@Override
    public boolean matches(InventoryCrafting inventoryCrafting, World world) {
        ItemStack saw = null;
        ItemStack plank = null;

        for (int i = 0; i < inventoryCrafting.getSizeInventory(); ++i) {
            ItemStack stackInSlot = inventoryCrafting.getStackInSlot(i);

            if (stackInSlot != null) {
                if (stackInSlot.getItem() == ModItems.itemSaw) {
                    if (saw != null) return false;
                    saw = stackInSlot;
                }
            }

            if (stackInSlot != null) {
                if (stackInSlot.getItem() == Item.getItemFromBlock(Blocks.wooden_slab)) {
                    if (plank != null) return false;
                    plank = stackInSlot;
                }
            }
        }
        return saw != null;
    }