 const int GRIDSIZE = 7;
 const int STRIP_LENGTH = GRIDSIZE * GRIDSIZE;
 
-PololuLedStrip<2> leds;
+const int LED_STRIP_PIN = 2;
+PololuLedStrip<LED_STRIP_PIN> leds;
 rgb_color colors[STRIP_LENGTH];
 
 const int SWITCH_ON = 1;

  37, 38, 39, 40, 41, 42, 43,
  44, 45, 46, 47, 48, 49, 50,
};

// Solution:
// .-..-0-
// 2..2.-.
// .-.....
// .1...1.
// .....-.
// ...1..2
// .1...-.

const int E = 99; // Empty cell. Everything else is a wall.
const int PUZZLE[] = {

  updateGridColors();
  leds.write(colors, STRIP_LENGTH);
}

