I personally switched from udemy and Lynda to YouTube for learning , as i found the content better and more concise. Maybe you should use this approach if you do not want to spend hundreds on courses, especially for unity the number of channels is very high and the content and learning value surpasses in my opinion a lot of commercial alternatives(most of udemy and Lynda material always felt rushed and rarely covered concepts behind doing something and felt a lot like a narration of code that left you with a working game prototype but little idea of why you used one approach or another).
Some channels i learn from and still follow :
Brackeys ( love how he explains the concept behind most things he covers and is very to the point, also has full projects , my favorite at the moment);
I am sure there are a lot more out there , so happy learning.
No. If there are 21 possible pieces, and 3 of them can be beaten, then the chance of winning is 3/21.
If you include the chance of a draw, then it maybe doesn't make sense to think in terms of the chance of winning - instead you might have a 'score' for each challenge, and count a draw as the average of a win and a lose. That would make the following:
Private vs 3 pieces it always wins against: 3 * 1 = 3
Private vs 12 pieces it always loses against: 12 * 0 = 0
Private vs 6 pieces it always draws against: 6 * 0.5 = 3
Total 'score' for attacking an unknown piece: 3 + 0 + 3 = 6 (out of a maximum 21, for a hypothetical piece that always win against any of the 21 opposing pieces)
Same equation for general:
General vs 19 pieces it always wins against: 19 * 1 = 19
General vs 2 pieces it always loses against: 2 * 0 = 0
General vs 1 piece it always draws against: 1 * 0.5 = 0.5
Total 'score' for attacking an unknown piece: 19 + 0 + 0.5 = 19.5 (out of a maximum 21)
The higher the score, the more beneficial it is, ignoring the value of the defeated piece or the implications for future turns.