KONENKAMP, Justice.
[¶ 1.] As part of a plea agreement, Geoffrey E. Baldridge would plead no contest to a drug charge and cooperate with law enforcement officials in their investigation of criminal activity and reveal his sources, contacts and associates involved with illegal substances. The State promised, among other things, not to bring additional charges and to inform the court at sentencing of the extent and level of Baldridge’s cooperation. At sentencing the State said nothing, and Baldridge was sentenced to the maximum term of years. Baldridge did not appeal, but he later brought a petition for habeas relief. He asserted that his defense counsel was ineffective because counsel failed to (1) appeal his sentence, (2) file a motion to suppress, and (3) object when the State breached the plea agreement. The circuit court denied relief. Because the State breached an express term of the plea agreement and counsel was ineffective in bringing it to the attention of the court, we reverse and remand for resentencing.
Background
[¶ 2.] On December 20, 2003, Baldridge was stopped for speeding while driving on Interstate 29 through Codington County. He was on parole at the time. Riding in the car with him was his girlfriend. The South Dakota Highway Patrol trooper searched Baldridge’s vehicle incident to arrest, and found syringes under the passenger seat and a small amount of marijuana on Baldridge’s girlfriend. She claimed she obtained the marijuana from Baldridge, but later recanted and said the marijuana belonged to her. Baldridge was charged with speeding, no insurance, no driver’s license, untitled vehicle, and distribution of less than an ounce of marijuana.
[¶ 3.] Baldridge was transported to the Codington County Jail, where he consented to a urinalysis. The trooper field tested the UA. It was negative. Thereafter, the sample was sent to the State Health Lab in Pierre. The sample tested positive for methamphetamine. Baldridge was returned to prison for violating his parole because he drove without a license, purchased a vehicle without his parole officer’s [14]*14permission, and left his prescribed jurisdiction also without permission.
[¶ 4.] Baldridge was indicted in Cod-ington County on January 26, 2004, for possession of methamphetamine and for distribution of less than one ounce of marijuana. Attorney Tracy Niemann was appointed to represent him. Plea negotiations ensued. On the advice of counsel, Baldridge entered into a plea agreement. He would plead no contest to the possession count and agree to cooperate with law enforcement officers in their investigation of ongoing criminal activities, including those he had participated in. In turn, the State promised to grant him immunity for all other drug-related crimes disclosed during his cooperation, refrain from filing additional charges, and dismiss any other charges. The State also promised to inform the sentencing court of the extent and level of Baldridge’s cooperation with law enforcement investigators.
[¶ 5.] At Baldridge’s arraignment, the court discussed the terms of the plea agreement with him. The court asked Baldridge if he was coerced into accepting the agreement, whether he understood that he faced a possible maximum sentence of ten years and a $10,000 fine or both, and whether he understood what the plea agreement entailed and that no promises were made other than those stated in the agreement. Baldridge responded that he understood the plea agreement and that no promises were made other than those stated. He also said he was aware of the possible maximum sentence and was not coerced to enter into the agreement. Bal-dridge pleaded no contest to possession of methamphetamine.
[¶ 6.] To comply with the cooperation portion of the plea agreement by turning over names of people involved with illegal drugs, Baldridge told Attorney Niemann that “I don’t know many people anymore. I know people that do it, but I don’t know anything, so don’t even ask me to do a controlled buy.” According to Niemann, however, Baldridge said that “he had some people that he had known in the Aberdeen area that he could provide DCI information to, and he felt comfortable doing that, and he ... had written a list ... with the names of the people in the Aberdeen area.”
[¶ 7.] Later, Attorney Niemann “came back and told [Baldridge], well, [the Cod-ington County State’s Attorney] only wants people in Watertown.” In response, Baldridge said, “I am not from Watertown, so I don’t really know anybody.” Nothing in the plea agreement limited acceptable cooperation to information about drug activity only in Watertown. Baldridge called his girlfriend, who was apparently involved with the local drug culture, and she gave him some Watertown names.
[¶ 8.] Baldridge then debriefed with a DCI agent in the jail. Attorney Niemann introduced them, but did not remain for this law enforcement interview with his client. Baldridge gave the agent the information he obtained from his girlfriend. He also revealed the names of the Aberdeen people who Baldridge had direct knowledge of. Nothing in the record suggests that Baldridge was asked to participate in a controlled drug buy or a lie detector examination. More importantly, there is no evidence that the DCI found Baldridge’s information untruthful or his cooperation insufficient.1
[15]*15[¶ 9.] The court ordered a presentence investigation. On May 19, 2004, Baldridge was sentenced. Attorney Niemann spoke on Baldridge’s behalf, and Baldridge also spoke. The State made no comment on the level of Baldridge’s cooperation, and the presentence investigation report did not contain any discussion of Baldridge’s level of cooperation. Aside from mentioning to the circuit court at sentencing that his client “did comply with [the] plea agreement,” Niemann never mentioned the cooperation and debriefing Baldridge gave to the DCI. Further, Niemann never requested that the State’s Attorney comply with the plea agreement by informing “the sentencing judge of the extent and level of [Baldridge’s] cooperation with law enforcement officials in fulfilling the terms of [the] plea agreement,” nor did Niemann object when the State’s Attorney failed to do so.
