Fuse Arithmetic
Disarm eight linked arithmetic fuses with the number queue 2, 1, 3, 2. Tap a column to add the next number to the first remaining fuse seen from the current entry side. You start entering from the TOP; two gravity reversals let you enter from the BOTTOM instead. A fuse clears at EXACTLY 10. Going over 10 overloads the board. Every cleared fuse sends +1 to each orthogonal neighboring fuse, which may trigger a chain. Cleared sockets stay empty and ignore later pulses. Plan the cascade, not just the obvious complement: a small early addition can prepare a neighbor for a later chain. Clear all eight before the four numbers run out.
About this experiment
Disarm eight linked arithmetic fuses with the number queue 2, 1, 3, 2. Tap a column to add the next number to the first remaining fuse seen from the current entry side. You start entering from the TOP; two gravity reversals let you enter from the BOTTOM instead. A fuse clears at EXACTLY 10. Going over 10 overloads the board. Every cleared fuse sends +1 to each orthogonal neighboring fuse, which may trigger a chain. Cleared sockets stay empty and ignore later pulses. Plan the cascade, not just the obvious complement: a small early addition can prepare a neighbor for a later chain. Clear all eight before the four numbers run out. Keyboard: Tab and Enter/Space operate buttons; R restarts.