Didier Loiseau created DROOLS-4849: -------------------------------------- Summary: SudokuExample cannot solve hard samples any more in Drools 7 Key: DROOLS-4849 URL: https://issues.redhat.com/browse/DROOLS-4849 Project: Drools Issue Type: Bug Affects Versions: 7.30.0.Final Reporter: Didier Loiseau Assignee: Mario Fusco It appears {{SudokuExample}} is capable to resolve the Simple and Medium samples, but none of the Hard ones. They resolve a few cells but end with {quote} Sorry - can't solve this grid. {quote} in the console. With explain = true, I can see that the "single" and "hidden single" rules fire (not always both, depends on the puzzle), but clearly when it stops, at least the latter should still fire for some cells. There is also a small bug in the code, which is that the {{unsolvable}} flag is not reset during setup, so when you get the above error you also get it for any other example you solve afterwards. I have checked with Drools 6.5.0.Final (checked out the examples from GitHub) and the solver works fine. The Sudoku example appears to be mostly the same though. I am running the examples with Java 8 from IntelliJ or command line, if that matters. I tested this on 2 different machines. It is a bit unfortunate because it is the first example in the GUI. Full console output for sample Hard 1: {code} 12:14:28.256 [main] INFO o.d.c.k.b.impl.ClasspathKieProject.notifyKieModuleFound:133 - Found kmodule: file:/C:/Users/Public/Documents/projects/drools/drools-examples/target/classes/META-INF/kmodule.xml 12:14:30.424 [main] WARN o.d.c.k.b.impl.ClasspathKieProject.getPomPropertiesFromFileSystem:322 - Unable to find pom.properties in /C:/Users/Public/Documents/projects/drools/drools-examples/target/classes 12:14:30.475 [main] INFO o.d.c.k.b.impl.ClasspathKieProject.generatePomPropertiesFromPom:354 - Recursed up folders, found and used pom.xml C:\Users\Public\Documents\projects\drools\drools-examples\pom.xml 12:14:42.619 [AWT-EventQueue-0] WARN o.d.c.k.builder.impl.KieBuilderImpl.packageNameForFile:394 - File 'org/drools/games/wumpus/server/paintCave.drl' is in folder 'org/drools/games/wumpus/server' but declares package 'org.drools.games.wumpus.server.view'. It is advised to have a correspondance between package and folder names. 12:14:42.632 [AWT-EventQueue-0] WARN o.d.c.k.builder.impl.KieBuilderImpl.packageNameForFile:394 - File 'org/drools/games/wumpus/server/paintSensor.drl' is in folder 'org/drools/games/wumpus/server' but declares package 'org.drools.games.wumpus.server.view'. It is advised to have a correspondance between package and folder names. 12:14:42.687 [AWT-EventQueue-0] WARN o.d.c.k.builder.impl.KieBuilderImpl.packageNameForFile:394 - File 'org/drools/games/wumpus/server/ui.drl' is in folder 'org/drools/games/wumpus/server' but declares package 'org.drools.games.wumpus.server.view'. It is advised to have a correspondance between package and folder names. Validation complete. Col: 0 Col: 1 Col: 2 Col: 3 Col: 4 Col: 5 Col: 6 Col: 7 Col: 8 Row 0: 2 4 7 9 2 4 6 4 67 9 23 6 9 --- 5 --- --- 1 --- 3 67 9 --- 8 --- 4 67 Row 1: 12 7 9 --- 8 --- 1 67 9 23 6 9 --- 4 --- 23 6 1 3 67 9 3 67 9 --- 5 --- Row 2: 1 4 9 1 456 --- 3 --- 6 89 --- 7 --- 6 8 --- 2 --- 4 6 9 1 4 6 Row 3: 1234 1234 1 4 1 5 8 --- 6 --- 5 78 5 7 45 7 --- 9 --- Row 4: --- 6 --- --- 7 --- --- 5 --- --- 4 --- --- 2 --- --- 9 --- --- 8 --- --- 1 --- --- 3 --- Row 5: --- 8 --- 12 4 1 4 9 1 5 --- 3 --- 5 7 567 4567 2 4 67 Row 6: 1 3 7 1 3 6 --- 2 --- 3 56 --- 8 --- 3 56 --- 4 --- 3 567 9 1 67 Row 7: --- 5 --- 1 34 6 1 4 678 3 6 --- 9 --- 34 6 1 3 67 --- 2 --- 1 678 Row 8: 34 --- 9 --- 4 6 8 --- 7 --- --- 1 --- 23456 3 56 3 56 6 8 Sorry - can't solve this grid. {code} -- This message was sent by Atlassian Jira (v7.13.8#713008)