1[2 {3 "id": "one-plank-each",4 "title": "One plank each",5 "proposedFields": "level.mechanics: [{ id: \"frail\", type: \"frail\", version: 1, state: \"derived\", leaves: { <NOUN>: <NOUN>, ... } }] declares the host FRAIL mechanic (derived: no runtime state; crumble results live in object noun/existence). leaves maps a thing's CURRENT noun to its leftover noun; the thing keeps its id; a noun missing from the map is removed (to: null). There is no per-object leaves field (D25 revised). FRAIL is a property word parsed like the core properties. observations list every turn with a crumble, a handover, a FRAIL mover, or a win; handovers[].departed are the distinct occupants that left, stayedOrEntered are what keeps the cell occupied at the checkpoint.",6 "level": {7 "id": "one-plank-each",8 "width": 11,9 "height": 7,10 "objects": [11 {12 "id": "word-miau-1",13 "kind": "word",14 "text": "MIAU",15 "x": 0,16 "y": 017 },18 {19 "id": "word-is-1",20 "kind": "word",21 "text": "IS",22 "x": 1,23 "y": 024 },25 {26 "id": "word-you-1",27 "kind": "word",28 "text": "YOU",29 "x": 2,30 "y": 031 },32 {33 "id": "water-1",34 "kind": "object",35 "noun": "WATER",36 "x": 5,37 "y": 038 },39 {40 "id": "water-2",41 "kind": "object",42 "noun": "WATER",43 "x": 6,44 "y": 045 },46 {47 "id": "water-3",48 "kind": "object",49 "noun": "WATER",50 "x": 7,51 "y": 052 },53 {54 "id": "water-4",55 "kind": "object",56 "noun": "WATER",57 "x": 5,58 "y": 159 },60 {61 "id": "water-5",62 "kind": "object",63 "noun": "WATER",64 "x": 6,65 "y": 166 },67 {68 "id": "water-6",69 "kind": "object",70 "noun": "WATER",71 "x": 7,72 "y": 173 },74 {75 "id": "miau-1",76 "kind": "object",77 "noun": "MIAU",78 "x": 1,79 "y": 280 },81 {82 "id": "word-win-1",83 "kind": "word",84 "text": "WIN",85 "x": 3,86 "y": 287 },88 {89 "id": "drift-1",90 "kind": "object",91 "noun": "DRIFT",92 "x": 5,93 "y": 294 },95 {96 "id": "drift-2",97 "kind": "object",98 "noun": "DRIFT",99 "x": 6,100 "y": 2101 },102 {103 "id": "drift-3",104 "kind": "object",105 "noun": "DRIFT",106 "x": 7,107 "y": 2108 },109 {110 "id": "shell-1",111 "kind": "object",112 "noun": "SHELL",113 "x": 9,114 "y": 2115 },116 {117 "id": "water-7",118 "kind": "object",119 "noun": "WATER",120 "x": 5,121 "y": 3122 },123 {124 "id": "water-8",125 "kind": "object",126 "noun": "WATER",127 "x": 6,128 "y": 3129 },130 {131 "id": "water-9",132 "kind": "object",133 "noun": "WATER",134 "x": 7,135 "y": 3136 },137 {138 "id": "water-10",139 "kind": "object",140 "noun": "WATER",141 "x": 5,142 "y": 4143 },144 {145 "id": "water-11",146 "kind": "object",147 "noun": "WATER",148 "x": 6,149 "y": 4150 },151 {152 "id": "water-12",153 "kind": "object",154 "noun": "WATER",155 "x": 7,156 "y": 4157 },158 {159 "id": "word-shell-1",160 "kind": "word",161 "text": "SHELL",162 "x": 8,163 "y": 4164 },165 {166 "id": "word-is-2",167 "kind": "word",168 "text": "IS",169 "x": 9,170 "y": 4171 },172 {173 "id": "water-13",174 "kind": "object",175 "noun": "WATER",176 "x": 5,177 "y": 5178 },179 {180 "id": "water-14",181 "kind": "object",182 "noun": "WATER",183 "x": 6,184 "y": 5185 },186 {187 "id": "water-15",188 "kind": "object",189 "noun": "WATER",190 "x": 7,191 "y": 5192 },193 {194 "id": "word-drift-1",195 "kind": "word",196 "text": "DRIFT",197 "x": 0,198 "y": 6199 },200 {201 "id": "word-is-3",202 "kind": "word",203 "text": "IS",204 "x": 1,205 "y": 6206 },207 {208 "id": "word-frail-1",209 "kind": "word",210 "text": "FRAIL",211 "x": 2,212 "y": 6213 },214 {215 "id": "water-16",216 "kind": "object",217 "noun": "WATER",218 "x": 5,219 "y": 6220 },221 {222 "id": "water-17",223 "kind": "object",224 "noun": "WATER",225 "x": 6,226 "y": 6227 },228 {229 "id": "water-18",230 "kind": "object",231 "noun": "WATER",232 "x": 7,233 "y": 6234 },235 {236 "id": "word-water-1",237 "kind": "word",238 "text": "WATER",239 "x": 8,240 "y": 6241 },242 {243 "id": "word-is-4",244 "kind": "word",245 "text": "IS",246 "x": 9,247 "y": 6248 },249 {250 "id": "word-sink-1",251 "kind": "word",252 "text": "SINK",253 "x": 10,254 "y": 6255 }256 ],257 "mechanics": [258 {259 "id": "frail",260 "type": "frail",261 "version": 1,262 "state": "derived",263 "leaves": {264 "DRIFT": "WATER"265 }266 }267 ],268 "title": "One plank each"269 },270 "expectedRoute": "RRRRRRRRURDDUL",271 "steps": 14,272 "observations": [273 {274 "afterTurn": 4,275 "crumbled": [],276 "won": false,277 "handovers": [278 {279 "id": "drift-1",280 "departed": [281 "word-win-1"282 ],283 "stayedOrEntered": [284 "miau-1"285 ]286 }287 ]288 },289 {290 "afterTurn": 5,291 "crumbled": [292 {293 "id": "drift-1",294 "from": "DRIFT",295 "to": "WATER"296 }297 ],298 "won": false,299 "handovers": [300 {301 "id": "drift-2",302 "departed": [303 "word-win-1"304 ],305 "stayedOrEntered": [306 "miau-1"307 ]308 }309 ]310 },311 {312 "afterTurn": 6,313 "crumbled": [314 {315 "id": "drift-2",316 "from": "DRIFT",317 "to": "WATER"318 }319 ],320 "won": false,321 "handovers": [322 {323 "id": "drift-3",324 "departed": [325 "word-win-1"326 ],327 "stayedOrEntered": [328 "miau-1"329 ]330 }331 ]332 },333 {334 "afterTurn": 7,335 "crumbled": [336 {337 "id": "drift-3",338 "from": "DRIFT",339 "to": "WATER"340 }341 ],342 "won": false343 },344 {345 "afterTurn": 14,346 "crumbled": [],347 "won": true348 }349 ],350 "exercises": [351 "step-off crumble (not step-on)",352 "handover is safe: a pushed word leaves a plank while YOU enters it (turns 4, 5, 6)",353 "noun-keyed leaves (mechanics.leaves.DRIFT = WATER): DRIFT becomes WATER, same id",354 "leftover WATER participates in the same-turn contact phase with no effect (it is alone in its cell)",355 "any mover counts: the word WIN is the departing occupant in every handover"356 ],357 "notes": "Tidewater Draft A. All sentences except the loose WIN are pinned by board edges and corners, so the route is forced: push WIN across the three planks, each plank survives its handover and crumbles when the cat steps off it, then carry WIN into SHELL IS _ on the far shore. The draft's alternative (break DRIFT IS FRAIL to keep the bridge) was removed: with a loose FRAIL sentence the solver found DRIFT IS WIN in 14 steps, which skips the mechanic. After turn 7 the bridge is water and there is no way back."358 },359 {360 "id": "two-tides",361 "title": "Two tides",362 "proposedFields": "level.mechanics: [{ id: \"frail\", type: \"frail\", version: 1, state: \"derived\", leaves: { <NOUN>: <NOUN>, ... } }] declares the host FRAIL mechanic (derived: no runtime state; crumble results live in object noun/existence). leaves maps a thing's CURRENT noun to its leftover noun; the thing keeps its id; a noun missing from the map is removed (to: null). There is no per-object leaves field (D25 revised). FRAIL is a property word parsed like the core properties. observations list every turn with a crumble, a handover, a FRAIL mover, or a win; handovers[].departed are the distinct occupants that left, stayedOrEntered are what keeps the cell occupied at the checkpoint.",363 "level": {364 "id": "two-tides",365 "width": 