Clarify concurrency of B tasks

challenge-OT4-B1/readme.md

@@ -5,13 +5,13 @@
 
 ## Mission
 
-- Run a node for a month (30 full calender days).
+- Run a node for a month (30 full calendar days).
 
 - The 30 days count starts from 21-01-2021 at 08:00 CET, even if you started to run your node before that. Hence, if you have uninterrupted uptime, the challenge can earliest be completed on 20-02-2021 at 08:00 CET.
 
 - If your node is down for some periods, you must add the lost time afterwards. The summary log accumulates the uptimes of the node. It must show a runtime of at least 720 hours when submitting.
 
-- This challenge can be run concurrently with either challenge OT4-B2, OT-B3 or OT4-B4 or as a stand-alone challenge. 
+- This challenge can be run concurrently with either challenge OT4-B2, OT-B3 or OT4-B4 or as a stand-alone challenge.
 
 
 ## Submission

challenge-OT4-B2/readme.md

@@ -1,13 +1,16 @@
 | Challenge | Title | GTU Reward | Seats | Start Date | Last Date for Submission  |
 | -         | -     |          -:| -     |-           | -                         |
 | OT4-B2    | Run a baker for a month.         | 1000 GTU | 250 | 20-01-2021 23:00 PT | 03-03-2021 23:00 PT |
+
 ##
 
+:warning: If you choose to do this challenge, you cannot also do B3 or B4.
+
 ## Mission
 
 **1) Setup a node**
 
-- Run a node for a month (30 full calender days).
+- Run a node for a month (30 full calendar days).
 
 - The 30 days count starts from 21-01-2021 at 08:00 CET, even if you started to run your node before that. Hence, if you have uninterrupted uptime, the challenge can earliest be completed on 20-02-2021 at 08:00 CET.
 
@@ -29,7 +32,7 @@
 
 - Verify that your stake limit cannot be transferred.
 
-- Check your account regularly for baker rewards. 
+- Check your account regularly for baker rewards.
   - Note that with a 2000 GTU stake you might receive one baker reward per week but it is not guaranteed. Don't panic, receiving a baker reward is not mandatory for a successful submission.
   - If you have received a baker reward, verify that it is added to the staked amount or to the amount at disposal, depending on the restake earnings status of your baker account.
 
@@ -41,7 +44,7 @@
   - Add your baker ID
   - Add your baker account address
   - Add the blockhash of the block with the add baker transaction in it
-  
+
 - Upload your summary log (see [Logs](/logs.md) for instructions & tooling)
   - Runtime must show >= 720 hours.
   - Do not temper with or change anything in the log. Otherwise, we cannot guarantee acceptance.

challenge-OT4-B3/readme.md

@@ -4,12 +4,13 @@
 
 ##
 
+:warning: If you choose to do this challenge, you cannot also do B2 or B4.
 
 ## Mission
 
 **1) Setup a node**
 
-- Run a node for a month (30 full calender days).
+- Run a node for a month (30 full calendar days).
 
 - The 30 days count starts from 21-01-2021 at 08:00 CET, even if you started to run your node before that. Hence, if you have uninterrupted uptime, the challenge can earliest be completed on 20-02-2021 at 08:00 CET.
 
@@ -31,7 +32,7 @@
 
 - Verify that your stake limit cannot be transferred.
 
-- Check your account regularly for baker rewards. 
+- Check your account regularly for baker rewards.
   - Note that with a 2000 GTU stake you might receive one baker reward per week but it is not guaranteed. Don't panic, receiving a baker reward is not mandatory for a successful submission.
   - If you have received a baker reward, verify that it is added to the staked amount or to the amount at disposal, depending on the restake earnings status of your baker account.
 
@@ -45,7 +46,7 @@
 
 - Verify that your stake limit cannot be transferred.
 
-- Check your account regularly for baker rewards. 
+- Check your account regularly for baker rewards.
   - Note that with a 2000 GTU stake you might receive one baker reward per week but it is not guaranteed. Don't panic, receiving a baker reward is not mandatory for a successful submission.
   - If you have received a baker reward, verify that it is added to the staked amount or to the amount at disposal, depending on the restake earnings status of your baker account.
 

challenge-OT4-B4/readme.md

@@ -4,12 +4,13 @@
 
 ##
 
+:warning: If you choose to do this challenge, you cannot also do B2 or B3.
 
 ## Mission
 
 **1) Setup a node**
 
-- Run a node for a month (30 full calender days).
+- Run a node for a month (30 full calendar days).
 
 - The 30 days count starts from 21-01-2021 at 08:00 CET, even if you started to run your node before that. Hence, if you have uninterrupted uptime, the challenge can earliest be completed on 20-02-2021 at 08:00 CET.
 

readme.md

@@ -28,7 +28,7 @@ Each challenge has its own subfolder under `challenge-OT4-*` with a `readme.md`
 | OT4-B3    | [Register and deregister as baker.](challenge-OT4-B3) | 2000 GTU | 250 | 20-01-2021 23:00 PT | 03-03-2021 23:00 PT |
 | OT4-B4    | [Make baker updates.](challenge-OT4-B4)               | 3000 GTU | 250 | 20-01-2021 23:00 PT | 03-03-2021 23:00 PT |
 
-Each of the baker challenge OT4-B* takes 4 weeks to complete. OT4-B1 can be run as a stand-alone challenge or concurrently with either challenge OT4-B2, OT-B3, or OT4-B4. OT4-B2, OT4-B3, and OT4-B4 **cannot** be combined with each other.
+Each of the baker challenge OT4-B* takes 4 weeks to complete. OT4-B1 can be run as a stand-alone challenge or concurrently with <ins>**one of**</ins> either OT4-B2, OT-B3, or OT4-B4. OT4-B2, OT4-B3, and OT4-B4 **cannot** be combined with each other.
 
 The challenges intentionally only provide a minimum description of the tasks. For detailed step-to-step guides and troubleshooting, we expect contributors to consult [Documentation and Help](#documentation-and-help) or our [Discord channel](https://discord.com/invite/xWmQ5tp).