diff --git a/subjects/printrevcombprog.en.md b/subjects/printrevcombprog.en.md
index 0881f941..a063c130 100644
--- a/subjects/printrevcombprog.en.md
+++ b/subjects/printrevcombprog.en.md
@@ -1,4 +1,4 @@
-## printrevcombprog
+## printrevcomb
 
 ### Instructions
 
@@ -11,10 +11,10 @@ These combinations are separated by a comma and a space.
 Here is an **incomplete** output :
 
 ```console
-student@ubuntu:~/[[ROOT]]/printcombprog$ go build
-student@ubuntu:~/[[ROOT]]/printcombprog$ ./printcombprog | cat -e
+student@ubuntu:~/[[ROOT]]/printrevcomb$ go build
+student@ubuntu:~/[[ROOT]]/printrevcomb$ ./printrevcomb | cat -e
 987, 986, 985, 984, 983, 982, 981, 980, 976, ..., 310, 210$
-student@ubuntu:~/[[ROOT]]/printcombprog$
+student@ubuntu:~/[[ROOT]]/printrevcomb$
 ```
 
 `999` or `000` are not valid combinations because the digits are not different.
diff --git a/subjects/reachablenumberprog.en.md b/subjects/reachablenumberprog.en.md
index b331300b..e6e30ce9 100644
--- a/subjects/reachablenumberprog.en.md
+++ b/subjects/reachablenumberprog.en.md
@@ -19,12 +19,16 @@ Here is a possible program to test your function :
 ```go
 package main
 
-import "fmt"
+import (
+	"fmt"
+
+	piscine ".."
+)
 
 func main() {
-	fmt.Println(ReachableNumber(1))
-	fmt.Println(ReachableNumber(10))
-	fmt.Println(ReachableNumber(1001))
+	fmt.Println(piscine.ReachableNumber(1))
+	fmt.Println(piscine.ReachableNumber(10))
+	fmt.Println(piscine.ReachableNumber(1001))
 }
 ```
 
diff --git a/tests/go/solutions/doppelgangerprog/main.go b/tests/go/solutions/doppelgangerprog/main.go
deleted file mode 100644
index b1ab7fff..00000000
--- a/tests/go/solutions/doppelgangerprog/main.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package main
-
-import "strings"
-
-func DoppelGanger(s, substr string) int {
-	return strings.LastIndex(s, substr)
-}
-
-func main() {
-}
diff --git a/tests/go/solutions/doppelgangerprog/test_doppelgangerprog.go b/tests/go/solutions/doppelgangerprog/test_doppelgangerprog.go
index ba959e2d..c75c18ec 100644
--- a/tests/go/solutions/doppelgangerprog/test_doppelgangerprog.go
+++ b/tests/go/solutions/doppelgangerprog/test_doppelgangerprog.go
@@ -4,6 +4,7 @@ import (
 	"github.com/01-edu/z01"
 
 	correct "./correct"
+	student "./student"
 )
 
 type node struct {
@@ -47,6 +48,6 @@ func main() {
 	}
 
 	for _, arg := range table {
-		z01.Challenge("DoppelGangerProg", DoppelGanger, correct.DoppelGanger, arg.big, arg.little)
+		z01.Challenge("DoppelGangerProg", student.DoppelGanger, correct.DoppelGanger, arg.big, arg.little)
 	}
 }
diff --git a/tests/go/solutions/findprevprime.go b/tests/go/solutions/findprevprime.go
index d04cdc03..40695e2e 100644
--- a/tests/go/solutions/findprevprime.go
+++ b/tests/go/solutions/findprevprime.go
@@ -1,10 +1,23 @@
 package correct
 
