diff --git a/transpiler/src/main/eo/preface/pybool.eo b/transpiler/src/main/eo/preface/pybool.eo
index 57a9cb001..e00d926c5 100644
--- a/transpiler/src/main/eo/preface/pybool.eo
+++ b/transpiler/src/main/eo/preface/pybool.eo
@@ -34,6 +34,9 @@
   [] > as-string
     value.as-string > @
 
+  [] > as-bool
+    pybool value > @
+
   [] > force
     value.write val > @
 
diff --git a/transpiler/src/main/eo/preface/pyint.eo b/transpiler/src/main/eo/preface/pyint.eo
index 559ae18da..31f139676 100644
--- a/transpiler/src/main/eo/preface/pyint.eo
+++ b/transpiler/src/main/eo/preface/pyint.eo
@@ -72,6 +72,9 @@
         pyint (value.pow (x.value))
         p.fst.pow (p.snd)
 
+  [] > bitwise-not
+    pyint ((value.as-bytes.not).as-int) > @
+
   [x] > and
     fakeclasses.convert (pyint value) x > p
     seq > @
@@ -226,6 +229,13 @@
   [] > force
     value.write val > @
 
+  [] > xto-int
+    [] > apply
+      [stackUp] > @
+        seq > @
+          stackUp.forward (return (pyint value))
+          123
+
   seq > @
     stdout (sprintf "dataizing value %d\n" value)
     value
diff --git a/transpiler/src/main/eo/preface/pystring.eo b/transpiler/src/main/eo/preface/pystring.eo
index c5c8cf9cc..11f53053f 100644
--- a/transpiler/src/main/eo/preface/pystring.eo
+++ b/transpiler/src/main/eo/preface/pystring.eo
@@ -7,6 +7,7 @@
 +alias fakeclasses preface.fakeclasses
 +alias xmyArray preface.xmyArray
 +alias xStopIteration preface.xStopIteration
++alias xValueError preface.xValueError
 
 [value] > pystring
 
@@ -27,6 +28,9 @@
   [] > as-string
     pystring value > @
 
+  [] > as-bool
+    pybool ((value.length.eq 0).not) > @
+
   [] > force
     value > @
 
@@ -74,6 +78,37 @@
       [stackUp] > @
         stackUp.forward (return iter) > @
 
+  [] > xto-int
+    [] > apply
+      [stackUp] > @
+        (* "0" "1" "2" "3" "4" "5" "6" "7" "8" "9") > digits
+        [s] > to-digit
+          memory 0 > result
+          seq > @
+            while.
+              ((result.lt 10).and (((digits.get result).eq s).not))
+              [unused]
+                seq > @
+                  stdout (sprintf "result %d\n" result)
+                  result.write (result.plus 1)
+                  0
+            result
+        memory 0 > result
+        memory TRUE > input-is-correct
+        memory 0 > i
+        seq > @
+          (i.lt (value.length)).while
+            [unused]
+              value.slice i 1 > x
+              to-digit x > dig
+              seq > @
+                input-is-correct.write (input-is-correct.and (dig.lt 10))
+                result.write ((result.times 10).plus dig)
+                i.write (i.plus 1)
+                123
+          stackUp.forward (input-is-correct.if (return (pyint value)) ((goto (xValueError.apply.@)).result))
+          123
+
   seq > @
     stdout (sprintf "dataizing value %s\n" value)
     value
diff --git a/transpiler/src/main/eo/preface/xint.eo b/transpiler/src/main/eo/preface/xint.eo
index f8032f9c3..5b269e046 100644
--- a/transpiler/src/main/eo/preface/xint.eo
+++ b/transpiler/src/main/eo/preface/xint.eo
@@ -1,11 +1,11 @@
 +package preface
 +alias fakeclasses preface.fakeclasses
-+alias return preface.return
++alias goto org.eolang.goto
 
