diff --git a/package-lock.json b/package-lock.json
index 92bafdffe..18478db80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8938,4 +8938,4 @@
       "dev": true
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src-ui/changes.html b/src-ui/changes.html
index 0211f6c06..4238474ea 100644
--- a/src-ui/changes.html
+++ b/src-ui/changes.html
@@ -33,6 +33,8 @@
 <main>
 <div style="margin-bottom: 5px;"><b>Latest types</b> (<em><a href="/list.html" target="_parent">all types</a></em>)</div>
 <ul>
+  <li><a href="/p?rampage" target="_parent">Rampage</a></li>
+  <li><a href="/p?contact" target="_parent">Contact</a></li>
   <li><a href="/p?sananko" target="_parent">San-Anko サンアンコー</a></li>
   <li><a href="/p?bosnianroad" target="_parent">Bosnian Road</a></li>
   <li><a href="/p?kuromenbun" target="_parent">Kuromenbun クロメンブン</a></li>
diff --git a/src-ui/img/contact.png b/src-ui/img/contact.png
new file mode 100644
index 000000000..a3ea24c48
Binary files /dev/null and b/src-ui/img/contact.png differ
diff --git a/src-ui/img/rampage.png b/src-ui/img/rampage.png
new file mode 100644
index 000000000..011895d08
Binary files /dev/null and b/src-ui/img/rampage.png differ
diff --git a/src-ui/js/common/langs.js b/src-ui/js/common/langs.js
index 3cb608bbf..c3875902b 100644
--- a/src-ui/js/common/langs.js
+++ b/src-ui/js/common/langs.js
@@ -1,6 +1,6 @@
-// langs.js
-
-ui.langs = {
-	en: <%= JSON.stringify(langs.p_en) %>,
-	ja: <%= JSON.stringify(langs.p_ja) %>
-};
+// langs.js
+
+ui.langs = {
+	en: <%= JSON.stringify(langs.p_en) %>,
+	ja: <%= JSON.stringify(langs.p_ja) %>
+};
diff --git a/src-ui/js/ui/KeyPopup.js b/src-ui/js/ui/KeyPopup.js
index 687891f55..137fc8b5f 100644
--- a/src-ui/js/ui/KeyPopup.js
+++ b/src-ui/js/ui/KeyPopup.js
@@ -200,6 +200,8 @@ ui.keypopup = {
 		teri: [10, 0],
 		portal: [10, 0],
 		kuromenbun: [10, 0],
+		contact: [6, 0],
+		rampage: [131, 0],
 		bosnianroad: [8, 0],
 		sananko: [10, 113]
 	},
@@ -343,6 +345,8 @@ ui.keypopup = {
 			this.generate_retroships(mode);
 		} else if (type === 130) {
 			this.generate_lix(mode);
+		} else if (type === 131) {
+			this.generate_infinity(mode);
 		}
 	},
 	gentable4: function(mode) {
@@ -986,6 +990,28 @@ ui.keypopup = {
 			3
 		);
 	},
+	generate_infinity: function() {
+		this.generate_main(
+			[
+				"1",
+				"2",
+				"3",
+				"4",
+				"5",
+				"6",
+				"7",
+				"8",
+				"9",
+				"0",
+				["i", "∞"],
+				null,
+				null,
+				" ",
+				["-", "?"]
+			],
+			5
+		);
+	},
 
 	generate_main: function(list, split) {
 		for (var i = 0; i < list.length; i++) {
diff --git a/src-ui/js/ui/Misc.js b/src-ui/js/ui/Misc.js
index eea994ee9..4af121954 100755
--- a/src-ui/js/ui/Misc.js
+++ b/src-ui/js/ui/Misc.js
@@ -124,6 +124,7 @@ function toBGimage(pid) {
 		"cocktail",
 		"coffeemilk",
 		"compass",
+		"contact",
 		"coral",
 		"cts",
 		"curvedata",
@@ -176,6 +177,7 @@ function toBGimage(pid) {
 		"portal",
 		"ququ",
 		"rassi",
+		"rampage",
 		"remlen",
 		"retroships",
 		"roundtrip",
diff --git a/src-ui/list.html b/src-ui/list.html
index fbeb78612..b37417602 100644
--- a/src-ui/list.html
+++ b/src-ui/list.html
@@ -258,6 +258,8 @@ <h2 id="title"><span lang="ja">パズルの種類のリスト</span><span lang="
     <li data-pid="sashikazune"></li>
     <li data-pid="tachibk"></li>
     <li data-pid="subomino"></li>
+    <li data-pid="contact"></li>
+    <li data-pid="rampage"></li>
   </ul>
   </div>
   <div class="lists divides">
diff --git a/src-ui/p.html b/src-ui/p.html
index 05ce61742..100370435 100644
--- a/src-ui/p.html
+++ b/src-ui/p.html
@@ -8,7 +8,6 @@
 <link rel="apple-touch-icon" sizes="180x180" href="./apple-touch-icon.png">
 <link rel="icon" type="image/png" sizes="32x32" href="./favicon-32x32.png">
 <link rel="icon" type="image/png" sizes="16x16" href="./favicon-16x16.png">
-<link rel="manifest" href="./site.webmanifest">
 <link rel="mask-icon" href="./safari-pinned-tab.svg" color="#5bbad5">
 <link rel="stylesheet" href="./css/ui.css?<%= git.hash %>" type="text/css">
 <script type="text/javascript">
@@ -337,6 +336,12 @@ <h2 id="title2">読み込み中です...</h2>
         <span>__patchwork_leftaux__</span>
       </label>
     </div>
+    <div class="config" data-config="rampage_coloring">
+      <label>
+        <input type="checkbox">
+        <span>__rampage_coloring__</span>
+      </label>
+    </div>
     <div class="config" data-config="keypopup">
       <label>
         <input type="checkbox">
diff --git a/src-ui/res/history.en.yaml b/src-ui/res/history.en.yaml
index ff52e0f32..8ff2c65ce 100644
--- a/src-ui/res/history.en.yaml
+++ b/src-ui/res/history.en.yaml
@@ -222,3 +222,5 @@ lineofsight: This genre was invented by Inaba Naoki.
