diff --git a/components/hooks/ProblemProvider/Problem.js b/components/hooks/ProblemProvider/Problem.js
index 2a54074..70f2736 100644
--- a/components/hooks/ProblemProvider/Problem.js
+++ b/components/hooks/ProblemProvider/Problem.js
@@ -8,7 +8,6 @@ export function useProblem(url) {
   const state = {};
   [state.problemInfoMap] = useProblemInfoMap(url);
   [state.problemNameMap] = useProblemNameMap(state.problemInfoMap);
-  [state.problemType, state.setProblemType] = useState("NPC");
   [state.problemName, state.setProblemName] = useProblemName(state.problemNameMap);
   [state.problemInstance, state.setProblemInstance] = useState("{{1,2,3},{1,2},GENERIC}"); // Careful about changing this value, the application boot up sequence is dependent on having a default value.
   return state;
diff --git a/components/hooks/ProblemProvider/Reducer.js b/components/hooks/ProblemProvider/Reducer.js
index 4e07278..ae30f7e 100644
--- a/components/hooks/ProblemProvider/Reducer.js
+++ b/components/hooks/ProblemProvider/Reducer.js
@@ -8,12 +8,12 @@ const DEFAULT_CLIQUE_CHOSEN_REDUCTION_TYPE = "SipserReduceToCliqueStandard";
 const DEFAULT_CLIQUE_CHOSEN_REDUCE_TO = "VERTEXCOVER";
 const DEFAULT_VERTEXCOVER_CHOSEN_REDUCTION_TYPE = "sipserReduceToVC";
 
-export function useReducer(url, problemName, problemType, problemInstance) {
+export function useReducer(url, problemName, problemInstance) {
   const state = {};
-  [state.reduceToOptions] = useReduceToOptions(url, problemName, problemType);
+  [state.reduceToOptions] = useReduceToOptions(url, problemName);
   [state.chosenReduceTo, state.setChosenReduceTo] = useChosenReduceTo(problemName, state.reduceToOptions);
   [state.reductionNameMap] = useReductionNameMap(url, problemName, state.chosenReduceTo);
-  [state.reductionTypeOptions] = useReductionTypeOptions(url, problemName, problemType, state.chosenReduceTo);
+  [state.reductionTypeOptions] = useReductionTypeOptions(url, problemName, state.chosenReduceTo);
   [state.chosenReductionType, state.setChosenReductionType] = useChosenReductionType(
     problemName,
     state.chosenReduceTo,
@@ -84,42 +84,42 @@ function useReductionVisualization(url, chosenReduceTo) {
   return [reductionVisualization, setReductionVisualization];
 }
 
-function useReduceToOptions(url, problemName, problemType) {
+function useReduceToOptions(url, problemName) {
   const [reduceToOptions, setReduceToOptions] = useState([]);
 
   useEffect(() => {
     (async () => {
       setReduceToOptions(
-        (problemName && problemType ? (await requestReductionOptions(url, problemName, problemType)) ?? [] : []).sort()
+        (problemName ? (await requestReductionOptions(url, problemName)) ?? [] : []).sort()
       );
     })();
-  }, [problemName, problemType, url]);
+  }, [problemName, url]);
 
   return [reduceToOptions, setReduceToOptions];
 }
 
-function useReductionTypeOptions(url, problemName, problemType, chosenReduceTo) {
+function useReductionTypeOptions(url, problemName, chosenReduceTo) {
   const [reductionTypeOptions, setReductionTypeOptions] = useState([]);
 
