diff --git a/a2sudoku.xcodeproj/project.pbxproj b/a2sudoku.xcodeproj/project.pbxproj
index 74487f1..43abe2f 100644
--- a/a2sudoku.xcodeproj/project.pbxproj
+++ b/a2sudoku.xcodeproj/project.pbxproj
@@ -7,162 +7,166 @@
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+				9DAE6F2222FD2551007BD489 /* make */,
+				9DAE6F3922FD2551007BD489 /* Supporting Files */,
 			);
 			path = a2sudoku;
 			sourceTree = "<group>";
 		};
-		9D4594B322FBC89E006A56AD /* make */ = {
+		9DAE6F2222FD2551007BD489 /* make */ = {
 			isa = PBXGroup;
 			children = (
-				9D4594B422FBC89E006A56AD /* AppleCommander.jar */,
-				9D4594B622FBC89E006A56AD /* bastokenizer-tools-bt-0.2.0.jar */,
-				9D4594B822FBC89E006A56AD /* createDiskImage */,
-				9D4594BA22FBC89E006A56AD /* bt */,
-				9D4594BC22FBC89E006A56AD /* DevApple.vii */,
-				9D4594BE22FBC89E006A56AD /* dos33_template.dsk */,
-				9D4594C022FBC89E006A56AD /* errorFilter.sh */,
-				9D4594C222FBC89E006A56AD /* head.mk */,
-				9D4594C422FBC89E006A56AD /* prodos_template.dsk */,
-				9D4594C622FBC89E006A56AD /* tail.mk */,
-				9D4594C822FBC89E006A56AD /* V2Make.scpt */,
+				9DAE6F2322FD2551007BD489 /* AppleCommander.jar */,
+				9DAE6F2522FD2551007BD489 /* bastokenizer-tools-bt-0.2.0.jar */,
+				9DAE6F2722FD2551007BD489 /* createDiskImage */,
+				9DAE6F2922FD2551007BD489 /* bt */,
+				9DAE6F2B22FD2551007BD489 /* DevApple.vii */,
+				9DAE6F2D22FD2551007BD489 /* dos33_template.dsk */,
+				9DAE6F2F22FD2551007BD489 /* errorFilter.sh */,
+				9DAE6F3122FD2551007BD489 /* head.mk */,
+				9DAE6F3322FD2551007BD489 /* prodos_template.dsk */,
+				9DAE6F3522FD2551007BD489 /* tail.mk */,
+				9DAE6F3722FD2551007BD489 /* V2Make.scpt */,
 			);
 			name = make;
 			sourceTree = "<group>";
 		};
-		9D4594CA22FBC89E006A56AD /* Supporting Files */ = {
+		9DAE6F3922FD2551007BD489 /* Supporting Files */ = {
 			isa = PBXGroup;
 			children = (
-				9D4594CB22FBC89E006A56AD /* a2sudoku.xcscheme */,
+				9DAE6F3A22FD2551007BD489 /* a2sudoku.xcscheme */,
 			);
 			name = "Supporting Files";
 			sourceTree = "<group>";
 		};
-		9D4594E822FBC8E4006A56AD /* puzzles */ = {
+		9DAE6F5F22FD258D007BD489 /* puzzles */ = {
 			isa = PBXGroup;
 			children = (
-				9D4594E122FBC8D3006A56AD /* generateSudoku.pl */,
-				9D4594DB22FBC8D3006A56AD /* puzzles.c */,
-				9D4594D922FBC8D2006A56AD /* puzzles.h */,
-				9D4594DF22FBC8D3006A56AD /* puzzles.txt */,
+				9DAE6F4D22FD257E007BD489 /* generateSudoku.pl */,
+				9DAE6F5022FD257E007BD489 /* puzzles.c */,
+				9DAE6F4F22FD257E007BD489 /* puzzles.h */,
+				9DAE6F5222FD257E007BD489 /* puzzles.txt */,
 			);
 			name = puzzles;
 			sourceTree = "<group>";
@@ -170,10 +174,10 @@
 /* End PBXGroup section */
 
 /* Begin PBXLegacyTarget section */
-		9D4594A722FBC89E006A56AD /* a2sudoku */ = {
+		9DAE6F1222FD2551007BD489 /* a2sudoku */ = {
 			isa = PBXLegacyTarget;
 			buildArgumentsString = "-C a2sudoku $(ACTION)";
-			buildConfigurationList = 9D4594CF22FBC89E006A56AD /* Build configuration list for PBXLegacyTarget "a2sudoku" */;
+			buildConfigurationList = 9DAE6F3E22FD2551007BD489 /* Build configuration list for PBXLegacyTarget "a2sudoku" */;
 			buildPhases = (
 			);
 			buildToolPath = /usr/bin/make;
@@ -186,13 +190,41 @@
