Serpent Supper

Feed the serpent equal-valued food in order, then guide its 16-value head into the central nest within twenty-two beats. Each meal doubles the head and grows the body by one segment. Unequal food, walls, the boundary or your own body are fatal. The tail vacates its square on a normal move, so entering that departing tail square is allowed. Two Coil Reverse charges turn the whole body around: the old tail becomes the new head while keeping the head’s value. Reversing costs a beat but does not shorten the body. Use it to leave tight passages or approach the nest from a different side. All food and obstacles are visible; no new food appears. Keyboard: Tab and Enter/Space operate buttons; R restarts.