[samtcifihi]

From the attached .json position, after clicking "Challenge from position", I get the following preview, which doesn't appear to be intentional:

The fix Chappy proposed is to get the position that is currently focused rather than the end of the main line. This seems like what was probably intended.

{
  "format": "abstractplay-playground",
  "version": 1,
  "metaGame": "arimaa",
  "state": "{\"game\":\"arimaa\",\"numplayers\":2,\"variants\":[\"free\"],\"gameover\":false,\"winner\":[],\"stack\":[{\"_version\":\"20251223\",\"_results\":[],\"_timestamp\":\"2026-10-02T01:50:13.830Z\",\"currplayer\":1,\"board\":{\"dataType\":\"Map\",\"value\":[]},\"hands\":[[\"E\",\"M\",\"H\",\"D\",\"C\",\"R\"],[\"E\",\"M\",\"H\",\"D\",\"C\",\"R\"]]},{\"_version\":\"20251223\",\"_results\":[{\"type\":\"place\",\"what\":\"R\",\"where\":\"e1\"},{\"type\":\"place\",\"what\":\"E\",\"where\":\"e2\"},{\"type\":\"place\",\"what\":\"M\",\"where\":\"d2\"},{\"type\":\"place\",\"what\":\"H\",\"where\":\"c2\"},{\"type\":\"place\",\"what\":\"H\",\"where\":\"b2\"},{\"type\":\"place\",\"what\":\"D\",\"where\":\"a2\"},{\"type\":\"place\",\"what\":\"D\",\"where\":\"a1\"},{\"type\":\"place\",\"what\":\"C\",\"where\":\"c1\"},{\"type\":\"place\",\"what\":\"C\",\"where\":\"b1\"}],\"_timestamp\":\"2026-10-02T01:50:45.729Z\",\"currplayer\":2,\"lastmove\":\"Re1, Ee2, Md2, Hc2, Hb2, Da2, Da1, Cc1, Cb1\",\"board\":{\"dataType\":\"Map\",\"value\":[[\"e1\",[\"R\",1]],[\"e2\",[\"E\",1]],[\"d2\",[\"M\",1]],[\"c2\",[\"H\",1]],[\"b2\",[\"H\",1]],[\"a2\",[\"D\",1]],[\"a1\",[\"D\",1]],[\"c1\",[\"C\",1]],[\"b1\",[\"C\",1]]]},\"hands\":[[\"E\",\"M\",\"H\",\"D\",\"C\",\"R\"],[\"E\",\"M\",\"H\",\"D\",\"C\",\"R\"]]},{\"_version\":\"20251223\",\"_results\":[{\"type\":\"place\",\"what\":\"R\",\"where\":\"a8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"b8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"c8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"d8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"e8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"f8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"g8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"h8\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"h7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"g7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"f7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"e7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"d7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"c7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"b7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"a7\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"a6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"b6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"c6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"d6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"e6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"f6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"g6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"h6\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"h5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"g5