+  async function requestPreparedReductions(url, problemName, chosenReduceTo) {
+    const reductions = (await requestReductions(url, problemName, chosenReduceTo)) ?? [];
+    let path = "";
+    for (const reduction of reductions) {
+      path += reduction[0] + "-";
+    }
+    return path !== "" ? [path.slice(0, -1)] : [];
+  }
+
   useEffect(() => {
     (async () => {
       setReductionTypeOptions(
-        (problemName && problemType && chosenReduceTo
-          ? (await requestPreparedReductions(url, problemName, chosenReduceTo, problemType)) ?? []
+        (problemName && chosenReduceTo
+          ? (await requestPreparedReductions(url, problemName, chosenReduceTo)) ?? []
           : []
         ).sort()
       );
     })();
-  }, [problemType, chosenReduceTo, url, problemName]);
-
-  async function requestPreparedReductions(url, problemName, chosenReduceTo, problemType) {
-    const reductions = (await requestReductions(url, problemName, chosenReduceTo, problemType)) ?? [];
-    let path = "";
-    for (const reduction of reductions) {
-      path += reduction[0] + "-";
-    }
-    return path !== "" ? [path.slice(0, -1)] : [];
-  }
+  }, [chosenReduceTo, url, problemName]);
 
   return [reductionTypeOptions, setReductionTypeOptions];
 }
diff --git a/components/hooks/ProblemProvider/Solver.js b/components/hooks/ProblemProvider/Solver.js
index 8ec4fff..e53d78f 100644
--- a/components/hooks/ProblemProvider/Solver.js
+++ b/components/hooks/ProblemProvider/Solver.js
@@ -2,11 +2,11 @@ import { useGenericInfo } from "../ProblemProvider";
 import { requestInfo, requestSolvers } from "../../redux";
 import React, { useEffect, useState, useRef } from "react";
 
-export function useSolver(url, problemName, problemType, problemNameMap, problemInfoMap, problemInstance) {
+export function useSolver(url, problemName, problemNameMap, problemInfoMap, problemInstance) {
   const state = {};
   /// Maps each problem name to its default solver name.
   [state.defaultSolverMap] = useDefaultSolverMap(url, problemInfoMap);
-  [state.solverOptions] = useSolverOptions(url, problemName, problemType);
+  [state.solverOptions] = useSolverOptions(url, problemName);
   [state.chosenSolver, state.setChosenSolver] = useChosenSolver(problemName, state.defaultSolverMap);
   [state.solverNameMap] = useSolverNameMap(url, problemNameMap);
   [state.solvedInstance, state.setSolvedInstance] = useSolvedInstance(problemInstance, state.chosenSolver);
@@ -86,14 +86,14 @@ function useDefaultSolverMap(url, problemInfoMap) {
   return [defaultSolverMap, setDefaultSolverMap];
 }
 
-function useSolverOptions(url, problemName, problemType) {
+function useSolverOptions(url, problemName) {
   const [solverOptions, setSolverOptions] = useState([]);
 
   useEffect(() => {
     (async () => {
-      setSolverOptions(problemName && problemType ? (await requestSolvers(url, problemName, problemType)) ?? [] : []);
+      setSolverOptions(problemName ? (await requestSolvers(url, problemName)) ?? [] : []);
     })();
-  }, [problemName, problemType, url]);
+  }, [problemName, url]);
 
   return [solverOptions, setSolverOptions];
 }
diff --git a/components/hooks/ProblemProvider/Verifier.js b/components/hooks/ProblemProvider/Verifier.js
index 85d6f66..cd2e65a 100644
--- a/components/hooks/ProblemProvider/Verifier.js
+++ b/components/hooks/ProblemProvider/Verifier.js
@@ -2,10 +2,10 @@ import { useGenericInfo } from "../ProblemProvider";
 import { requestInfo, requestVerifiers } from "../../redux";
 import React, { useEffect, useState, useRef } from "react";
 
-export function useVerifier(url, problemName, problemType, problemNameMap, problemInfoMap) {
+export function useVerifier(url, problemName, problemNameMap, problemInfoMap) {
   const state = {};
   [state.defaultVerifierMap] = useDefaultVerifierMap(url, problemInfoMap);
-  [state.verifierOptions] = useVerifierOptions(url, problemName, problemType);
+  [state.verifierOptions] = useVerifierOptions(url, problemName);
   [state.chosenVerifier, state.setChosenVerifier] = useChosenVerifier(problemName, state.defaultVerifierMap);
   [state.verifierNameMap] = useVerifierNameMap(url, problemNameMap);
   return state;
@@ -45,16 +45,16 @@ function useDefaultVerifierMap(url, problemInfoMap) {
   return [defaultVerifierMap, setDefaultVerifierMap];
 }
 
