circuit problem solving in a minesweeper way

The Laws of Circuit - you can learn and practice by just reading

Have you played Minesweeper Lately?
: In the class, I prodded my students to find known or hidden values in a circuit problem. Many are victims of too-many-equations from a simple circuit. Students are pretty luxurious in defining this voltage and that current, even though they may be already known or can be known by a simple mental math, instead of writing equations. So, to build a habit of minimalist approach of circuit problem solving (from a known to unknown one at a time), I suggest, in leisure time, to play the minesweeper game, which requires players to properly guess where mines are hidden. The number of mines hidden is indicated in the numered squares of the nine-square block. Except the very first guess, one must guess and move from the number in the opened squares.; The squares with numbers, in a circuit problem, may be taken as a voltage already specified by a current given by the problem. So let's be slower in writing equations. Spending time to find known/hidden values must be, in my opinion, and should be longer than the actual equation writing time.