i made a bit of a strategy to get Efficient.
(most of the following decks are planned as to generally always be able to use all stones in hand in every turn to be semiconsistent)
[always remember CBA: Counter, Block and All-the-rest {also Chess Battle Advanced, thanks to Icely Puzzles}]
> For early game, always remember to try and lock out the enemy from most of the board ASAP without locking yourself from it too.
(this is for CASUAL mode. i'm uncertain these strategies will work in CHALLENGING.)
1. lose to 1-stones because 4 power sucks (or tie...)
2. beat the 2-stone master with less 2-stones than her :|
[deck: as many 2s as you can, the rest all 1s]
3. incendiate the 7-stone master's house
[deck: all the 2s]
4. incendiate the 11-stone master's house
[deck: mostly 2s, add a 6 and a 10 for good measure]
5. ask the 19-stone master to get some milk at the 7/11 (pov: he won't come back)
[deck: two 11s, all 7s and the rest 4s]
6. borrow some stones from the 31-stone master permanently
[deck: 4,4,5,7,7,7,8,8,11,19]
7. beat the 37-stone master with the bare minimum
[deck: all 1s... i'm not kidding]
8. kindly obtain some 43-stone from 43-stone master
[deck: 4,4,4,4,4,7,7,7,15,31]
9. beat the 53-stone master because it's such a walk in the park
[deck: 7,7,7,8,8,8,10,11,19,31]!
!this is the point where decks start to be less consistent but if you can understand how to use them it should be fine
10. defeat Bill with effectively just 4s really
[deck: as many 4s as you can. that's literally all you need. add some things like 31 for good measure.]
11. beat 71-stone master with sheer deletion powers
[deck: 31,31,19,19,19,11,11,7,7,7]
12. beat 79-stone master with the superior 77
[deck: 77,77,77,43,43,43,19,19,19,31]
13. beat 97-stone master with mastery of the game
[deck: 19,19,19,31,31,31,43,43,77,77]!
!make sure to not get locked early. if you can get even one 77 off, you probably already won. you just have to prevent the opponent from locking you with burn and freeze when you have few spaces to work with. be wary of 47, too.