@Override
protected boolean isSolution(Integer[] solutions, int k, Board input) {
return input.getFreeCount() == 0;
}
@Override
protected void makeMove(Integer[] solutions, int k, Board input) {
input.fillSquare(input.getMove()[k], solutions[k]);
}
@Override
protected Integer[] constructCandidates(
Integer[] solutions, int k, Board input, int nCandidates) {
return input.getNextCandidates(k, input);
}
@Override
protected void unmakeMove(Integer[] a, int k, Board input) {
input.freeSquare(input.getMove()[k]);
}