The Wager with chips on felt: Lock/Lean/Coin are chip weights dragged onto a back-room felt table before you solve; the committed chip sits visibly on the felt while you work the question.

The Wager
read your own tell — bet, then solve
If 3(x − 2) = 12, what is the value of x ?
LOCK
+100
your stake is down.
it's watching you now — solve it.
or drag another weight to the felt
LEAN
COIN
Solve it
the bet is a chip on the felt, not a form field · a committed stake staring back changes the solve