 kuromenbun: This genre first appeared in Puzzle Communication Nikoli vol. 138.
 teri: This genre was invented by Inaba Naoki.
 sananko: This genre was invented by Subaru Saito.
+contact: This genre was invented by Ivan Adrian Koswara a.k.a. chaotic_iak.
+rampage: This genre was invented by Ivan Adrian Koswara a.k.a. chaotic_iak.
\ No newline at end of file
diff --git a/src-ui/res/history.ja.yaml b/src-ui/res/history.ja.yaml
index 5982e4eba..90b7a7ea4 100644
--- a/src-ui/res/history.ja.yaml
+++ b/src-ui/res/history.ja.yaml
@@ -183,3 +183,5 @@ lineofsight: 稲葉直貴氏発案
 kuromenbun: パズル通信ニコリ vol.138より
 teri: 稲葉直貴氏発案
 sananko: 齋藤スバル氏発案
+contact: Ivan Adrian Koswara (chaotic_iak)氏発案
+rampage: Ivan Adrian Koswara (chaotic_iak)氏発案
\ No newline at end of file
diff --git a/src-ui/res/p.en.json b/src-ui/res/p.en.json
index a0dde6edb..64e390a73 100644
--- a/src-ui/res/p.en.json
+++ b/src-ui/res/p.en.json
@@ -53,6 +53,7 @@
     "discolor": "Disable color",
     "mouseonly": "Enable mouse-only input",
     "patchwork_leftaux": "Enable to input aux. lines with single click",
+    "rampage_coloring": "Show plaid background colors",
     "autocheck": "Answer check",
     "autocheck.off": "Manual",
     "autocheck.guarded": "Automatic (guarded)",
diff --git a/src-ui/res/rules.en.yaml b/src-ui/res/rules.en.yaml
index d5b8a011f..0de3bfa67 100644
--- a/src-ui/res/rules.en.yaml
+++ b/src-ui/res/rules.en.yaml
@@ -306,3 +306,5 @@ teri: "Shade some cells on the board.\n1. Shaded cells cannot be horizontally or
 lixloop: "Shade some cells on the board, and draw a single loop that goes through all remaining cells.\n1. The loop cannot branch off or cross itself.\n2. Shaded cells cannot be orthogonally adjacent.\n3. Cells with letters or question marks cannot be shaded, and are not part of the loop.\n4. The letters represent cells that contain a turning line (L), straight line (I), or shaded cell (X). The clued cells indicate whichever type is most frequent in that direction. If multiple types are tied for most frequent, all letters will be listed in the clue."
 sananko: "Place a number between 1 and 3 in some of the empty cells.\n1. Numbers must appear in groups of 3 orthogonally connected cells with the same number.\n2. Different groups cannot be orthogonally adjacent.\n3. Clues on shaded cells indicate the sum of numbers in the (up to four) orthogonally adjacent cells."
 bosnianroad: "Shade some cells to form a loop.\n1. The loop cannot visit a cell that's orthogonally or diagonally adjacent to a cell it has visited before.\n2. Gray cells cannot be shaded.\n3. A number indicates the amount of shaded cells in the orthogonally and diagonally adjacent cells."
+contact: "Divide the grid into dominoes. \n1. Each number indicates how many dominoes are orthogonally adjacent to the domino containing the number. \n2. Dominoes may contain any number of given numbers."
+rampage: "Divide the grid into dominoes. \n1. Each number represents a rampaging bull, which behaves as follows. The bull first moves to the other cell of the domino it's in, and then moves one extra space (thus breaking through the opposite short edge into a new domino). It then repeats this procedure with the new domino it's in, and so on. \n2. The number indicates how many dominoes the bull passes through, including the initial one. \n3. As a special case, if the bull never leaves the grid, the number is infinity (∞)."