+func isPrime(nb int) bool {
+	if nb <= 0 || nb == 1 {
+		return false
+	}
+
+	for i := 2; i <= nb/2; i++ {
+		if nb%i == 0 {
+			return false
+		}
+	}
+	return true
+}
+
 func FindPrevPrime(nbr int) int {
 	if nbr < 2 {
 		return 0
 	}
-	if IsPrime(nbr) {
+	if isPrime(nbr) {
 		return nbr
 	}
 	return FindPrevPrime(nbr - 1)
diff --git a/tests/go/solutions/findprevprimeprog/main.go b/tests/go/solutions/findprevprimeprog/main.go
deleted file mode 100644
index af1d1184..00000000
--- a/tests/go/solutions/findprevprimeprog/main.go
+++ /dev/null
@@ -1,27 +0,0 @@
-package main
-
-func main() {
-}
-
-func FindPrevPrime(nbr int) int {
-	if nbr < 2 {
-		return 0
-	}
-	if IsPrime(nbr) {
-		return nbr
-	}
-	return FindPrevPrime(nbr - 1)
-}
-
-func IsPrime(nb int) bool {
-	if nb <= 0 || nb == 1 {
-		return false
-	}
-
-	for i := 2; i <= nb/2; i++ {
-		if nb%i == 0 {
-			return false
-		}
-	}
-	return true
-}
diff --git a/tests/go/solutions/findprevprimeprog/test_findprevprimeprog.go b/tests/go/solutions/findprevprimeprog/test_findprevprimeprog.go
index db2546f8..871cb98b 100644
--- a/tests/go/solutions/findprevprimeprog/test_findprevprimeprog.go
+++ b/tests/go/solutions/findprevprimeprog/test_findprevprimeprog.go
@@ -4,11 +4,12 @@ import (
 	"github.com/01-edu/z01"
 
 	correct "./correct"
+	student "./student"
 )
 
 func main() {
 	a := append(z01.MultRandIntBetween(0, 99999), 5, 4, 1)
 	for _, elem := range a {
-		z01.Challenge("FindPrevPrimeProg", FindPrevPrime, correct.FindPrevPrime, elem)
+		z01.Challenge("FindPrevPrimeProg", student.FindPrevPrime, correct.FindPrevPrime, elem)
 	}
 }
diff --git a/tests/go/solutions/halfcontestprog/main.go b/tests/go/solutions/halfcontestprog/main.go
deleted file mode 100644
index 3e423393..00000000
--- a/tests/go/solutions/halfcontestprog/main.go
+++ /dev/null
@@ -1,13 +0,0 @@
-package main
-
-func Halfcontest(h1, m1, h2, m2 int) int {
-	t1 := h1*60 + m1
-	t2 := h2*60 + m2
-	t2 = (t2 + t1) / 2
-	h2 = t2 / 60
-	m2 = t2 % 60
-	return h2*100 + m2
-}
-
-func main() {
-}
diff --git a/tests/go/solutions/halfcontestprog/test_halfcontestprog.go b/tests/go/solutions/halfcontestprog/test_halfcontestprog.go
index 9e881275..95869be5 100644
--- a/tests/go/solutions/halfcontestprog/test_halfcontestprog.go
+++ b/tests/go/solutions/halfcontestprog/test_halfcontestprog.go
@@ -4,6 +4,7 @@ import (
 	"github.com/01-edu/z01"
 
 	correct "./correct"
+	student "./student"
 )
 
 func main() {
@@ -28,6 +29,6 @@ func main() {
 	}
 
 	for _, arg := range table {
-		z01.Challenge("HalfContestProg", Halfcontest, correct.Halfcontest, arg.h1, arg.m1, arg.h2, arg.m2)
+		z01.Challenge("HalfContestProg", student.Halfcontest, correct.Halfcontest, arg.h1, arg.m1, arg.h2, arg.m2)
 	}
 }
diff --git a/tests/go/solutions/printrevcombprog/main.go b/tests/go/solutions/printrevcombprog/main.go
index f71a7187..110ad84a 100644
--- a/tests/go/solutions/printrevcombprog/main.go
+++ b/tests/go/solutions/printrevcombprog/main.go
@@ -6,10 +6,10 @@ func main() {
 	for a := 9; a >= 2; {
 		for b := a - 1; b >= 1; {
 			for c := b - 1; c >= 0; {
-				if a > b && b > c && (a+b+c) != 3 {
+				if a > b && b > c && a+b+c != 3 {
 					fmt.Printf("%d%d%d, ", a, b, c)
 				}
-				if (a + b + c) == 3 {
+				if a+b+c == 3 {
 					fmt.Printf("%d%d%d\n", a, b, c)
 				}
 				c--
diff --git a/tests/go/solutions/printrevcombprog/test_printrevcombprog.go b/tests/go/solutions/printrevcombprog/test_printrevcombprog.go
index d7659615..06e3bf1d 100644
--- a/tests/go/solutions/printrevcombprog/test_printrevcombprog.go
+++ b/tests/go/solutions/printrevcombprog/test_printrevcombprog.go
@@ -3,5 +3,5 @@ package main
 import "github.com/01-edu/z01"
 