 /* End PBXLegacyTarget section */
 
 /* Begin PBXNativeTarget section */
-		9D4594AB22FBC89E006A56AD /* doNotBuild */ = {
+		9DAE6F1322FD2551007BD489 /* Binary */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = 9D4594D222FBC89E006A56AD /* Build configuration list for PBXNativeTarget "doNotBuild" */;
+			buildConfigurationList = 9DAE6F4122FD2551007BD489 /* Build configuration list for PBXNativeTarget "Binary" */;
 			buildPhases = (
-				9D4594A822FBC89E006A56AD /* Sources */,
-				9D4594A922FBC89E006A56AD /* Frameworks */,
-				9D4594AA22FBC89E006A56AD /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = Binary;
+			productName = Binary;
+			productReference = 9DAE6F1422FD2551007BD489 /* a2sudoku */;
+			productType = "com.apple.product-type.tool";
+		};
+		9DAE6F1622FD2551007BD489 /* DiskImage */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 9DAE6F4422FD2551007BD489 /* Build configuration list for PBXNativeTarget "DiskImage" */;
+			buildPhases = (
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = DiskImage;
+			productName = DiskImage;
+			productReference = 9DAE6F1722FD2551007BD489 /* a2sudoku.dsk */;
+			productType = "com.apple.product-type.tool";
+		};
+		9DAE6F1B22FD2551007BD489 /* doNotBuild */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 9DAE6F4722FD2551007BD489 /* Build configuration list for PBXNativeTarget "doNotBuild" */;
+			buildPhases = (
+				9DAE6F1822FD2551007BD489 /* Sources */,
+				9DAE6F1922FD2551007BD489 /* Frameworks */,
+				9DAE6F1A22FD2551007BD489 /* CopyFiles */,
 			);
 			buildRules = (
 			);
@@ -200,62 +232,70 @@
 			);
 			name = doNotBuild;
 			productName = doNotBuild;
-			productReference = 9D4594AC22FBC89E006A56AD /* doNotBuild */;
+			productReference = 9DAE6F1C22FD2551007BD489 /* doNotBuild */;
 			productType = "com.apple.product-type.tool";
 		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
-		9D4594A322FBC89E006A56AD /* Project object */ = {
+		9DAE6F0E22FD2551007BD489 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
 				LastUpgradeCheck = 1030;
 				ORGANIZATIONNAME = "Jeremy Rand";
 				TargetAttributes = {
-					9D4594A722FBC89E006A56AD = {
+					9DAE6F1222FD2551007BD489 = {
 						CreatedOnToolsVersion = 10.3;
 					};
-					9D4594AB22FBC89E006A56AD = {
+					9DAE6F1322FD2551007BD489 = {
+						CreatedOnToolsVersion = 10.3;
+					};
+					9DAE6F1622FD2551007BD489 = {
+						CreatedOnToolsVersion = 10.3;
+					};
+					9DAE6F1B22FD2551007BD489 = {
 						CreatedOnToolsVersion = 10.3;
 					};
 				};
 			};
-			buildConfigurationList = 9D4594A622FBC89E006A56AD /* Build configuration list for PBXProject "a2sudoku" */;
+			buildConfigurationList = 9DAE6F1122FD2551007BD489 /* Build configuration list for PBXProject "a2sudoku" */;
 			compatibilityVersion = "Xcode 9.3";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
 			);
-			mainGroup = 9D4594A222FBC89E006A56AD;
-			productRefGroup = 9D4594AD22FBC89E006A56AD /* Products */;
+			mainGroup = 9DAE6F0D22FD2551007BD489;
+			productRefGroup = 9DAE6F1522FD2551007BD489 /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
 			targets = (
-				9D4594A722FBC89E006A56AD /* a2sudoku */,
-				9D4594AB22FBC89E006A56AD /* doNotBuild */,
+				9DAE6F1222FD2551007BD489 /* a2sudoku */,