[¶ 10.] In imposing the maximum penitentiary term, the court considered Bal-dridge’s criminal record. Given Bal-dridge’s “prolonged involvement in the drug culture,” his prior convictions, and his failure to learn from his past, the judge concluded that he was a public risk. Therefore, the court imposed “a term of 10 years in the state penitentiary ... together with $55 in court costs and an order to repay [his] court-appointed attorneys fees.” A judgment of conviction was entered on May 19, 2004.
[¶ 11.] Baldridge claims that after his sentencing he called Niemann at his office to tell him that he wanted to appeal. According to Baldridge, Niemann would not take his call. Baldridge then enlisted help from his parole revocation attorney, Jason Shanks, to tell Niemann that he wanted to appeal his sentence. Attorney Shanks wrote to Niemann on May 20, 2004, stating that Baldridge “indicated to me his desire to appeal the length of his sentence”; that he “attempted to contact your office and speak with you regarding an appeal, however, he was unable to get through to you”; and that “Accordingly, I indicated that I would contact you via correspondence to let you know of his intentions and desires pertaining to his sentence number.”
[¶ 12.] On May 24, 2004, Niemann wrote to Baldridge informing him that he had “now completed [the] duty of representation as your court appointed attorney.” Niemann told Baldridge that he had “only thirty (30) days, which would be approximately June 18, 2004,” to appeal his sentence. He also told Baldridge that he had “no grounds for a successful appeal.” Niemann’s advice was “not to file an appeal at this time.” And, if Baldridge disagreed with Niemann, Niemann wrote, “please advise me in writing as soon as possible so that the June 18, 2004 deadline is met.” Baldridge did not contact Niem-ann or make any other effort to appeal his sentence.
[¶ 13.] Baldridge petitioned for a writ of habeas corpus on September 7, 2004. He alleged that his due process rights were violated by the ineffective legal assistance he received from Niemann. Specifically, Baldridge claimed that Niemann (1) failed to move to suppress the UA, (2) failed to file a direct appeal, (3) did not adequately inform him of the effect of a no [16]*16contest plea, and (4) did not ensure that the plea agreement was followed. He also claimed that his sentence was cruel and unusual, in violation of the Eighth Amendment.
[¶ 14.] At the evidentiary hearing, Bal-dridge presented three witnesses: himself, Niemann, and Tom Smith, a forensic chemist at the State Health Lab in Pierre. Smith testified that he was not aware of what field tests were conducted on Bal-dridge’s UA by the trooper. However, he stated that the test used at the lab on Baldridge’s UA is highly reliable and “there are no false positives.” He explained that there are procedures in place for establishing the chain of custody of a sample and that they are generally followed, but could not testify to Baldridge’s sample in particular. According to Smith, Baldridge’s UA had been destroyed because no one asked for it to be retested after twelve months.
[¶ 15.] Attorney Niemann detailed his experience in handling criminal cases. He began law practice in 1995, and his first work involved court appointments. He also took many public defender appointments for several years. Then, in 2000, Niemann changed employment, but still took criminal appointments for many counties. Niemann indicated that when the firm accepted a public defender contract for Codington County, he handled the majority of those appointments.
[¶ 16.] Niemann testified that he explained to Baldridge that the State’s Attorney had a policy of bringing additional charges when a case was brought to trial. He also discussed with Baldridge his claim that the UA had been tampered with. According to Niemann, he researched Bal-dridge’s claims and discussed them with a senior partner. They both concluded that Baldridge’s claims would not support a motion to suppress. He informed Bal-dridge of this and told him that because the State’s Attorney would be inclined to bring more charges if the matter went to trial, Baldridge should consider a plea agreement.
[¶ 17.] Niemann testified that when he went over the plea agreement with Bal-dridge, he specifically informed Baldridge that he faced a possible maximum sentence of ten years and that whatever sentence he would receive was at the sole discretion of the judge. Baldridge signed a form indicating he understood this. After Bal-dridge was sentenced, Niemann said that he never received a call and that Baldridge never wrote or called after Niemann sent the May 24 letter indicating his representation was complete. He also testified that he was not aware of the letter from Attorney Shank, even though it turned out to be in Baldridge’s file at Niemann’s office.