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"f5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"e5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"d5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"c5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"b5\"},{\"type\":\"place\",\"what\":\"R\",\"where\":\"a5\"}],\"_timestamp\":\"2026-10-02T01:51:54.041Z\",\"currplayer\":1,\"lastmove\":\"ra8, rb8, rc8, rd8, re8, rf8, rg8, rh8, rh7, rg7, rf7, re7, rd7, rc7, rb7, ra7, ra6, rb6, rc6, rd6, re6, rf6, rg6, rh6, rh5, rg5, rf5, re5, rd5, rc5, rb5, ra5\",\"board\":{\"dataType\":\"Map\",\"value\":[[\"e1\",[\"R\",1]],[\"e2\",[\"E\",1]],[\"d2\",[\"M\",1]],[\"c2\",[\"H\",1]],[\"b2\",[\"H\",1]],[\"a2\",[\"D\",1]],[\"a1\",[\"D\",1]],[\"c1\",[\"C\",1]],[\"b1\",[\"C\",1]],[\"a8\",[\"R\",2]],[\"b8\",[\"R\",2]],[\"c8\",[\"R\",2]],[\"d8\",[\"R\",2]],[\"e8\",[\"R\",2]],[\"f8\",[\"R\",2]],[\"g8\",[\"R\",2]],[\"h8\",[\"R\",2]],[\"h7\",[\"R\",2]],[\"g7\",[\"R\",2]],[\"f7\",[\"R\",2]],[\"e7\",[\"R\",2]],[\"d7\",[\"R\",2]],[\"c7\",[\"R\",2]],[\"b7\",[\"R\",2]],[\"a7\",[\"R\",2]],[\"a6\",[\"R\",2]],[\"b6\",[\"R\",2]],[\"c6\",[\"R\",2]],[\"d6\",[\"R\",2]],[\"e6\",[\"R\",2]],[\"f6\",[\"R\",2]],[\"g6\",[\"R\",2]],[\"h6\",[\"R\",2]],[\"h5\",[\"R\",2]],[\"g5\",[\"R\",2]],[\"f5\",[\"R\",2]],[\"e5\",[\"R\",2]],[\"d5\",[\"R\",2]],[\"c5\",[\"R\",2]],[\"b5\",[\"R\",2]],[\"a5\",[\"R\",2]]]}}]}",
  "variants": [
    "free"
  ],
  "playerCount": 2,
  "focus": {
    "moveNumber": 0,
    "exPath": [
      6,
      0
    ]
  },
  "exploration": [
    [
      {
        "move": "Re1, Ee2, Md2, Hc2, Db2, Ca2",
        "children": [
          {
            "move": "ra8, rb8, rc8, rd8, re8, rf8, rg8, rh8, rh7, rg7, rf7, re7, rd7, rc7, rb7, ra7, ra6, rb6, rd6, rc6, re6, rf6, rh6, rg6, rh5, rg5, rf5, re5, rd5, rc5, rb5, ra5",
            "children": []
          }
        ]
      },
      {
        "move": "Rd1, Ce2, Cf2, Cc2",
        "children": []
      },
      {
        "move": "Re1, Ca2, Cb2, Cc2, Cd2, Cf2, Cg2, Ch2",
        "children": []
      },
      {
        "move": "Db2, Dc2, Df2, Dg2, Rh2, Rh1, Rg1, Rf1, Re1, Re2, Rd2, Rd1, Rc1, Rb1, Ra1, Ra2",
        "children": []
      },
      {
        "move": "Db2, Dg2, Rh2, Rh1, Rg1, Rf1, Rf2, Re2, Re1, Rd1, Rd2, Rc2, Rc1, Rb1, Ra1, Ra2",
        "children": [
          {
            "move": "ra8, ca6, ch6, cg6, ce6, cd6, cb6, ra7, rb7, rb8, rc8, rc7, rd7, rd8, re8, re7, rf7, rf8, rg8, rh8, rh7, rg7, cf6, cc6",
            "children": []
          }
        ]
      },
      {
        "move": "Ee2, Ra1, Rc2, Rc1, Rd1, Rf2, Rf1, Rg1, Rh1, Db2, Rb1, Rh2, Cd2, Dg2, Ce1, Ra2",
        "children": [
          {
            "move": "ed7, me7, hg7, hb7, rh7, rh8, rg8, rf8, rc8, rb8, ra8, ra7, dd8, de8, cf7, cc7",
            "children": []
          }
        ]
      },
      {
        "move": "Ee2, Hb2, Dg2, Cd2, Ra2, Ra1, Rb1, Rc1, Rc2, Rd1, Re1, Rf1, Rf2, Rh1, Rg1, Rh2",
        "children": [
          {
            "move": "ed7, me7, hg7, hb7, dd8, de8, cf7, cc7, ra7, ra8, rb8, rc8, rf8, rg8, rh8, rh7",
            "children": []
          }
        ]
      }
    ],
    null,
    null
  ],
  "moveAnnotations": null
}