+				9DAE6F1322FD2551007BD489 /* Binary */,
+				9DAE6F1622FD2551007BD489 /* DiskImage */,
+				9DAE6F1B22FD2551007BD489 /* doNotBuild */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXSourcesBuildPhase section */
-		9D4594A822FBC89E006A56AD /* Sources */ = {
+		9DAE6F1822FD2551007BD489 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				9D4594E622FBC8D4006A56AD /* main.c in Sources */,
-				9D4594B222FBC89E006A56AD /* Makefile in Sources */,
-				9D4594E422FBC8D4006A56AD /* ui.c in Sources */,
-				9D4594E722FBC8D4006A56AD /* game.c in Sources */,
-				9D4594E322FBC8D4006A56AD /* mouseWrapper.c in Sources */,
-				9D4594E522FBC8D4006A56AD /* puzzles.c in Sources */,
+				9DAE6F5922FD257E007BD489 /* mouseWrapper.c in Sources */,
+				9DAE6F5A22FD257E007BD489 /* puzzles.c in Sources */,
+				9DAE6F5C22FD257E007BD489 /* Makefile in Sources */,
+				9DAE6F5E22FD257E007BD489 /* game.c in Sources */,
+				9DAE6F5B22FD257E007BD489 /* main.c in Sources */,
+				9DAE6F5D22FD257E007BD489 /* ui.c in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXSourcesBuildPhase section */
 
 /* Begin XCBuildConfiguration section */
-		9D4594CD22FBC89E006A56AD /* Debug */ = {
+		9DAE6F3C22FD2551007BD489 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
@@ -311,7 +351,7 @@
 			};
 			name = Debug;
 		};
-		9D4594CE22FBC89E006A56AD /* Release */ = {
+		9DAE6F3D22FD2551007BD489 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
@@ -360,7 +400,7 @@
 			};
 			name = Release;
 		};
-		9D4594D022FBC89E006A56AD /* Debug */ = {
+		9DAE6F3F22FD2551007BD489 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
@@ -375,7 +415,7 @@
 			};
 			name = Debug;
 		};
-		9D4594D122FBC89E006A56AD /* Release */ = {
+		9DAE6F4022FD2551007BD489 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
@@ -387,7 +427,43 @@
 			};
 			name = Release;
 		};
-		9D4594D322FBC89E006A56AD /* Debug */ = {
+		9DAE6F4222FD2551007BD489 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = VD9FGCW36C;
+				PRODUCT_NAME = a2sudoku;
+			};
+			name = Debug;
+		};
+		9DAE6F4322FD2551007BD489 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = VD9FGCW36C;
+				PRODUCT_NAME = a2sudoku;
+			};
+			name = Release;
+		};
+		9DAE6F4522FD2551007BD489 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = VD9FGCW36C;
+				PRODUCT_NAME = a2sudoku.dsk;
+			};
+			name = Debug;
+		};
+		9DAE6F4622FD2551007BD489 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = VD9FGCW36C;
+				PRODUCT_NAME = a2sudoku.dsk;
+			};
+			name = Release;
+		};
+		9DAE6F4822FD2551007BD489 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
@@ -401,7 +477,7 @@
 			};
 			name = Debug;
 		};
-		9D4594D422FBC89E006A56AD /* Release */ = {
+		9DAE6F4922FD2551007BD489 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
@@ -418,34 +494,52 @@
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
-		9D4594A622FBC89E006A56AD /* Build configuration list for PBXProject "a2sudoku" */ = {
+		9DAE6F1122FD2551007BD489 /* Build configuration list for PBXProject "a2sudoku" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				9D4594CD22FBC89E006A56AD /* Debug */,
-				9D4594CE22FBC89E006A56AD /* Release */,
+				9DAE6F3C22FD2551007BD489 /* Debug */,