[¶ 18.] In his testimony, Baldridge claimed that his UA had been tampered with because he had not used methamphetamine since 1999. He said that he told Niemann that the trooper altered his sample because it tested negative before it tested positive. Baldridge also said that he insisted on a jury trial because he was innocent, but Niemann told him that he would not get as harsh a sentence if he pleaded no contest. According to Bal-dridge, Niemann told him he would be sentenced to six months to a year. Bal-dridge said he was unaware that the sentence was up to the judge and he thought the State would recommend a lighter sentence.
[¶ 19.] The habeas court found no violation of Baldridge’s due process rights and no ineffective assistance of counsel. It explained that Niemann’s decision not to file the motion to suppress was made after investigation and in consideration of the merits of the claim. Moreover, although Baldridge’s parole violation attorney wrote [17]*17to Niemann about Baldridge’s desire for a direct appeal, Niemann wrote Baldridge and informed him that his representation was complete. Niemann explained to Bal-dridge his right to appeal and the time he had to do so, and Baldridge did nothing.
[¶ 20.] The court also found that the State did not fail to fulfill the terms of the plea agreement. According to the court, “The problem is, Baldridge claimed to know nothing of any help, so there was nothing for Niemann to inform the judge of. The claim is thus without merit.” Finally, the court found Baldridge’s sentence to be constitutional: the maximum sentence was imposed in large part because of Baldridge’s extensive criminal history. A ten-year sentence fit within the legislative scheme and was not grossly disproportionate. Accordingly, the court denied Bal-dridge’s petition for habeas relief. Bal-dridge appeals.
Standard of Review
[¶ 21.] We apply the following standards of review in this case:
Whether a defendant has received ineffective assistance of counsel is essentially a mixed question of law and fact. In the absence of a clearly erroneous determination by the circuit court, we must defer to its findings on such primary facts regarding what defense counsel did or did not do in preparation for trial and in his presentation of the defense at trial. This Court, however, may substitute its own judgment for that of the circuit court as to whether defense counsel’s actions or inactions constituted ineffective assistance of counsel.
Rodriguez v. Weber, 2000 SD 128, ¶ 28, 617 N.W.2d 132, 142 (citing Meinders v. Weber, 2000 SD 2, ¶ 42, 604 N.W.2d 248, 264 (quoting Sund v. Weber, 1998 SD 123, ¶ 14, 588 N.W.2d 223, 225) (other citations omitted)).
Because a petition [for a writ] of habeas corpus collaterally attacks a final judgment, our review is limited. Hays v. Weber, 2002 SD 59, ¶ 11, 645 N.W.2d 591, 595. Habeas review is not a substitute for a direct appeal. Lien v. Class, 1998 SD 7, ¶ 10, 574 N.W.2d 601, 606. As a general matter, habeas corpus is used to review only: (1) whether the court has jurisdiction of the crime and the person of the defendant; (2) whether the sentence was authorized by law; and (3) whether, in certain cases, a defendant was deprived of basic constitutional rights. New v. Weber, 1999 SD 125, ¶ 5, 600 N.W.2d 568, 571-72. Findings of fact are reviewed under the clearly erroneous standard. Id.
Moeller v. Weber, 2004 SD 110, ¶ 10, 689 N.W.2d 1, 6.
Analysis and Decision
[¶ 22.] Baldridge first asserts that defense counsel was ineffective because he failed to seek suppression of the results of the UA. After Baldridge told Niemann of his concerns regarding the authenticity of the UA results, Niemann researched the issue, examined the police reports, and weighed Baldridge’s claim of what happened. He learned that the testing done in the State lab would be regarded as more reliable. He also believed that if the case proceeded to a jury trial, the prosecutor would be more apt to bring additional charges. He spoke with his senior partner about Baldridge’s claims that the police tampered with his UA, and that it tested negative before positive. Niemann concluded that based on his research and his discussion with his partner that the issue would not support a successful motion to suppress. He advised Baldridge that the optimal choice would be to enter into a plea agreement.
[18]*18[¶ 23.] Baldridge bears the burden of establishing that under all the circumstances defense counsel’s decision not to bring a motion to suppress was an unsound strategy. See Weddell v. Weber, 2000 SD 3, ¶ 32, 604 N.W.2d 274, 282-83. We will not second-guess the strategic decisions of counsel. Id. (quoting Loop v. Class, 1996 SD 107, ¶ 18, 554 N.W.2d 189, 192 (quoting Aliberti v. Solem, 428 N.W.2d 638, 641 (S.D.1988))). See also Rodriguez, 2000 SD 128, ¶ 28, 617 N.W.2d at 142.
