Official: PRTS 乌尔比安 S3 备注 ③ — the 【移动】 takes the anchor tile if it can be deployed on, else the tile one beyond, else
his own tile. Cause: "deployable" was any standable tile of the battle rect; UNITE_RECT holds both halves of the 联防 map, and
on escaped_single (the lone helper on the left half, the enemies out of the middle gate at col 10) an anchor that met no
enemy flew on to the right half, where no enemy walks, and he stood there for the whole skill. Now the landing must also
lie on his player's board: Battle.onOwnBoard(ps, r, c), the board region GEO.FIELD mapped onto the field (the hunk is
byte-identical to CB4's 219ab31, which uses it for the 突袭 landing, so the two merge cleanly).
Golden: 1 scenario — fields hidden-boss_9-solo: his first cast from (2,5) landed on (2,11), the solo boss field's right
half (checked instrumented); he now stays and the fight differs from there. Tests: test/sim/feedback5-ulpia-own-board.test.js
(4; the one-helper and the two-helper 联防 cases fail on the parent); test/sim/facing-invariance.test.js — its open field
has no boards, so its setup counts every tile as the player's own (the own-board rule is a board-position rule, like the
deployment order the scenario already avoids).