\ No newline at end of file
diff --git a/src-ui/res/rules.ja.yaml b/src-ui/res/rules.ja.yaml
index f319ba150..4b7e18152 100644
--- a/src-ui/res/rules.ja.yaml
+++ b/src-ui/res/rules.ja.yaml
@@ -261,4 +261,4 @@ sananko: "1. 空いているマスのいくつかに１～３の数字を１つ
 bosnianroad: "1. いくつかのマスを黒く塗り、黒マスでひとつのループを作りましょう。\n2. ループの中腹同士が辺や頂点で接してはいけません。\n3. 灰色のマスは塗りつぶすことができません。数字は、その周囲8マスのうち黒く塗られるマスの数を表します。"
 subomino: "1. 点線上に線を引き、盤面の白マスをブロックに分割する。\n2. 数字は、そのマスを含むブロックのマス数を表す。ブロックは数字をいくつ含んでも良い。\n3. 辺で接するブロック同士は、一方が他方を包含してはいけない。ただし包含とは、片方のブロックを回転せずに平行移動させたとき、もう片方のブロックの上にマスがはみ出ず重ねられることである。"
 trainstations: "1. 盤面の全てのマスにタテヨコに線を引き、全体で１つの輪っかを作ります。\n2. 輪っかを作る線はマスの中央を通り、盤面の外に出たり、枝分かれしたり、行き止まりがあったりしてはいけません。\n3. ┼のマスでは、線は必ず立体交差します。┼以外のマスで線が交差してはいけません。\n4. 数字は駅を表します。駅は、数字の順番通りに通る必要があります。\n5. 線は駅のマスの上で直進します。"
-lineofsight: "1. パズル面のいくつかの頂点を線でつないで枝分かれのない一つのループを作る。\n2. 数字と矢印は、その方向を見たときに見える直線の長さを表す。"
+lineofsight: "1. パズル面のいくつかの頂点を線でつないで枝分かれのない一つのループを作る。\n2. 数字と矢印は、その方向を見たときに見える直線の長さを表す。"
\ No newline at end of file
diff --git a/src/common/langs.js b/src/common/langs.js
index 6b312e329..a631768a5 100644
--- a/src/common/langs.js
+++ b/src/common/langs.js
@@ -1,6 +1,6 @@
-// langs.js
-
-pzpr.failcodes = {
-	en: <%= JSON.stringify(langs.failcode_en) %>,
-	ja: <%= JSON.stringify(langs.failcode_ja) %>
-};
+// langs.js
+
+pzpr.failcodes = {
+	en: <%= JSON.stringify(langs.failcode_en) %>,
+	ja: <%= JSON.stringify(langs.failcode_ja) %>
+};
diff --git a/src/puzzle/Config.js b/src/puzzle/Config.js
index 19b0691ad..d9bedbf8c 100644
--- a/src/puzzle/Config.js
+++ b/src/puzzle/Config.js
@@ -53,7 +53,10 @@
 				"patchwork_leftaux",
 				true
 			); /* patchwork: Alternative mouse input */
-
+			this.add(
+				"rampage_coloring",
+				false
+			); /* rampage: plaid background coloring */
 			this.add("squarecell", true); /* セルは正方形にする */
 
 			/* 入力方法設定 */
@@ -402,6 +405,9 @@
 				case "patchwork_leftaux":
 					exec = pid === "patchwork";
 					break;
+				case "rampage_coloring":
+					exec = pid === "rampage";
+					break;
 				case "undefcell":
 					exec = pid === "shugaku" || pid === "lightshadow";
 					break;
@@ -498,6 +504,7 @@
 				case "disptype_interbd":
 				case "dispqnumbg":
 				case "mouseonly":
+				case "rampage_coloring":
 					puzzle.redraw();
 					break;
 
diff --git a/src/pzpr/variety.js b/src/pzpr/variety.js
index 46fb555a9..7fa3484c0 100755
--- a/src/pzpr/variety.js
+++ b/src/pzpr/variety.js
@@ -98,12 +98,6 @@
 			arukone: [0, 0, "アルコネ", "Arukone", "numlin"],
 			ayeheya: [0, 1, "∀人∃ＨＥＹＡ", "Ayeheya", "heyawake"],
 			balance: [0, 0, "Balance Loop", "Balance Loop"],
-			cave: [1, 0, "バッグ", "Cave", "kurodoko", { alias: "bag" }],
-			cbanana: [0, 0, "チョコバナナ", "Choco Banana"],
-			circlesquare: [0, 0, "Circles and Squares", "Circles and Squares"],
-			context: [0, 0, "Context", "Context"],
-			crossstitch: [0, 0, "Crossstitch", "Crossstitch"],
-			cts: [0, 0, "Cross the Streams", "Cross the Streams", "nonogram"],
 			barns: [1, 0, "バーンズ", "Barns"],
 			battleship: [0, 0, "Battleship", "Battleship", "statuepark"],
 			bdblock: [1, 0, "ボーダーブロック", "Border Block"],
@@ -113,6 +107,12 @@
 			bosnianroad: [0, 0, "Bosnian Road", "Bosnian Road"],
 			box: [0, 0, "ボックス", "Box"],
 			brownies: [0, 0, "ブラウニー", "Brownies", "yosenabe"],
+			cave: [1, 0, "バッグ", "Cave", "kurodoko", { alias: "bag" }],
+			cbanana: [0, 0, "チョコバナナ", "Choco Banana"],
+			circlesquare: [0, 0, "Circles and Squares", "Circles and Squares"],
+			context: [0, 0, "Context", "Context"],
+			crossstitch: [0, 0, "Crossstitch", "Crossstitch"],
+			cts: [0, 0, "Cross the Streams", "Cross the Streams", "nonogram"],
 			skyscrapers: [
 				0,
 				0,
@@ -130,6 +130,7 @@
 			coffeemilk: [0, 0, "コーヒー牛乳", "Coffee Milk", "wblink"],
 			cojun: [0, 0, "コージュン", "Cojun", "ripple"],
 			compass: [0, 0, "Compass", "Compass", "compass"],
+			contact: [0, 0, "コンタクト", "Contact"],
 			coral: [0, 0, "Coral", "Coral", "nonogram"],
 			country: [1, 0, "カントリーロード", "Country Road"],
 			creek: [1, 0, "クリーク", "Creek"],
@@ -321,6 +322,7 @@
 			putteria: [0, 0, "プッテリア", "Putteria", "hanare"],
 			ququ: [0, 0, "区区", "Ququ"],
 			railpool: [0, 0, "Rail Pool", "Rail Pool"],
+			rampage: [0, 0, "ランページ", "Rampage", "contact"],
 			rassi: [0, 0, "Rassi Silai", "Rassi Silai", "country"],