13,366 "height": 7,367 "objects": [368 {369 "id": "word-shell-1",370 "kind": "word",371 "text": "SHELL",372 "x": 0,373 "y": 0374 },375 {376 "id": "word-win-1",377 "kind": "word",378 "text": "WIN",379 "x": 2,380 "y": 0381 },382 {383 "id": "water-1",384 "kind": "object",385 "noun": "WATER",386 "x": 5,387 "y": 0388 },389 {390 "id": "water-2",391 "kind": "object",392 "noun": "WATER",393 "x": 6,394 "y": 0395 },396 {397 "id": "water-3",398 "kind": "object",399 "noun": "WATER",400 "x": 7,401 "y": 0402 },403 {404 "id": "word-water-1",405 "kind": "word",406 "text": "WATER",407 "x": 10,408 "y": 0409 },410 {411 "id": "word-is-1",412 "kind": "word",413 "text": "IS",414 "x": 11,415 "y": 0416 },417 {418 "id": "word-sink-1",419 "kind": "word",420 "text": "SINK",421 "x": 12,422 "y": 0423 },424 {425 "id": "water-4",426 "kind": "object",427 "noun": "WATER",428 "x": 5,429 "y": 1430 },431 {432 "id": "water-5",433 "kind": "object",434 "noun": "WATER",435 "x": 6,436 "y": 1437 },438 {439 "id": "water-6",440 "kind": "object",441 "noun": "WATER",442 "x": 7,443 "y": 1444 },445 {446 "id": "water-7",447 "kind": "object",448 "noun": "WATER",449 "x": 5,450 "y": 2451 },452 {453 "id": "water-8",454 "kind": "object",455 "noun": "WATER",456 "x": 6,457 "y": 2458 },459 {460 "id": "water-9",461 "kind": "object",462 "noun": "WATER",463 "x": 7,464 "y": 2465 },466 {467 "id": "miau-1",468 "kind": "object",469 "noun": "MIAU",470 "x": 1,471 "y": 3472 },473 {474 "id": "sand-1",475 "kind": "object",476 "noun": "SAND",477 "x": 5,478 "y": 3479 },480 {481 "id": "sand-2",482 "kind": "object",483 "noun": "SAND",484 "x": 6,485 "y": 3486 },487 {488 "id": "sand-3",489 "kind": "object",490 "noun": "SAND",491 "x": 7,492 "y": 3493 },494 {495 "id": "word-is-2",496 "kind": "word",497 "text": "IS",498 "x": 9,499 "y": 3500 },501 {502 "id": "water-10",503 "kind": "object",504 "noun": "WATER",505 "x": 5,506 "y": 4507 },508 {509 "id": "water-11",510 "kind": "object",511 "noun": "WATER",512 "x": 6,513 "y": 4514 },515 {516 "id": "water-12",517 "kind": "object",518 "noun": "WATER",519 "x": 7,520 "y": 4521 },522 {523 "id": "shell-1",524 "kind": "object",525 "noun": "SHELL",526 "x": 3,527 "y": 5528 },529 {530 "id": "water-13",531 "kind": "object",532 "noun": "WATER",533 "x": 5,534 "y": 5535 },536 {537 "id": "water-14",538 "kind": "object",539 "noun": "WATER",540 "x": 6,541 "y": 5542 },543 {544 "id": "water-15",545 "kind": "object",546 "noun": "WATER",547 "x": 7,548 "y": 5549 },550 {551 "id": "word-miau-1",552 "kind": "word",553 "text": "MIAU",554 "x": 0,555 "y": 6556 },557 {558 "id": "word-is-3",559 "kind": "word",560 "text": "IS",561 "x": 1,562 "y": 6563 },564 {565 "id": "word-you-1",566 "kind": "word",567 "text": "YOU",568 "x": 2,569 "y": 6570 },571 {572 "id": "water-16",573 "kind": "object",574 "noun": "WATER",575 "x": 5,576 "y": 6577 },578 {579 "id": "water-17",580 "kind": "object",581 "noun": "WATER",582 "x": 6,583 "y": 6584 },585 {586 "id": "water-18",587 "kind": "object",588 "noun": "WATER",589 "x": 7,590 "y": 6591 },592 {593 "id": "word-sand-1",594 "kind": "word",595 "text": "SAND",596 "x": 8,597 "y": 6598 },599 {600 "id": "word-and-1",601 "kind": "word",602 "text": "AND",603 "x": 9,604 "y": 6605 },606 {607 "id": "word-shoal-1",608 "kind": "word",609 "text": "SHOAL",610 "x": 10,611 "y": 6612 },613 {614 "id": "word-is-4",615 "kind": "word",616 "text": "IS",617 "x": 11,618 "y": 6619 },620 {621 "id": "word-frail-1",622 "kind": "word",623 "text": "FRAIL",624 "x": 12,625 "y": 6626 }627 ],628 "mechanics": [629 {630 "id": "frail",631 "type": "frail",632 "version": 1,633 "state": "derived",634 "leaves": {635 "SAND": "SHOAL",636 "SHOAL": "WATER"637 }638 }639 ],640 "title": "Two tides"641 },642 "expectedRoute": "RRRRRRRURRDLLLLLLLLDLUUUDDDDRR",643 "steps": 30,644 "observations": [645 {646 "afterTurn": 5,647 "crumbled": [648 {649 "id": "sand-1",650 "from": "SAND",651 "to": "SHOAL"652 }653 ],654 "won": false655 },656 {657 "afterTurn": 6,658 "crumbled": [659 {660 "id": "sand-2",661 "from": "SAND",662 "to": "SHOAL"663 }664 ],665 "won": false666 },667 {668 "afterTurn": 7,669 "crumbled": [670 {671 "id": "sand-3",672 "from": "SAND",673 "to": "SHOAL"674 }675 ],676 "won": false677 },678 {679 "afterTurn": 14,680 "crumbled": [],681 "won": false,682 "handovers": [683 {684 "id": "sand-3",685 "departed": [686 "word-is-2"687 ],688 "stayedOrEntered": [689 "miau-1"690 ]691 }692 ]693 },694 {695 "afterTurn": 15,696 "crumbled": [697 {698 "id": "sand-3",699 "from": "SHOAL",700 "to": "WATER"701 }702 ],703 "won": false,704 "handovers": [705 {706 "id": "sand-2",707 "departed": [708 "word-is-2"709 ],710 "stayedOrEntered": [711 "miau-1"712 ]713 }714 ]715 },716 {717 "afterTurn": 16,718 "crumbled": [719 {720 "id": "sand-2",721 "from": "SHOAL",722 "to": "WATER"723 }724 ],725 "won": false,726 "handovers": [727 {728 "id": "sand-1",729 "departed": [730 "word-is-2"731 ],732 "stayedOrEntered": [733 "miau-1"734 ]735 }736 ]737 },738 {739 "afterTurn": 17,740 "crumbled": [741 {742 "id": "sand-1",743 "from": "SHOAL",744 "to": "WATER"745 }746 ],747 "won": false748 },749 {750 "afterTurn": 30,751 "crumbled": [],752 "won": true753 }754 ],755 "exercises": [756 "two-link leftover chain on the same id: SAND to SHOAL (first crossing), SHOAL to WATER (second crossing)",757 "AND subject: SAND AND SHOAL IS FRAIL keeps the leftover FRAIL",758 "handover while pushing IS back across the shoals (turns 14, 15, 16)",759 "noun-keyed leaves map in the level mechanics declaration (D25 revised)"760 ],761 "notes": "Tidewater Draft B without the rock. The IS the player needs is on the island, so every sandbar is crossed twice: out (SAND becomes SHOAL behind the cat) and back while pushing IS (SHOAL becomes WATER). A third crossing is impossible. Leftovers are declared once per level on the noun (D25 revised): mechanics.leaves = { SAND: \"SHOAL\", SHOAL: \"WATER\" }, looked up by the thing's CURRENT noun each time it crumbles, so the same id walks the chain SAND, SHOAL, WATER with no counter. The draft rock (a pushed ROCK spending one crossing) is left out to keep the vocabulary small; one-plank-each already covers a pushed word as a departing occupant."762 },763 {764 "id": "log-walks-off",765 "title": "Log walks off",766 "proposedFields": "level.mechanics: [{ id: \"frail\", type: \"frail\", version: 1, state: \"derived\", leaves: { <NOUN>: <NOUN>, ... } }] declares the host FRAIL mechanic (derived: no runtime state; crumble results live in object noun/existence). leaves maps a thing's CURRENT noun to its leftover noun; the thing keeps its id; a noun missing from the map is removed (to: null). There is no per-object leaves field (D25 revised). FRAIL is a property word parsed like the core properties. observations list every turn with a crumble, a handover, a FRAIL mover, or a win; handovers[].departed are the distinct occupants that left, stayedOrEntered are what keeps the cell occupied at the checkpoint.",767 "level": {768 "id": "log-walks-off",769 "width": 9,770 "height": 