 func main() {
-	z01.ChallengeMain("printrevcombprog")
+	z01.ChallengeMain("printrevcomb")
 }
diff --git a/tests/go/solutions/reachablenumberprog/main.go b/tests/go/solutions/reachablenumberprog/main.go
deleted file mode 100644
index a969e7e1..00000000
--- a/tests/go/solutions/reachablenumberprog/main.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package main
-
-func ReachableNumber(n int) int {
-	cnt := 0
-	for n > 0 {
-		cnt++
-		if n < 10 {
-			cnt += 8
-			break
-		} else {
-			n++
-		}
-		for n%10 == 0 {
-			n /= 10
-		}
-	}
-	return cnt
-}
-
-func main() {
-}
diff --git a/tests/go/solutions/reachablenumberprog/test_reachablenumberprog.go b/tests/go/solutions/reachablenumberprog/test_reachablenumberprog.go
index 790b3826..9b06ea09 100644
--- a/tests/go/solutions/reachablenumberprog/test_reachablenumberprog.go
+++ b/tests/go/solutions/reachablenumberprog/test_reachablenumberprog.go
@@ -4,6 +4,7 @@ import (
 	"github.com/01-edu/z01"
 
 	correct "./correct"
+	student "./student"
 )
 
 func main() {
@@ -17,6 +18,6 @@ func main() {
 		table = append(table, z01.MultRandIntBetween(1, 877))
 	}
 	for _, arg := range table {
-		z01.Challenge("ReachableNumber", ReachableNumber, correct.ReachableNumber, arg)
+		z01.Challenge("ReachableNumber", student.ReachableNumber, correct.ReachableNumber, arg)
 	}
 }
diff --git a/tests/go/solutions/sliceprog/main.go b/tests/go/solutions/sliceprog/main.go
deleted file mode 100644
index 66cdf796..00000000
--- a/tests/go/solutions/sliceprog/main.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package main
-
-func ifNegative(a []string, n int) int {
-	if n < 0 {
-		n = len(a) + n
-	}
-
-	if n < 0 {
-		n = 0
-	} else if n > len(a) {
-		n = len(a)
-	}
-
-	return n
-}
-
-func Slice(a []string, nbr ...int) []string {
-	if len(nbr) == 0 {
-		return a
-	}
-
-	first := nbr[0]
-	if len(nbr) == 1 {
-		if first < 0 {
-			first = len(a) + first
-			if first < 0 {
-				return a
-			}
-		}
-		return a[first:]
-	}
-	second := nbr[1]
-
-	first = ifNegative(a, first)
-	second = ifNegative(a, second)
-
-	if first > second {
-		return nil
-	}
-
-	return a[first:second]
-}
-
-func main() {
-}
diff --git a/tests/go/solutions/sliceprog/test_sliceprog.go b/tests/go/solutions/sliceprog/test_sliceprog.go
index e8477566..7064d708 100644
--- a/tests/go/solutions/sliceprog/test_sliceprog.go
+++ b/tests/go/solutions/sliceprog/test_sliceprog.go
@@ -4,6 +4,7 @@ import (
 	"github.com/01-edu/z01"
 
 	correct "./correct"
+	student "./student"
 )
 
 func main() {
@@ -40,6 +41,6 @@ func main() {
 	}
 
 	for _, a := range arr {
-		z01.Challenge("SliceProg", Slice, correct.Slice, a...)
+		z01.Challenge("SliceProg", student.Slice, correct.Slice, a...)
 	}
 }