 			rectslider: [0, 0, "四角スライダー", "Rectangle-Slider", "bonsan"],
 			reflect: [1, 0, "リフレクトリンク", "Reflect Link"],
diff --git a/src/res/failcode.en.json b/src/res/failcode.en.json
index 8c560814d..44a418326 100644
--- a/src/res/failcode.en.json
+++ b/src/res/failcode.en.json
@@ -9,6 +9,7 @@
     "anNoShade": "The cell next to the arrow is not shaded.",
     "anNumberNe.crossstitch": "The number of crossings is not correct.",
     "anNumberNe.hebi": "A clue points at the wrong number.",
+    "anPiece.contact": "The number of adjacent dominoes is not correct.",
     "anShadeNe.lixloop": "A clue does not indicate the type of cell that is most common.",
     "anShadeNe.yajisoko": "The number of boxes is not correct.",
     "anShadeNe": "The number of shaded cells is not correct.",
@@ -124,6 +125,7 @@
     "bkMixed.view": "A room includes both numbered and non-numbered cells.",
     "bkMixed": "A tile includes both shaded and unshaded cells.",
     "bkMixedNum.fillomino": "An area has two or more kinds of numbers.",
+    "bkMixedNum.contact": "A domino has two different numbers.",
     "bkMoreThan2Num.araf": "An area has more than two numbers.",
     "bkMSGe2.nondango": "An area has two or more shaded circles.",
     "bkMSPassedGt2.moonsun": "A line passes the marks of the moon for two rooms in a row.",
@@ -780,6 +782,9 @@
     "rmDeadend.scrin": "There is a dead-end rectangle.",
     "rmIsolated.scrin": "There is an isolated rectangle.",
     "rmRectUnshade.scrin": "A rectangle is not part of the solution.",
+    "routeLenGt": "The number of dominoes on the bull's route is greater than the clue.",
+    "routeLenLt": "The number of dominoes on the bull's route is smaller than the clue.",
+    "routeLenLoop": "The route does not contain a loop.",
     "routeIgnoreCP.nurimaze": "There is a circle out of the shortest route from S to G.",
     "routePassDeadEnd.nurimaze": "There is a triangle on the shortest route from S to G.",
     "segBlackEq.balance": "Segments through a black circle are equal.",
diff --git a/src/variety/contact.js b/src/variety/contact.js
new file mode 100644
index 000000000..66ab231f6
--- /dev/null
+++ b/src/variety/contact.js
@@ -0,0 +1,694 @@
+//
+// パズル固有スクリプト部  Contact, Rampage, contact.js
+//
+(function(pidlist, classbase) {
+	if (typeof module === "object" && module.exports) {
+		module.exports = [pidlist, classbase];
+	} else {
+		pzpr.classmgr.makeCustom(pidlist, classbase);
+	}
+})(["contact", "rampage"], {
+	//---------------------------------------------------------
+	// マウス入力系
+	MouseEvent: {
+		autoedit_func: "qnum",
+		autoplay_func: "border",
+		inputModes: {
+			edit: ["number", "empty", "clear"],
+			play: ["border", "subline"]
+		},
+		mouseinput_auto: function() {
+			if (this.puzzle.playmode && (this.mousestart || this.mousemove)) {
+				if (this.btn === "left") {
+					if (this.isBorderMode()) {
+						this.inputborder();
+					} else {
+						this.dragDomino();
+					}
+				} else if (this.btn === "right") {
+					this.inputQsubLine();
+				}
+			} else if (this.puzzle.editmode) {
+				if (this.mousestart || this.mousemove) {
+					// this.inputborder(); // in case question border can be added in the future
+				} else if (this.mouseend && this.notInputted()) {
+					this.mouseCell = this.board.emptycell;
+					this.inputqnum();
+				}
+			}
+		},
+
+		dragDomino: function() {
+			var cell = this.getcell(),
+				cell2 = this.mouseCell;
+			if (cell.isnull || cell === cell2) {
+				return;
+			}
+			if (cell2.isnull) {
+				this.mouseCell = cell;
+				return;
+			}
+
+			if (cell.by !== cell2.by && cell.bx !== cell2.bx) {
+				return;
+			}
+			var horizontal = cell.by === cell2.by;
+			if (
+				(horizontal && Math.abs(cell.bx - cell2.bx) !== 2) ||
+				(!horizontal && Math.abs(cell.by - cell2.by) !== 2)
+			) {
+				return;
+			}
+			var b = this.board.getb(
+				(cell.bx + cell2.bx) >> 1,
+				(cell.by + cell2.by) >> 1
+			);
+			var blist = new this.klass.BorderList();
+			for (var d in cell.adjborder) {
+				blist.add(cell.adjborder[d]);
+			}
+			for (var d in cell2.adjacent) {
+				blist.add(cell2.adjborder[d]);
+			}
+			b.setQans(0);
+			b.draw();
+			blist.each(function(border) {