3,771 "objects": [772 {773 "id": "word-log-1",774 "kind": "word",775 "text": "LOG",776 "x": 0,777 "y": 0778 },779 {780 "id": "word-is-1",781 "kind": "word",782 "text": "IS",783 "x": 1,784 "y": 0785 },786 {787 "id": "word-you-1",788 "kind": "word",789 "text": "YOU",790 "x": 2,791 "y": 0792 },793 {794 "id": "word-sand-1",795 "kind": "word",796 "text": "SAND",797 "x": 4,798 "y": 0799 },800 {801 "id": "word-and-1",802 "kind": "word",803 "text": "AND",804 "x": 5,805 "y": 0806 },807 {808 "id": "word-log-2",809 "kind": "word",810 "text": "LOG",811 "x": 6,812 "y": 0813 },814 {815 "id": "word-is-2",816 "kind": "word",817 "text": "IS",818 "x": 7,819 "y": 0820 },821 {822 "id": "word-frail-1",823 "kind": "word",824 "text": "FRAIL",825 "x": 8,826 "y": 0827 },828 {829 "id": "sand-1",830 "kind": "object",831 "noun": "SAND",832 "x": 0,833 "y": 1834 },835 {836 "id": "log-1",837 "kind": "object",838 "noun": "LOG",839 "x": 0,840 "y": 1841 },842 {843 "id": "sand-2",844 "kind": "object",845 "noun": "SAND",846 "x": 1,847 "y": 1848 },849 {850 "id": "sand-3",851 "kind": "object",852 "noun": "SAND",853 "x": 2,854 "y": 1855 },856 {857 "id": "shell-1",858 "kind": "object",859 "noun": "SHELL",860 "x": 8,861 "y": 1862 },863 {864 "id": "word-shell-1",865 "kind": "word",866 "text": "SHELL",867 "x": 0,868 "y": 2869 },870 {871 "id": "word-is-3",872 "kind": "word",873 "text": "IS",874 "x": 1,875 "y": 2876 },877 {878 "id": "word-win-1",879 "kind": "word",880 "text": "WIN",881 "x": 2,882 "y": 2883 }884 ],885 "mechanics": [886 {887 "id": "frail",888 "type": "frail",889 "version": 1,890 "state": "derived",891 "leaves": {}892 }893 ],894 "title": "Log walks off"895 },896 "expectedRoute": "RRRRRRRR",897 "steps": 8,898 "observations": [899 {900 "afterTurn": 1,901 "crumbled": [902 {903 "id": "sand-1",904 "from": "SAND",905 "to": null906 }907 ],908 "won": false,909 "frailMovers": [910 "log-1"911 ]912 },913 {914 "afterTurn": 2,915 "crumbled": [916 {917 "id": "sand-2",918 "from": "SAND",919 "to": null920 }921 ],922 "won": false,923 "frailMovers": [924 "log-1"925 ]926 },927 {928 "afterTurn": 3,929 "crumbled": [930 {931 "id": "sand-3",932 "from": "SAND",933 "to": null934 }935 ],936 "won": false,937 "frailMovers": [938 "log-1"939 ]940 },941 {942 "afterTurn": 4,943 "crumbled": [],944 "won": false,945 "frailMovers": [946 "log-1"947 ]948 },949 {950 "afterTurn": 5,951 "crumbled": [],952 "won": false,953 "frailMovers": [954 "log-1"955 ]956 },957 {958 "afterTurn": 6,959 "crumbled": [],960 "won": false,961 "frailMovers": [962 "log-1"963 ]964 },965 {966 "afterTurn": 7,967 "crumbled": [],968 "won": false,969 "frailMovers": [970 "log-1"971 ]972 },973 {974 "afterTurn": 8,975 "crumbled": [],976 "won": true,977 "frailMovers": [978 "log-1"979 ]980 }981 ],982 "exercises": [983 "a FRAIL mover never crumbles itself: the LOG is FRAIL and YOU, and moves every turn without crumbling",984 "a different FRAIL mover can trigger a crumble: the LOG leaving sand-1 crumbles sand-1 (turn 1), which the LOG shared at reset",985 "a noun missing from mechanics.leaves is removed: SAND is unmapped, so crumbled.to is null and the id leaves state.objects",986 "stacked authored start (LOG on SAND) is legal because neither is SINK"987 ],988 "notes": "A minimal engine fixture rather than a world level. Every up or down move is rejected (it would push a pinned sentence out of bounds), so the only route is eight steps right. Each sand crumbles when the LOG steps off it, and nothing enters behind it."989 }990]