[¶ 24.] The habeas court found that “[t]here is not enough evidence in the record to establish either deficient performance or prejudice!.]” Because Bal-dridge submitted to the UA voluntarily and the lab expert testified that the test conducted by the State Health Lab would never show a false positive, the court found that the success of a motion to suppress would be unlikely. It concluded that the decision not to file a motion to suppress based on Baldridge’s chain of custody question “was a decision well within the defense attorney’s professional discretion.” With our deference to the court’s findings and the strategic decision of defense counsel, we find no error.
[¶ 25.] Baldridge next argues that defense counsel was ineffective when he failed to appeal his sentence at Baldridge’s request. Baldridge claims he called Niem-ann to inform him of his desire to appeal, but counsel did not return his call. He then had his parole violation attorney write a letter to Niemann. The letter was sent, but Niemann claims to have never seen it, even though his office had it on file. Nevertheless, Niemann did send a letter to Baldridge. In that letter, counsel informed Baldridge of his right to appeal and the time frame in which he had to do so. He also told Baldridge that it was his opinion that Baldridge should not appeal. But he warned Baldridge that if he desired to appeal, he should notify him as soon as possible. Baldridge did nothing thereafter.
[¶ 26.] The right to appeal is statutorily protected. SDCL 23A-32-2. “[I]t may not be indiscriminately denied.” State v. Hoxsie, 1997 SD 119, ¶ 7, 570 N.W.2d 379, 380 (per curiam). It is troubling that Niemann did not respond to the letter from Baldridge’s parole violation attorney, which clearly informed him that Baldridge wanted to appeal. Nonetheless, after that letter, Baldridge did receive correspondence from Niemann, specifically addressing his right to appeal. It explained in detail that Baldridge had an appeal right, when it expired, and that if he still desired to appeal he should “advise in writing as soon as possible[.]” Baldridge concedes he did nothing in response to this letter. We cannot say that the habeas court erred in concluding that Baldridge’s right to appeal was not indiscriminately denied or that he lost his right because of defense counsel’s ineffectiveness.
[¶ 27.] Baldridge next asserts that counsel was ineffective because he did not ensure that the plea agreement was followed. The plea agreement required that “the State of South Dakota will inform the sentencing judge of the extent and level of Baldridge’s cooperation with law enforcement officials in fulfilling the terms of this plea agreement.” (Emphasis added). At the sentencing hearing, the State made no statement about Baldridge’s cooperation. There was also nothing in the presentence investigation report that would inform the court on the level and extent of Baldridge’s cooperation. Citing only the circuit court’s findings as authority, the State contends that Baldridge could not identify how he cooperated, so his claim that a breach occurred is without merit. But the circuit court’s finding was clearly erroneous.
[19]*19[¶ 28.] At the habeas hearing, Bal-dridge plainly outlined his cooperation. It stands uncontradicted. He told how the State’s Attorney, contrary to the plea agreement, limited the cooperation he wanted to only information about people in Watertown. Yet the plea agreement explicitly provided that Baldridge would cooperate with investigating “criminal activity in ... South Dakota and the nation.” Baldridge still tried to oblige this turnaround by obtaining Watertown names from his girlfriend. He also composed a list of names of Aberdeen people he knew to be involved in illicit drugs. He met with a DCI agent and provided all this information to him. Nothing in the record supports a conclusion that the State or the DCI was dissatisfied with this information or that Baldridge’s debriefing was somehow not in full compliance with the plea agreement. Thus, the habeas court’s finding that “Baldridge claimed to know nothing of any help” is incorrect.
[¶ 29.] As we recently stated in Vanden Hoek v. Weber,
[A] breach of a plea agreement implicates due process concerns. “[O]nce an accused agrees to plead guilty in reliance upon a prosecutor’s promise to perform a future act, the accused’s due process rights demand fulfillment of the bargain.” State v. Waldner, 2005 SD 11, ¶ 18, 692 N.W.2d 187, 191-92 (citing State v. Williams, [249 Wis.2d 492] 637 N.W.2d 733, 744 (2002)) (internal quotations omitted).
2006 SD 102, ¶ 14, 724 N.W.2d 858, 862-63. It is immaterial that the sentencing judge may not have been influenced by the State fulfilling its end of the bargain. See id. ¶ 22. When there is a breach of an agreement from a plea that rests “in any significant degree on a promise or agreement from the prosecutor, so that it can be said to be part of the inducement or consideration,” the case must be remanded. Id. ¶ 13 (quoting Santobello v. New York. 404 U.S. 257, 262, 92 S.Ct. 495, 499, 30 L.Ed.2d 427 (1971)).