+				if (b !== border) {
+					border.setQans(1);
+					border.draw();
+				}
+			});
+		}
+	},
+	"MouseEvent@rampage": {
+		inputModes: {
+			edit: ["number", "empty", "clear", "info-road"],
+			play: ["border", "subline", "info-road"]
+		},
+		mouseinput: function() {
+			// override
+			if (this.puzzle.key.isZ || this.inputMode === "info-road") {
+				if (this.mousestart) {
+					this.dispRoute();
+				}
+			} else {
+				this.common.mouseinput.call(this);
+			}
+		},
+
+		dispRoute: function() {
+			var cell = this.getcell();
+			if (cell.isnull) {
+				return;
+			}
+
+			var route = cell.getBullRoute();
+			route.each(function(c) {
+				c.room.clist.setinfo(2);
+			});
+
+			var puzzle = this.puzzle;
+			puzzle.board.hasinfo = true;
+			puzzle.redraw();
+
+			this.mousereset();
+		}
+	},
+
+	//---------------------------------------------------------
+	// キーボード入力系
+	KeyEvent: {
+		enablemake: true,
+		keyinput: function(ca) {
+			if (ca === "w") {
+				var cell = this.cursor.getc();
+				if (!cell.isnull) {
+					cell.setValid(cell.ques !== 7 ? 7 : 0);
+				}
+			} else if (this.pid === "rampage" && ca === "i") {
+				var cell = this.cursor.getc();
+				if (!cell.isnull) {
+					cell.setQnum(-3);
+					cell.draw();
+				}
+			} else {
+				this.key_inputqnum(ca);
+			}
+		}
+	},
+
+	//---------------------------------------------------------
+	// 盤面管理系
+	"Cell@contact": {
+		minnum: 1,
+		maxnum: 6,
+
+		isValidNum: function() {
+			return (
+				!this.isnull && this.qnum >= this.minnum && this.qnum <= this.maxnum
+			);
+		},
+
+		isCmp: function() {
+			if (!this.puzzle.execConfig("autocmp")) {
+				return false;
+			}
+
+			var dominoes = this.getSurroundingDominoes();
+			if (
+				dominoes.some(function(cell) {
+					return cell.room.nodes.length !== 2;
+				})
+			) {
+				return false;
+			}
+			return this.qnum === dominoes.length;
+		},
+
+		getSurroundingDominoes: function() {
+			var dominoes = new this.klass.CellList();
+			if (
+				!this.isValidNum() ||
+				!this.room.clist ||
+				this.room.clist.length !== 2
+			) {
+				return dominoes;
+			}
+
+			var horizontal =
+				!this.adjborder.left.isBorder() || !this.adjborder.right.isBorder();
+			var c = this.room.clist[0];
+			var firstcell, secondcell;
+			// make firstcell top/left and secondcell bottom/right
+			if (!c.adjborder.right.isBorder() || !c.adjborder.bottom.isBorder()) {
+				(firstcell = this.room.clist[0]), (secondcell = this.room.clist[1]);
+			} else {
+				(firstcell = this.room.clist[1]), (secondcell = this.room.clist[0]);
+			}
+
+			var longside = horizontal ? ["top", "bottom"] : ["left", "right"];
+			var shortside = horizontal ? ["left", "right"] : ["top", "bottom"];
+
+			for (var dir in longside) {
+				var firstlong = firstcell.adjacent[longside[dir]];
+				var secondlong = secondcell.adjacent[longside[dir]];
+				if (firstlong.isValid()) {
+					dominoes.add(firstlong);
+					if (secondlong.isValid() && firstlong.room !== secondlong.room) {
+						dominoes.add(secondlong);
+					}
+				} else if (secondlong.isValid()) {
+					dominoes.add(secondlong);
+				}
+			}
+			var firstshort = firstcell.adjacent[shortside[0]];
+			var secondshort = secondcell.adjacent[shortside[1]];
+			if (firstshort.isValid()) {
+				dominoes.add(firstshort);
+			}
+			if (secondshort.isValid()) {
+				dominoes.add(secondshort);
+			}
+			return dominoes;
+		},
+
+		posthook: {
+			qans: function(num) {
+				if (num >= 1) {
+					this.checkAutoCmp();
+				}
+			}
+		}
+	},
+	"Cell@rampage": {
+		minnum: 1,
+		maxnum: function() {
+			return Math.ceil(this.board.cols / 2) * Math.ceil(this.board.rows / 2);
+		},
+
+		isValidNum: function() {
+			return !this.isnull && (this.qnum >= 0 || this.qnum === -3);
+		},
+
+		getBullRoute: function() {
+			var currentCell = this;
+			var loop = false;
+			var routeList = new this.klass.CellList();
+
+			while (currentCell.isValid() && currentCell.room.clist.length === 2) {
+				loop = routeList.some(function(c) {
+					return c === currentCell;
+				});
+				routeList.add(currentCell); // in case of a loop, the repeating cell is added so that we can check later
+				if (loop) {
+					break;
+				}
+				for (var dir in currentCell.adjacent) {