 [] > xint
   fakeclasses.pyIntClass > @
   [x] > apply
     [stackUp] > @
       seq > @
-        stackUp.forward (return x)
+        stackUp.forward (goto (x.xto-int.apply.@))
         123
diff --git a/transpiler/src/main/eo/preface/xmyArray.eo b/transpiler/src/main/eo/preface/xmyArray.eo
index a3b47c672..0530b9603 100644
--- a/transpiler/src/main/eo/preface/xmyArray.eo
+++ b/transpiler/src/main/eo/preface/xmyArray.eo
@@ -43,6 +43,24 @@
                 self.value.write (tmp.copy.with (x.with-value (tmpx.copy)))
                 stackUp.forward (return 0)
                 123
+        [] > xremove
+          [self what] > apply
+            [stackUp] > @
+              memory FALSE > removed
+              (goto ((xmyArray.apply (*)).@)).result > accum
+              memory 0 > i
+              seq > @
+                (i.lt (self.value.length)).while
+                  [unused]
+                    self.value.get i > x
+                    seq > @
+                      ((x.eq what).value.and (removed.not)).if
+                        removed.write TRUE
+                        (goto ((accum.xappend.apply accum x).@)).result
+                      i.write (i.plus 1)
+                self.value.write (accum.value)
+                stackUp.forward (return 0)
+                123
         [] > xclear
           [self] > apply
             [stackUp] > @
diff --git a/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintEO.scala b/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintEO.scala
index f02b48c2f..0068defb8 100644
--- a/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintEO.scala
+++ b/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintEO.scala
@@ -45,7 +45,7 @@ object PrintEO {
 
   def unop(t: Unops.T): String = t match {
     case Unops.Minus => ".neg"
-    case Unops.Neg => ".unsupported"
+    case Unops.Neg => ".bitwise-not"
     case Unops.LNot => ".not"
     case Unops.Plus => ""
   }
@@ -107,7 +107,7 @@ object PrintEO {
       case CallIndex(isCall, whom, args, _) if !isCall && args.size == 1 =>
         orb + e(whom) + ".get " + e(args(0)._2) + crb
       case Field(whose, name, _) => orb + e(whose) + "." + name + crb
-      case Cond(cond, yes, no, _) => orb + e(cond) + ".if " + e(yes) + space + e(no) + crb
+      case Cond(cond, yes, no, _) => orb + e(cond) + ".as-bool.if " + e(yes) + space + e(no) + crb
       case CallIndex(true, whom, args, _)  =>
         "((" + e(whom) + crb + ".apply" +
           // todo: empty arg list hack
diff --git a/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintLinearizedMutableEOWithCage.scala b/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintLinearizedMutableEOWithCage.scala
index 954c5fd97..e9da60bd1 100644
--- a/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintLinearizedMutableEOWithCage.scala
+++ b/transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintLinearizedMutableEOWithCage.scala
@@ -9,8 +9,9 @@ import org.polystat.py2eo.parser.Expression.{
   Field, GeneratorComprehension, Ident, Parameter, Slice, Star, T, isLiteral
 }
 import org.polystat.py2eo.parser.Statement.{
-  AugAssign, Assign, Break, ClassDef, Decorators, FuncDef, IfSimple, NonLocal, Pass,
-  Raise, Return, Suite, Try, While, Continue
+  AnnAssign, AugAssign, Assign, Break, ClassDef, Decorators,
+  FuncDef, IfSimple, NonLocal, Pass, Raise, Return, Suite, Try,
+  While, Continue
 }
 
