Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var scanner = bufio.NewScanner(os.Stdin)
var (
	table, ans = [12][12]int{}, [12][12]int{}
)

func main() {
	scanner.Scan()
	n, _ := strconv.Atoi(scanner.Text())
	for i := 0; i < n; i++ {
		for j := 1; j < 11; j++ {
			scanner.Scan()
			input := strings.Split(scanner.Text(), " ")
			tmp := [10]int{}
			for k := range input {
				tmp[k], _ = strconv.Atoi(input[k])
			}
			for l := 1; l < 11; l++ {
				table[j][l] = tmp[l-1]
			}
		}
		check(table, 1, ans)
	}
}

func check(table [12][12]int, i int, ans [12][12]int) {
	if i == 11 {
		solve(table, 2, 1, ans)
		return
	}
	ans[1][i] = 0
	check(table, i+1, ans)
	ans[1][i] = 1
	attack(table, 1, i)
	check(table, i+1, ans)
	attack(table, 1, i)
}

func solve(table [12][12]int, i, j int, ans [12][12]int) {
	if i == 11 {
		flag := true
		for k := 1; k < 11; k++ {
			if table[10][k] == 1 {
				flag = false
				break
			}
		}
		if flag {
			printans(ans)
		}
		return
	}
	if table[i-1][j] == 1 {
		ans[i][j] = 1
		attack(table, i, j)
		if j == 10 {
			solve(table, i+1, 1, ans)
		} else {
			solve(table, i, j+1, ans)
		}
		attack(table, i, j)
		ans[i][j] = 0
	} else {
		ans[i][j] = 0
		if j == 10 {
			solve(table, i+1, 1, ans)
		} else {
			solve(table, i, j+1, ans)
		}
	}
}

func printans(ans [12][12]int) {
	for i := 1; i < 11; i++ {
		for j := 1; j < 11; j++ {
			fmt.Print(ans[i][j])
			if j < 10 {
				fmt.Print(" ")
			}
		}
		fmt.Println()
	}
}

func attack(table [12][12]int, i, j int) {
	table[i][j] = 1 - table[i][j]
	table[i-1][j] = 1 - table[i-1][j]
	table[i+1][j] = 1 - table[i+1][j]
	table[i][j-1] = 1 - table[i][j-1]
	table[i][j+1] = 1 - table[i][j+1]
}

C++: #include<iostream>
#include<vector>
#include<queue>
#include<cmath>
#include<algorithm>

#define MAX 12
#define NIL (-1)

using namespace std;

inline bool inRange(int t, int min, int max){
	return (min <= t && t < max);
}

class CMap{
public:
	int m[MAX][MAX];
	vector< pair<int, int > > vHist;

	CMap()
	{
		for(int i = 0; i < MAX; ++i)
			for(int j = 0; j < MAX; ++j)
				m[i][j] = 0;
	}

	void Reset()
	{
		for(int i = 0; i < MAX; ++i)
			for(int j = 0; j < MAX; ++j)
				m[i][j] = 0;
	}
	int TryPassParticle(int i, int j)
	{
		int cnt1 = 0;
		const int di[] = {0,-1,0,1,0};
		const int dj[] = {0,0,1,0,-1};

		for(int k = 0; k < sizeof(di)/sizeof(*di); ++k)
			if( inRange( i+di[k],1,MAX-1 ) && inRange( j+dj[k],1,MAX-1 ) )
				if( m[i+di[k]][j+dj[k]] == 1 )
					cnt1++;

		return cnt1;
	}
	bool PassParticle(int i, int j)
	{
		int cnt0 = 0;
		int cnt1 = 0;
		const int di[] = {0,-1,0,1,0};
		const int dj[] = {0,0,1,0,-1};

		if( !(inRange(i,1,MAX-1) && inRange(j,1,MAX-1)) )
			return false;

		if( find( vHist.begin(), vHist.end(), make_pair(i,j) ) != vHist.end() )
			return false;

		for(int k = 0; k < sizeof(di)/sizeof(*di); ++k)
			if( inRange( i+di[k],1,MAX-1 ) && inRange( j+dj[k],1,MAX-1 ) )
				if( m[i+di[k]][j+dj[k]] == 1 )
					cnt1++;
				else
					cnt0++;

		for(int k = 0; k < sizeof(di)/sizeof(*di); ++k)
			if( inRange( i+di[k],1,MAX-1 ) && inRange( j+dj[k],1,MAX-1 ) )
				m[i+di[k]][j+dj[k]] ^= 1;