+				9DAE6F3D22FD2551007BD489 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		9D4594CF22FBC89E006A56AD /* Build configuration list for PBXLegacyTarget "a2sudoku" */ = {
+		9DAE6F3E22FD2551007BD489 /* Build configuration list for PBXLegacyTarget "a2sudoku" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				9D4594D022FBC89E006A56AD /* Debug */,
-				9D4594D122FBC89E006A56AD /* Release */,
+				9DAE6F3F22FD2551007BD489 /* Debug */,
+				9DAE6F4022FD2551007BD489 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		9D4594D222FBC89E006A56AD /* Build configuration list for PBXNativeTarget "doNotBuild" */ = {
+		9DAE6F4122FD2551007BD489 /* Build configuration list for PBXNativeTarget "Binary" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				9D4594D322FBC89E006A56AD /* Debug */,
-				9D4594D422FBC89E006A56AD /* Release */,
+				9DAE6F4222FD2551007BD489 /* Debug */,
+				9DAE6F4322FD2551007BD489 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		9DAE6F4422FD2551007BD489 /* Build configuration list for PBXNativeTarget "DiskImage" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				9DAE6F4522FD2551007BD489 /* Debug */,
+				9DAE6F4622FD2551007BD489 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		9DAE6F4722FD2551007BD489 /* Build configuration list for PBXNativeTarget "doNotBuild" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				9DAE6F4822FD2551007BD489 /* Debug */,
+				9DAE6F4922FD2551007BD489 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};
-	rootObject = 9D4594A322FBC89E006A56AD /* Project object */;
+	rootObject = 9DAE6F0E22FD2551007BD489 /* Project object */;
 }
diff --git a/a2sudoku.xcodeproj/project.xcworkspace/xcuserdata/jrand.xcuserdatad/UserInterfaceState.xcuserstate b/a2sudoku.xcodeproj/project.xcworkspace/xcuserdata/jrand.xcuserdatad/UserInterfaceState.xcuserstate
index 9f0ccd6..7b1b534 100644
Binary files a/a2sudoku.xcodeproj/project.xcworkspace/xcuserdata/jrand.xcuserdatad/UserInterfaceState.xcuserstate and b/a2sudoku.xcodeproj/project.xcworkspace/xcuserdata/jrand.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/a2sudoku.xcodeproj/xcuserdata/jrand.xcuserdatad/xcschemes/xcschememanagement.plist b/a2sudoku.xcodeproj/xcuserdata/jrand.xcuserdatad/xcschemes/xcschememanagement.plist
index 887de41..33a1e98 100644
--- a/a2sudoku.xcodeproj/xcuserdata/jrand.xcuserdatad/xcschemes/xcschememanagement.plist
+++ b/a2sudoku.xcodeproj/xcuserdata/jrand.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -4,6 +4,16 @@
 <dict>
 	<key>SchemeUserState</key>
 	<dict>
+		<key>Binary.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>1</integer>
+		</dict>
+		<key>DiskImage.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>2</integer>
+		</dict>
 		<key>a2sudoku.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
@@ -12,7 +22,7 @@
 		<key>doNotBuild.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>3</integer>
 		</dict>
 	</dict>
 </dict>
diff --git a/a2sudoku/make/DevApple.vii b/a2sudoku/make/DevApple.vii
index 4f487a9..5432bb5 100644
Binary files a/a2sudoku/make/DevApple.vii and b/a2sudoku/make/DevApple.vii differ
diff --git a/a2sudoku/make/V2Make.scpt b/a2sudoku/make/V2Make.scpt
index e3e82d4..dd98919 100644
Binary files a/a2sudoku/make/V2Make.scpt and b/a2sudoku/make/V2Make.scpt differ