+					if (!currentCell.adjborder[dir].isBorder()) {
+						currentCell = currentCell.adjacent[dir].adjacent[dir];
+						break;
+					}
+				}
+			}
+			return routeList;
+		},
+
+		getBullRouteLen: function(route) {
+			var len = route.length;
+			var finalCell = route[len - 1];
+			var loop = false;
+			for (var i = 0; i < len - 1; i++) {
+				if (route[i] === finalCell) {
+					loop = true;
+					break;
+				}
+			}
+			return loop ? -1 : route.length;
+		},
+
+		getPlaidColor: function() {
+			return ((this.bx >> 1) % 2) + 2 * ((this.by >> 1) % 2);
+		}
+	},
+	Border: {
+		isGrid: function() {
+			return this.sidecell[0].isValid() && this.sidecell[1].isValid();
+		},
+		isBorder: function() {
+			return this.qans > 0 || this.isQuesBorder();
+		},
+		isQuesBorder: function() {
+			return !!(this.sidecell[0].isEmpty() ^ this.sidecell[1].isEmpty());
+		},
+
+		prehook: {
+			qans: function() {
+				return !this.isGrid();
+			},
+			qsub: function() {
+				return !this.isGrid();
+			}
+		}
+	},
+
+	Board: {
+		hasborder: 2,
+		initBoardSize: function(col, row) {
+			this.common.initBoardSize.call(this, col, row);
+
+			var odd = (col * row) % 2;
+			if (odd >= 1) {
+				this.getc(this.minbx + 1, this.minby + 1).ques = 7;
+			}
+		}
+	},
+
+	AreaRoomGraph: {
+		enabled: true
+	},
+
+	//---------------------------------------------------------
+	// 画像表示系
+	Graphic: {
+		gridcolor_type: "DLIGHT",
+		numbercolor_func: "qnum",
+
+		paint: function() {
+			this.drawBGCells();
+
+			this.drawValidDashedGrid();
+			this.drawQansBorders();
+			this.drawQuesBorders();
+			this.drawBorderQsubs();
+
+			this.drawQuesNumbers();
+			this.drawTarget();
+		},
+
+		getQuesBorderColor: function(border) {
+			return border.isQuesBorder() ? this.quescolor : null;
+		},
+
+		drawValidDashedGrid: function() {
+			var g = this.vinc("grid_waritai", "crispEdges", true);
+
+			var dasharray = this.getDashArray();
+
+			g.lineWidth = 1;
+			g.strokeStyle = this.gridcolor;
+
+			var blist = this.range.borders;
+			for (var n = 0; n < blist.length; n++) {
+				var border = blist[n];
+				g.vid = "b_grid_wari_" + border.id;
+				if (border.isGrid()) {
+					var px = border.bx * this.bw,
+						py = border.by * this.bh;
+					if (border.isVert()) {
+						g.strokeDashedLine(px, py - this.bh, px, py + this.bh, dasharray);
+					} else {
+						g.strokeDashedLine(px - this.bw, py, px + this.bw, py, dasharray);
+					}
+				} else {
+					g.vhide();
+				}
+			}
+		},
+		getQuesNumberText: function(cell) {
+			return cell.getNum() === -3 ? "∞" : this.getNumberText(cell, cell.qnum);
+		}
+	},
+	"Graphic@contact": {
+		qcmpcolor: "rgb(127,127,127)",
+		autocmp: "number",
+
+		getQuesNumberColor: function(cell) {
+			var qnum_color = this.getQuesNumberColor_mixed(cell);
+			if ((cell.error || cell.qinfo) === 1) {
+				return qnum_color;
+			}
+			return cell.isCmp() ? this.qcmpcolor : qnum_color;
+		},
+
+		setRange: function(x1, y1, x2, y2) {
+			var puzzle = this.puzzle,
+				bd = puzzle.board;
+			if (puzzle.execConfig("autocmp")) {
+				x1 = bd.minbx - 2;
+				y1 = bd.minby - 2;
+				x2 = bd.maxbx + 2;
+				y2 = bd.maxby + 2;
+			}
+			this.common.setRange.call(this, x1, y1, x2, y2);
+		}
+	},
+	"Graphic@rampage": {
+		errbcolor2: "rgb(255, 224, 192)",
+		PlaidColors: [
+			"white",
+			"rgb(160,255,160)",
+			"rgb(255,255,127)",
+			"rgb(192,192,192)"
+		],
+		getBGCellColor: function(cell) {
+			if (cell.error) {
+				return this.errbcolor1;
+			} else if (cell.qinfo === 2) {
+				return this.errbcolor2;
+			} else if (
+				!this.puzzle.execConfig("rampage_coloring") ||
+				cell.ques === 7
+			) {
+				return "white";
+			}
+			return this.PlaidColors[cell.getPlaidColor()];
+		},
+
+		paintRoute: function(route) {
+			route.each(function(c) {
+				c.room.clist.seterr(1);
+			});
+		}
+	},
+
+	//---------------------------------------------------------
+	// URLエンコード/デコード処理
+	"Encode@contact": {
+		decodePzpr: function(type) {
+			this.decode();
+		},
+		encodePzpr: function(type) {
+			this.encode();
+		},
+		decode: function() {
+			for (var c = 0; c < this.board.cell.length; c++) {
+				this.board.cell[c].setQues(0);
+			}
+
+			var c = 0,
+				i = 0,
+				bstr = this.outbstr,