		vHist.push_back( make_pair( i, j ) );
		return true;
	}
	bool NoLight(int range = MAX - 1) const
	{
		for(int i = 1; i < range; ++i)
			for(int j = 1; j < range; ++j)
				if( m[i][j] == 1 ) return false;
		return true;
	}

	void Print() const
	{
		for(int i = 1; i < MAX - 1; ++i){
			cout << m[i][1];
			for(int j = 2; j < MAX - 1; ++j)
				cout << ' ' << m[i][j];
			cout << '\n';
		}
	}

	void PrintPassHist(){
		Reset();

		for(unsigned int i = 0; i < vHist.size(); ++i)
			m[ vHist[i].first ][ vHist[i].second ] = 1;

		for(int i = 1; i < MAX - 1; ++i){
			cout << m[i][1];
			for(int j = 2; j < MAX - 1; ++j)
				cout << ' ' << m[i][j];
			cout << '\n';
		}
	}
};

void BFS(CMap &stm, CMap &ret){
	int n = 0;
	bool bFailed = true;
	queue< CMap > q;

	q.push( stm );
	while( !q.empty() ){
		bool bCont = true;
		CMap Tmp, M = q.front();
		
		q.pop();

		if( M.NoLight() )
		{
			ret = M;
			bFailed = false;
			break;
		}
		Tmp = M;

		for(unsigned int i = 1; i < MAX-1 && bCont; ++i){
			for(unsigned int j = 1; j < MAX-1 && bCont; ++j){
				if( M.m[i][j] == 1 ){
					int max1 = 0;
					int ci = NIL, cj = NIL;
					const int di[] = {0,1,0,-1};
					const int dj[] = {1,0,-1,0};
					const int sz = sizeof(di)/sizeof(*di);

					for(int k = 0; k < 2; ++k){
						if( M.m[i+di[k]][j+dj[k]] == 0 &&
							M.m[i+di[(k+1)%(sz-1)]][j+dj[(k+1)%(sz-1)]] == 0 ){
								int d1 = M.TryPassParticle(i+di[(k+2)%(sz-1)], j+dj[(k+2)%(sz-1)]);
								int d2 = M.TryPassParticle(i+di[(k+3)%(sz-1)], j+dj[(k+3)%(sz-1)]);
								if( d1 > max1 ){
									max1 = d1;
									ci = i+di[(k+2)%(sz-1)];
									cj = j+dj[(k+2)%(sz-1)];
								}
								if( d2 > max1 ){
									max1 = d2;
									ci = i+di[(k+3)%(sz-1)];
									cj = j+dj[(k+3)%(sz-1)];
								}
						}
					}
					if( M.PassParticle( ci, cj ) ){
						q.push( M );
						M = Tmp;
						bCont = false;
					}
				}
			}
		}
	}
}
int main(void){
	int n;

	cin >> n;
	for( int D = 0; D < n; ++D )
	{
		CMap M;
		CMap Answer;

		for(int i = 1; i < MAX - 1; ++i)
			for(int j = 1; j < MAX - 1 ; ++j)
				cin >> M.m[i][j];

		Answer.Reset();
		BFS( M, Answer );
		Answer.PrintPassHist();
	}
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;


void mark(int mp[10][10],int y,int x){
  int dx[]={0,0,1,-1},dy[]={1,-1,0,0};
  for(int i=0;i<4;i++) {
    int nx=x+dx[i],ny=y+dy[i];
    if(nx<0||ny<0||nx>=10||ny>=10)continue;
    mp[ny][nx]=!mp[ny][nx];
  }
  mp[y][x]=!mp[y][x];
}

bool check(int mp[10][10]){
  for(int i=0;i<10;i++)
    for(int j=0;j<10;j++)if(mp[i][j])return 0;
  return 1;
}

int main(){
  int q;
  cin>>q;
  while(q--){
    int mp[10][10];
    for(int i=0;i<10;i++)for(int j=0;j<10;j++)cin>>mp[i][j];

    int ans[10][10]={};
    for(int i=0;i<(1<<10)&&!check(mp);i++){
      for(int j=0;j<10;j++)if((ans[0][j]=(i>>j&1)))mark(mp,0,j);

      for(int j=1;j<10;j++)
	for(int k=0;k<10;k++)
	  if((ans[j][k]=mp[j-1][k]))mark(mp,j,k);
    }

    for(int i=0;i<10;i++){
      for(int j=0;j<10;j++){
	if(j) cout <<" ";
	cout << ans[i][j];
      }
      cout <<endl;
    }

  }

  return 0;
}