally. You get 2 cobs and u only have cherry which isn't enough, u would need 3 cobs + cherry so u gotta do some weird shit to make up for it. Typically, you would use jala + spikeweed for the zombonies to save the cob but there's not enough seed slots.
I had the idea of extending the ice waves so you can reuse the cobs early from the wrong wave. This makes that single ice wave work except you then run out of cobs the next wave because you used them early. This is fixed by having an adjacent ice wave on w19 to save the cobs (not easy).
I also indirectly found out from hydroxyl that u can add ice2 (PPI) to w1 and it makes it so I don't have to continue the sequence past w19.
W18 fodders are really difficult. I would recommend timing the ice later so u don't need as fast foddering.
24 cob: youtu.be/HPcT-7OGIY8
23 cob: youtu.be/TR0NzB9XTJk
New 22 cob: youtu.be/IyH3yf5IvXw
Full-defensive 20 cob: youtu.be/MrIhMDj0-Nk
Full-defensive 19 cob: this video
Full-defensive 18 cob: youtu.be/2xIllR7Il6Y (unstable B cobs)
Join the discord: discord.gg/52ZWsqDERb
Long time viewers after seeing this title might be wondering 'Didn't you already play full-defensive 18 cob'? The answer is yes, HOWEVER, the full-defensive 18 cob solution is unstable so this is the lowest amount of cobs I've fully defended the field using a stable solution.
Also if anyone's confused, full-defensive means u defend columns 1-8 from all zombies including imps.
My proposition for this setup was to make a rigorous solution. To make a rigorous solution, the ice waves have to be ≤13s and there can't be any B cobs (shooting column 8 to kill all fast zombies). These two requirements are very difficult to follow
The full-defensive 20 cob solution (youtu.be/MrIhMDj0-Nk ) is super simple and I even solved it myself in April 2023 without any issues before I knew how to solve. It's simply the PSD/PDcc solution of new 22 cob, except u use instants on the top half to deal with zombonies (new 22: youtu.be/2BGmY-hIg30 )
The full-defensive 19 cob solution on the other hand is extremely complicated and it took me a long time to solve. If you play the same solution as full-defensive 20 except use doom when needed, you end up requiring 11 slots which is no bueno so I had to completely remake the whole solution without using jalapeno.
Solution: ch6-I6, PPI | PSD/ASD | IPaC-Pd/PD | PSD/PDcc | IPP-Nd/ND | PSD/PDcc | IPaC-Pd/PD | PSD/PDcc | IPA-PDcc/PD | IP/PS-PPdd-PPDD ( 6 | 6 | 12 | 6 | 11.5 | 6 | 13.5 | 6 | 13.5 | 13+ )
Sequence explanation: pastebin.com/FCnRqCuv
Skill standard: docs.google.com/spreadsheets/d/1dz0QOuBZnISUU3hxr7rStbBg3gWAdykBUcPjRB43D2s/edit?gid=0#gid=0
Level 10.5 on the skill standard
The reason this solution is so wack is because the wave that happens when u are reusing the cobs from the doom wave is impossible normally. You get 2 cobs and u only have cherry which isn't enough, u would need 3 cobs + cherry so u gotta do some weird shit to make up for it. Typically, you would use jala + spikeweed for the zombonies to save the cob but there's not enough seed slots.
I had the idea of extending the ice waves so you can reuse the cobs early from the wrong wave. This makes that single ice wave work except you then run out of cobs the next wave because you used them early. This is fixed by having an adjacent ice wave on w19 to save the cobs (not easy).
I also indirectly found out from hydroxyl that u can add ice2 (PPI) to w1 and it makes it so I don't have to continue the sequence past w19.
W18 fodders are really difficult. I would recommend timing the ice later so u don't need as fast foddering.
24 cob: youtu.be/HPcT-7OGIY8
23 cob: youtu.be/TR0NzB9XTJk
New 22 cob: youtu.be/IyH3yf5IvXw
Full-defensive 20 cob: youtu.be/MrIhMDj0-Nk
Full-defensive 19 cob: this video
Full-defensive 18 cob: youtu.be/2xIllR7Il6Y (unstable B cobs)