+				bd = this.board;
+			for (i = 0; i < bstr.length; i++) {
+				var cell = bd.cell[c],
+					ca = bstr.charAt(i);
+
+				cell.ques = 0;
+				if (ca === "_") {
+					cell.ques = 7;
+				} else if (ca === ".") {
+					cell.qnum = -2;
+				} else if (this.include(ca, "0", "9")) {
+					cell.qnum = parseInt(ca, 10);
+				} else if (this.include(ca, "a", "z")) {
+					c += parseInt(ca, 36) - 10;
+				}
+
+				c++;
+				if (c >= bd.cell.length) {
+					break;
+				}
+			}
+			this.outbstr = bstr.substr(i);
+		},
+		encode: function() {
+			var cm = "",
+				count = 0,
+				bd = this.board;
+			for (var c = 0; c < bd.cell.length; c++) {
+				var pstr = "",
+					qn = bd.cell[c].qnum,
+					qu = bd.cell[c].ques;
+
+				if (qu === 7 || qn === 7) {
+					pstr = "_";
+				} else if (qn === -2) {
+					pstr = ".";
+				} else if (qn !== -1) {
+					pstr = qn.toString(10);
+				} else {
+					count++;
+				}
+
+				if (count === 0) {
+					cm += pstr;
+				} else if (pstr || count === 26) {
+					cm += (9 + count).toString(36) + pstr;
+					count = 0;
+				}
+			}
+			if (count > 0) {
+				cm += (9 + count).toString(36);
+			}
+
+			this.outbstr += cm;
+		}
+	},
+	"Encode@rampage": {
+		decodePzpr: function(type) {
+			this.decode();
+		},
+		encodePzpr: function(type) {
+			this.encode();
+		},
+		decode: function() {
+			for (var c = 0; c < this.board.cell.length; c++) {
+				this.board.cell[c].setQues(0);
+			}
+
+			var c = 0,
+				i = 0,
+				bstr = this.outbstr,
+				bd = this.board,
+				length = this.board.cell.length;
+			while (i < bstr.length && c < length) {
+				var cell = bd.cell[c],
+					ca = bstr.charAt(i);
+				var res = this.readNumber16(bstr, i);
+				if (res[0] !== -1) {
+					cell.qnum = res[0];
+					i += res[1];
+					c++;
+				} else if (ca >= "g" && ca <= "z") {
+					c += parseInt(ca, 36) - 15;
+					i++;
+				} else if (ca === "_") {
+					cell.ques = 7;
+					i++;
+					c++;
+				} else if (ca === "~") {
+					cell.qnum = -3;
+					i++;
+					c++;
+				} else {
+					i++;
+				}
+			}
+			this.outbstr = bstr.substr(i);
+		},
+		encode: function() {
+			var cm = "",
+				count = 0,
+				bd = this.board;
+			for (var c = 0; c < bd.cell.length; c++) {
+				var pstr = "",
+					qn = bd.cell[c].qnum,
+					qu = bd.cell[c].ques;
+
+				if (qu === 7 || (this.pid === "contact" && qn === 7)) {
+					pstr = "_";
+				} else if (qn === -2) {
+					pstr = ".";
+				} else if (qn === -3) {
+					pstr = "~";
+				} else if (qn !== -1) {
+					pstr = this.writeNumber16(qn);
+				} else {
+					count++;
+				}
+
+				if (count === 0) {
+					cm += pstr;
+				} else if (pstr || count === 20) {
+					cm += (15 + count).toString(36) + pstr;
+					count = 0;
+				}
+			}
+			if (count > 0) {
+				cm += (15 + count).toString(36);
+			}
+
+			this.outbstr += cm;
+		}
+	},
+	//---------------------------------------------------------
+	FileIO: {
+		decodeData: function() {
+			this.decodeCell(function(cell, ca) {
+				cell.ques = 0;
+				if (ca === "_") {
+					cell.ques = 7;
+				} else if (ca === "-") {
+					cell.qnum = -2;
+				} else if (ca === "~") {
+					cell.qnum = -3;
+				} else if (ca !== ".") {
+					cell.qnum = +ca;
+				}
+			});
+			this.decodeBorderAns();
+		},
+		encodeData: function() {
+			this.encodeCell(function(cell) {
+				if (cell.ques === 7) {
+					return "_ ";
+				} else if (cell.qnum === -2) {
+					return "- ";
+				} else if (cell.qnum === -3) {
+					return "~ ";
+				} else if (cell.qnum >= 0) {
+					return cell.qnum + " ";
+				} else {
+					return ". ";
+				}
+			});
+			this.encodeBorderAns();
+		}
+	},
+
+	//---------------------------------------------------------
+	// 正解判定処理実行部
+	AnsCheck: {
+		checklist: [
+			"checkOverTwoCells",
+			"checkLessTwoCells",
+			"checkSameNumberInRoom@contact",
+			"checkTouch@contact",
+			"checkRouteLen@rampage"
+		],
+		checkOverTwoCells: function() {
+			this.checkAllArea(
+				this.board.roommgr,
+				function(w, h, a, n) {
+					return a >= 2;
+				},
+				"bkSizeLt2"
+			);
+		},
+		checkLessTwoCells: function() {
+			this.checkAllArea(
+				this.board.roommgr,
+				function(w, h, a, n) {
+					return a <= 2;
+				},
+				"bkSizeGt2"
+			);
+		},
+		checkSameNumberInRoom: function() {