-function useVerifierOptions(url, problemName, problemType) {
+function useVerifierOptions(url, problemName) {
   const [verifierOptions, setVerifierOptions] = useState([]);
 
   useEffect(() => {
     (async () => {
       setVerifierOptions(
-        problemName && problemType ? (await requestVerifiers(url, problemName, problemType)) ?? [] : []
+        problemName ? (await requestVerifiers(url, problemName)) ?? [] : []
       );
     })();
-  }, [problemName, problemType, url]);
+  }, [problemName, url]);
 
   return [verifierOptions, setVerifierOptions];
 }
diff --git a/components/hooks/ProblemProvider/Visualization.js b/components/hooks/ProblemProvider/Visualization.js
index 5530654..ffd7ba0 100644
--- a/components/hooks/ProblemProvider/Visualization.js
+++ b/components/hooks/ProblemProvider/Visualization.js
@@ -2,10 +2,10 @@ import { useGenericInfo } from "../ProblemProvider";
 import { requestInfo, requestVisualizations } from "../../redux";
 import React, { useEffect, useState, useRef } from "react";
 
-export function useVisualization(url, problemName, problemType, problemNameMap, problemInfoMap) {
+export function useVisualization(url, problemName, problemNameMap, problemInfoMap) {
   const state = {};
   [state.defaultVisualizationMap] = useDefaultVisualizationMap(url, problemInfoMap);
-  [state.VisualizationOptions] = useVisualizationOptions(url, problemName, problemType);
+  [state.VisualizationOptions] = useVisualizationOptions(url, problemName);
   [state.chosenVisualization, state.setChosenVisualization] = useChosenVisualization(problemName, state.defaultVisualizationMap);
   [state.VisualizationNameMap] = useVisualizationNameMap(url, problemNameMap);
   return state;
@@ -45,16 +45,16 @@ function useDefaultVisualizationMap(url, problemInfoMap) {
   return [defaultVisualizationMap, setDefaultVisualizationMap];
 }
 
-function useVisualizationOptions(url, problemName, problemType) {
+function useVisualizationOptions(url, problemName) {
   const [VisualizationOptions, setVisualizationOptions] = useState([]);
 
   useEffect(() => {
     (async () => {
       setVisualizationOptions(
-        problemName && problemType ? (await requestVisualizations(url, problemName, problemType)) ?? [] : []
+        problemName ? (await requestVisualizations(url, problemName)) ?? [] : []
       );
     })();
-  }, [problemName, problemType, url]);
+  }, [problemName, url]);
 
   return [VisualizationOptions, setVisualizationOptions];
 }
diff --git a/components/hooks/ProblemProvider/index.js b/components/hooks/ProblemProvider/index.js
index db77db6..9cceac4 100644
--- a/components/hooks/ProblemProvider/index.js
+++ b/components/hooks/ProblemProvider/index.js
@@ -15,13 +15,13 @@ import { useVisualization} from "./Visualization";
 
 export function useProblemProvider(url) {
   const problem = useProblem(url);
-  const { problemName, problemType, problemNameMap, problemInfoMap, problemInstance } = problem;
+  const { problemName, problemNameMap, problemInfoMap, problemInstance } = problem;
   return {
     problem: problem,
-    reducer: useReducer(url, problemName, problemType, problemInstance),
-    solver: useSolver(url, problemName, problemType, problemNameMap, problemInfoMap, problemInstance),
-    verifier: useVerifier(url, problemName, problemType, problemNameMap, problemInfoMap),
-    visualization: useVisualization(url, problemName, problemType, problemNameMap, problemInfoMap),
+    reducer: useReducer(url, problemName, problemInstance),
+    solver: useSolver(url, problemName, problemNameMap, problemInfoMap, problemInstance),
+    verifier: useVerifier(url, problemName, problemNameMap, problemInfoMap),
+    visualization: useVisualization(url, problemName, problemNameMap, problemInfoMap),
   };
 }
 
