diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/Example.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/Example.kt
index 6105437..0164f2e 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/Example.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/Example.kt
@@ -1,4 +1,13 @@
 package com.github.insanusmokrassar.PsychomatrixBase
 
+import com.github.insanusmokrassar.PsychomatrixBase.domain.entities.MutablePsychomatrix
+import com.github.insanusmokrassar.PsychomatrixBase.domain.entities.operations.TwoGrowFour
+import kotlinx.coroutines.experimental.runBlocking
+import org.joda.time.DateTime
+
 fun main(args: Array<String>) {
+    val psychomatrix = MutablePsychomatrix(DateTime.now().withDate(2022, 12, 22))
+    runBlocking {
+        println(psychomatrix.availableOperations.await())
+    }
 }
diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/domain/entities/Psychomatrix.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/domain/entities/Psychomatrix.kt
index f88c2ad..0093c4e 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/domain/entities/Psychomatrix.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/domain/entities/Psychomatrix.kt
@@ -186,4 +186,8 @@ open class Psychomatrix(val date: DateTime) {
                         getDownDiagSum()
                 )
     }
+
+    override fun equals(other: Any?): Boolean {
+        return super.equals(other) || (other as? Psychomatrix) ?.date == date
+    }
 }