1973 - Snark

All info stolen from Regna in Blue blog (see below):

Snark

Snark’s concept is somewhat a hybrid of Mugwump and Hurkle. You guess a position and a circle radius, and then the game tells you if the hurkle is inside, outside, or on the circle that you guess. To guess an exact spot, the radius should be 0.

SNARK IS HIDING … START GUESSING!

COORDINATES
?3,3
RADIUS
?3
THE SNARK IS INSIDE YOUR CIRCLE

COORDINATES
?3,2
RADIUS
?2
THE SNARK IS OUTSIDE YOUR CIRCLE

COORDINATES
?3,4
RADIUS
?2
THE SNARK IS INSIDE YOUR CIRCLE

COORDINATES
?2,4
RADIUS
?1
THE SNARK IS INSIDE YOUR CIRCLE

COORDINATES
?2,4
RADIUS
?0
YOU CAUGHT HIM IN 5 GUESSES!!!
GOOD SHOW!

This was the most complicated of the games to play, and I never ended up settling on an optimal strategy.

This game starts:

TRY TO CATCH HIM. HERE’S HOW … WHEN I ASK, YOU TYPE

THE X,Y COORDINATES OF A GRIDPOINT (IF YOU DON’T KNOW

WHAT THAT MEANS, ASK SOMEBODY!) AND PRESS THE RETURN

KEY. THEN, WHEN I ASK FOR ‘RADIUS’, YOU TYPE THE RADIUS

OF A CIRCLE CENTERED ON THE GRIDPOINT WHOSE X,Y

COORDINATES YOU JUST ENTERED. I WILL THEN TELL YOU

WHETHER THE SNARK IS ‘INSIDE’ YOUR CIRCLE, ‘OUTSIDE’

YOUR CIRCLE, OR ‘ON’ YOUR CIRCLE.

!!! IMPORTANT !!! IF YOU THINK YOU KNOW WHERE HE IS

HIDING, ENTER 0 (ZERO) AS THE RADIUS. GOOD HUNTING.

Game file (Basic):

https://archive.org/details/snark.qb64

Source:

https://bluerenga.blog/2019/03/15/before-adventure-part-2-mugwump-hurkle-snark-1973/