+			this.checkSameObjectInRoom(
+				this.board.roommgr,
+				function(cell) {
+					return cell.qnum;
+				},
+				"bkMixedNum"
+			);
+		},
+		checkTouch: function() {
+			this.checkAllCell(function(cell) {
+				if (!cell.isValidNum() || cell.room.clist.length !== 2) {
+					return false;
+				}
+
+				var clist = cell.getSurroundingDominoes();
+
+				var piececount = clist.length;
+				if (piececount !== cell.qnum) {
+					clist.each(function(c) {
+						c.room.clist.seterr(1);
+					});
+					var room = cell.room.clist;
+					room.seterr(1);
+					for (var i in room) {
+						for (var d in room[i].adjborder) {
+							if (room[i].adjborder[d].isBorder()) {
+								room[i].adjborder[d].seterr(1);
+							}
+						}
+					}
+					return true;
+				}
+				return false;
+			}, "anPiece");
+		},
+
+		checkRouteLen: function() {
+			for (var c = 0; c < this.board.cell.length; c++) {
+				var cell = this.board.cell[c];
+				if (!cell.isValidNum() || cell.room.clist.length !== 2) {
+					continue;
+				}
+
+				var route = cell.getBullRoute();
+				var routelen = cell.getBullRouteLen(route);
+
+				var err = false;
+				if (cell.qnum === -3) {
+					if (routelen !== -1) {
+						this.failcode.add("routeLenLoop");
+						err = true;
+					}
+				} else if (routelen === -1 || routelen > cell.qnum) {
+					this.failcode.add("routeLenGt");
+					err = true;
+				} else if (routelen !== -1 && routelen < cell.qnum) {
+					this.failcode.add("routeLenLt");
+					err = true;
+				}
+
+				if (err) {
+					this.puzzle.painter.paintRoute(route);
+				}
+			}
+		}
+	}
+});
diff --git a/src/variety/nawabari.js b/src/variety/nawabari.js
index 9495cfec2..6b10f3a6b 100644
--- a/src/variety/nawabari.js
+++ b/src/variety/nawabari.js
@@ -404,7 +404,6 @@
 			"checkLessFourCells@fourcells",
 			"checkLessFiveCells@fivecells"
 		],
-
 		checkOverThreeCells: function() {
 			this.checkAllArea(
 				this.board.roommgr,
diff --git a/test/script/contact.js b/test/script/contact.js
new file mode 100644
index 000000000..e010be535
--- /dev/null
+++ b/test/script/contact.js
@@ -0,0 +1,31 @@
+/* contact.js */
+
+ui.debug.addDebugData("contact", {
+	url: "6/5/a23h4f3h53a",
+	failcheck: [
+		[
+			"bkSizeGt2",
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 0 1 0 0 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 0 0 0 0 /1 1 1 1 1 1 /1 1 1 1 1 1 /1 1 1 1 1 1 /0 0 1 1 1 1 /0 0 0 0 0 0 /"
+		],
+		[
+			"bkSizeLt2",
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 1 0 /0 1 0 1 0 1 0 /0 0 0 0 0 0 /1 1 1 1 1 1 /1 1 1 1 1 1 /1 1 1 1 1 1 /1 1 1 1 1 0 /0 0 0 0 0 0 /"
+		],
+		[
+			"bkMixedNum",
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 1 0 1 1 0 0 /0 1 0 1 1 0 0 /0 0 1 0 1 0 0 /0 0 1 1 0 1 0 /0 0 1 1 0 1 0 /0 0 0 0 0 0 /0 1 1 0 1 1 /1 1 1 1 1 1 /1 1 1 1 1 1 /1 1 0 1 1 0 /0 0 0 0 0 0 /"
+		],
+		[
+			"anPiece",
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 1 1 1 1 0 0 /0 1 1 1 1 0 0 /0 0 1 0 1 1 0 /0 1 0 1 1 1 0 /0 1 0 1 1 0 0 /0 0 0 0 0 0 /0 0 0 0 1 1 /1 1 1 1 1 1 /1 1 1 1 0 0 /0 1 1 0 1 1 /0 0 0 0 0 0 /"
+		],
+		[
+			"anPiece",
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 0 1 0 1 1 0 /0 0 1 0 1 1 0 /0 0 1 0 1 1 0 /0 1 0 1 1 1 0 /0 1 0 1 1 0 0 /0 0 0 0 0 0 /1 1 1 1 0 0 /1 1 1 1 1 1 /1 1 1 1 0 0 /0 1 1 0 1 1 /0 0 0 0 0 0 /"
+		],
+		[
+			null,
+			"pzprv3/contact/5/6/. 2 3 . . . /. . . . . 4 /. . . . . . /3 . . . . . /. . . 5 3 . /0 0 1 0 1 0 0 /0 0 1 0 1 0 0 /0 0 1 0 1 1 0 /0 1 0 1 1 1 0 /0 1 0 1 1 0 0 /0 0 0 0 0 0 /1 1 1 1 1 1 /1 1 1 1 1 1 /1 1 1 1 0 0 /0 1 1 0 1 1 /0 0 0 0 0 0 /"
+		]
+	]
+});
diff --git a/test/script/rampage.js b/test/script/rampage.js
new file mode 100644
index 000000000..b39aa1354
--- /dev/null
+++ b/test/script/rampage.js
@@ -0,0 +1,31 @@
+/* rampage.js */
+
+ui.debug.addDebugData("rampage", {
+	url: "6/6/g1k2i2r3i1k4g",
+	failcheck: [
+		[
+			"bkSizeGt2",
+			"pzprv3/rampage/6/6/. 1 . . . . /. 2 . . . 2 /. . . . . . /. . . . . . /3 . . . 1 . /. . . . 4 . /0 0 1 1 1 0 0 /0 0 1 1 1 0 0 /0 0 1 1 0 1 0 /0 0 1 1 0 1 0 /0 0 1 1 1 0 0 /0 0 1 1 1 0 0 /0 0 0 0 0 0 /1 1 0 0 1 1 /1 1 1 1 1 0 /0 0 0 1 1 0 /1 1 1 1 1 1 /1 1 0 0 1 1 /0 0 0 0 0 0 /"
+		],
+		[
+			"bkSizeLt2",
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+});