The tee game from a restaurant table, and four larger boards it generalises to.
Two grid shapes, and the only difference between them is how many directions a
peg can jump: a triangle staggers its rows so a hole has six neighbours, a
square board has four. The jump, the goal and the dead end are the same either
way, which is why one legalJumps serves all five.
Hole counts are checked rather than asserted from memory -- 15, 21, 33 for the
English cross, 37 for the shallower French cut, 41 for the diamond -- and a
test walks every board from its opening to a standstill, which is what would
catch a geometry that produced a board nobody can move on.
PegJump carries only its ends. A jump is always two steps in one direction, so
the hole in between is the only one it can be, and storing it as well would be
a second copy of the same fact with the freedom to disagree.
This is the first one-seat game in the app. GameRules took it without changes:
one seat, always on the clock until the board runs out of jumps, and viewFor is
the identity because there is nobody to hide anything from. The catalogue entry
and the seat-count change it needs come with the screen.
The AI never runs during an ordinary game, since the only seat belongs to the
person playing. It is here because an empty seat has to be playable by
something, and because keeping the pegs together is what a "suggest a jump"
button would want.
Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Urn6eEBA6XzrnfoibL7faC
Claude
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