 object PrintLinearizedMutableEOWithCage {
@@ -89,7 +90,7 @@ object PrintLinearizedMutableEOWithCage {
         }
         val callInit = init match {
           case None => ""
-          case Some(_) => s" (goto ((result.x__init__.apply pResult $consArgs).@))"
+          case Some(_) => s" ((goto ((result.x__init__.apply pResult $consArgs).@)).result)"
         }
         val decorates = bases.headOption.map(_._2)
           "write." :: indent(
@@ -131,6 +132,8 @@ object PrintLinearizedMutableEOWithCage {
           )
       case NonLocal(_, _) => List()
       case f: FuncDef => "write." :: indent(f.name :: printFun(List(), f))
+      case AnnAssign(lhs, rhsAnn, Some(rhs), ann) =>
+        printSt(Assign(List(lhs, rhs), ann.pos))
       case AugAssign(op, lhs, rhs, ann) =>
         List(s"(${pe(lhs)}).${augop(op)} (${pe(rhs)})")
       case Assign(List(lhs, rhs@Expression.Binop(op, _, _, _)), ann) if
@@ -189,7 +192,7 @@ object PrintLinearizedMutableEOWithCage {
       case IfSimple(cond, yes, no, _) =>
         val stsY = printSt(yes)
         val stsN = printSt(no)
-        pe(cond) + ".if" :: indent("seq" :: indent(stsY :+ "(pybool TRUE)")) ++ indent("seq" :: indent(stsN :+ "(pybool TRUE)"))
+        pe(cond) + ".as-bool.if" :: indent("seq" :: indent(stsY :+ "(pybool TRUE)")) ++ indent("seq" :: indent(stsN :+ "(pybool TRUE)"))
       case While(cond, body, Some(Pass(_)), _) =>
         "write." :: indent(
           "tmp" ::
@@ -197,7 +200,7 @@ object PrintLinearizedMutableEOWithCage {
             "[stackUp]" :: indent(
               "seq > @" :: indent(
                 (
-                  pe(cond) + ".while" :: indent(
+                  pe(cond) + ".as-bool.while" :: indent(
                     "[unused]" ::
                     indent(
                       "cage 0 > tmp" ::
@@ -306,7 +309,7 @@ object PrintLinearizedMutableEOWithCage {
               "seq > @" :: indent(
                 ("stdout \"" + f.name + "\\n\"") ::
                 f.args.map(parm => s"${parm.name}.<") ++
-                (printSt(f.body) :+ "123")
+                (printSt(f.body) :+ "stackUp.forward (return 0)" :+ "123")
               )
             )
           )
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/conditional/conditional-2.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/conditional/conditional-2.yaml
index 639049ddb..722435ae0 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/conditional/conditional-2.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/conditional/conditional-2.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def cond2():
       b = 2
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/unary-operators/unary-invert.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/unary-operators/unary-invert.yaml
index c0a9c4176..846b43afc 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/unary-operators/unary-invert.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/unary-operators/unary-invert.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def unaryInvert():
     a = 2
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/for_try_else_continue_break.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/for_try_else_continue_break.yaml
index 8506aeaa1..16325567f 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/for_try_else_continue_break.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/for_try_else_continue_break.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def for_try_else_continue_break():
     items = [1, 2, 3, 4, 5, 6, 7, "hello", 100, 200, 300, 400]
@@ -17,4 +17,4 @@ python: |
     else:
       res.append(800)
     
-    return res == [1, 2, 3, 4, 5, 6, 7]
\ No newline at end of file
+    return res == [1, 2, 3, 4, 5, 6, 7]
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/while_try_else_continue_break.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/while_try_else_continue_break.yaml
index fb39a633a..45b04467a 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/while_try_else_continue_break.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break-continue/while_try_else_continue_break.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def while_try_else_continue_break():
     items = [1, 2, 3, 4, 5, 6, 7, "hello", 100, 200, 300, 400]
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break/for_try_else_break.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break/for_try_else_break.yaml
index baf2b5281..82302e5f3 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break/for_try_else_break.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/break/for_try_else_break.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def for_try_else_break():
     items = [1, 2, 3, 4, 5, 6, 7, "hello", 1, 2, 3, 4]
@@ -12,4 +12,4 @@ python: |
     else:
       res.remove(100)
     
-    return res == [1, 2, 3, 4, 5, 6, 7, 100]
\ No newline at end of file
+    return res == [1, 2, 3, 4, 5, 6, 7, 100]
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/continue/for_try_else_continue1.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/continue/for_try_else_continue1.yaml
index 8cd95b0a6..5f0dd3d70 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/continue/for_try_else_continue1.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/continue/for_try_else_continue1.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def for_try_else_continue1():
     items = [1, 2, 3, 4, 5, 6, 7, "hello", 100, 200, 300, 400]
@@ -10,5 +10,5 @@ python: |
         continue
     else:
       res.remove(100)
-    
-    return res == [1, 2, 3, 4, 5, 6, 7, 200, 300, 400]
\ No newline at end of file
+
+    return res == [1, 2, 3, 4, 5, 6, 7, 200, 300, 400]
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-1.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-1.yaml
index b4310bde4..41d776e49 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-1.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-1.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def check():
     a: Int = 5
@@ -10,4 +10,4 @@ python: |
       a = 1
       print("Hi!")
   
-    return a == 1
\ No newline at end of file
+    return a == 1
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-2.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-2.yaml
index 32ecf4588..876523d1b 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-2.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/expression-statement/expression-statement-2.yaml
@@ -1,7 +1,7 @@
-enabled: False
+enabled: True
 python: |
   def check():
     a = 5
     b = 17
     c = a + b
-    return c == a + b
\ No newline at end of file
+    return c == a + b
diff --git a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/nonlocal/nonlocal.yaml b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/nonlocal/nonlocal.yaml
index 27bc7109d..aaab5dd8c 100644
--- a/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/nonlocal/nonlocal.yaml
+++ b/transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/simple-statements/nonlocal/nonlocal.yaml
@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def nonLocal():
     x = 0