diff --git a/components/redux/index.js b/components/redux/index.js
index 2b6aaad..eea49d7 100644
--- a/components/redux/index.js
+++ b/components/redux/index.js
@@ -271,9 +271,9 @@ export async function requestReductionInfo(url, apiCall) {
  * @returns an array of problems that have implemented reductions from `problem`.
  * @returns `undefined` on failure and logs the error.
  */
-export async function requestReductionOptions(url, problem, problemType = "NPC") {
+export async function requestReductionOptions(url, problem) {
   return await fetchJson(
-    `${url}Navigation/NPC_NavGraph/availableReductions/?chosenProblem=${problem}&problemType=${problemType}`,
+    `${url}Navigation/NPC_NavGraph/availableReductions/?chosenProblem=${problem}`,
     () => `${problem} REDUCTION OPTIONS REQUEST FAILED`
   );
 }
@@ -315,9 +315,9 @@ export async function requestProblemGenericInstance(url, problem, instance) {
  * @returns an array of arrays of reductions implemented for reducing a problem to another problem.
  * @returns `undefined` on failure and logs the error.
  */
-export async function requestReductions(url, problemFrom, problemTo, problemType = "NPC") {
+export async function requestReductions(url, problemFrom, problemTo) {
   return await fetchJson(
-    `${url}Navigation/NPC_NavGraph/reductionPath/?reducingFrom=${problemFrom}&reducingTo=${problemTo}&problemType=${problemType}`,
+    `${url}Navigation/NPC_NavGraph/reductionPath/?reducingFrom=${problemFrom}&reducingTo=${problemTo}`,
     () => `${problemFrom} TO ${problemTo} REDUCTIONS REQUEST FAILED`
   );
 }
@@ -338,9 +338,9 @@ export async function requestSolvedInstance(url, solver, instance) {
  * @returns an array of solvers implemented for the `problem`.
  * @returns `undefined` on failure and logs the error.
  */
-export async function requestSolvers(url, problem, problemType = "NPC") {
+export async function requestSolvers(url, problem) {
   return await fetchJson(
-    `${url}Navigation/Problem_SolversRefactor/?chosenProblem=${problem}&problemType=${problemType}`,
+    `${url}Navigation/Problem_SolversRefactor/?chosenProblem=${problem}`,
     () => `${problem} SOLVERS REQUEST FAILED`
   );
 }
@@ -349,9 +349,9 @@ export async function requestSolvers(url, problem, problemType = "NPC") {
  * @returns an array of verifiers implemented for the `problem`.
  * @returns `undefined` on failure and logs the error.
  */
-export async function requestVerifiers(url, problem, problemType = "NPC") {
+export async function requestVerifiers(url, problem) {
   return await fetchJson(
-    `${url}Navigation/Problem_VerifiersRefactor/?chosenProblem=${problem}&problemType=${problemType}`,
+    `${url}Navigation/Problem_VerifiersRefactor/?chosenProblem=${problem}`,
     () => `${problem} VERIFIERS REQUEST FAILED`
   );
 }
@@ -389,9 +389,9 @@ export async function requestVisualization(url, visualization, instance) {
  * @returns an array of visualizations implemented for the `problem`.
  * @returns `undefined` on failure and logs the error.
  */
-export async function requestVisualizations(url, problem, problemType = "NPC") {
+export async function requestVisualizations(url, problem) {
   return await fetchJson(
-    `${url}Navigation/Problem_VisualizationsRefactor/?chosenProblem=${problem}&problemType=${problemType}`,
+    `${url}Navigation/Problem_VisualizationsRefactor/?chosenProblem=${problem}`,
     () => `${problem} VISUALIZATIONS REQUEST FAILED`
   );
 }