[¶ 30.] We use a “ ‘straight-forward interpretation’ ” of the State’s promise when examining whether a breach occurred. State v. Bracht, 1997 SD 136, ¶ 9, 573 N.W.2d 176, 179 (quoting United States v. McCray, 849 F.2d 304, 305 (8th Cir.1988); United States v. Carbone, 739 F.2d 45, 47 (2d Cir.1984)). Here, the State promised Baldridge that in exchange for giving up his right to a jury trial, it “will inform” the sentencing court of the level and extent of his cooperation. (Emphasis added). Bal-dridge was not promised that the State would recommend a lesser sentence. Rather, his agreement clearly identified that he faced the maximum possible sentence and that his sentence was at the discretion of the judge. Nonetheless, a comment from the State on his cooperation with law enforcement authorities certainly could have impacted the sentence he received. The State’s failure to fulfill its promise resulted in a breach of a material element of the agreement.
[¶ 31.] Baldridge, however, did not appeal his sentence. Therefore, to prevail in this case, he must establish that he “was deprived of basic constitutional rights.” See Moeller, 2004 SD 110, ¶10, 689 N.W.2d at 6 (citing New, 1999 SD 125, ¶ 5, 600 N.W.2d at 571-72). Baldridge claims he was denied due process because his counsel was ineffective when he failed to ensure that the plea agreement was followed. In Loop v. Solem, we stated that “[b]efore a petitioner succeeds on an ineffective assistance of counsel claim, he must normally fulfill the twofold test stated in Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984), reh’g denied, 467 U.S. 1267, 104 S.Ct. 3562, 82 L.Ed.2d 864.” 398 N.W.2d 140, 142 [20]*20(S.D.1986). That twofold test comprises a duty to show (1) ineffective assistance of counsel and (2) prejudice. Id.
[¶ 32.] We afford considerable deference to counsel’s strategic decisions. Moeller, 2004 SD 110, ¶ 28, 689 N.W.2d at 10. “Because of the difficulties inherent in making the evaluation, a court must indulge a strong presumption that counsel’s conduct falls within the wide range of reasonable professional assistance; that is, the petitioner must overcome the presumption that, under the circumstances, the challenged action ‘might be considered sound trial strategy.’ ” Strickland, 466 U.S. at 689, 104 S.Ct. at 2065, 80 L.Ed.2d 674 (citing Michel v. Louisiana, 350 U.S. 91, 101, 76 S.Ct. 158, 164, 100 L.Ed. 83 (1955)). “ ‘The benchmark for judging any claim of ineffectiveness must be whether counsel’s conduct so undermined the proper functioning of the adversarial process that the [process] cannot be relied upon as having produced a just result.’ ” Moeller, 2004 SD 110, ¶ 28, 689 N.W.2d at 10 (quoting Coon v. Weber, 2002 SD 48, ¶ 11, 644 N.W.2d 638, 642 (per curiam) (citation omitted)). Furthermore, we will not second guess the factual findings of the habeas court. Hofer v. Class, 1998 SD 58, ¶ 7, 578 N.W.2d 583, 585.
[¶ 33.] There is nothing in the record that suggests that defense counsel’s decision to do nothing when the State failed to inform the court of Baldridge’s cooperation was a reasoned strategy. The testimony elicited at the habeas hearing shows that counsel was not even aware that the State breached the terms of the plea agreement. Nevertheless, the habeas court found that no breach occurred and that counsel was not in effective because “Baldridge claimed to know nothing of any help.” These findings were clearly erroneous. Baldridge plainly set forth the cooperation he gave as required by his plea agreement. The express language of the agreement mandated that the State inform the court of Baldridge’s cooperation. That was never Baldridge’s duty. Defense counsel’s failure to object when the State breached a material element of the plea agreement amounted to a denial of the assistance of counsel.
[¶ 34.] The State argues that Baldridge has not established prejudice in the prosecutor’s failure to tell the sentencing judge of Baldridge’s cooperation and defense counsel’s failure to object.2 Here, however, there is an exception to the proof of prejudice requirement. “In certain Sixth Amendment contexts, prejudice is presumed.” Strickland, 466 U.S. at 692, 104 S.Ct. at 2067, 80 L.Ed.2d 674. One such instance is “[a]ctual or constructive denial of the assistance of counself.]” Id.; see also State v. Smith, 207 Wis.2d 258, 558 N.W.2d 379, 387 (1997). According to the Supreme Court, “[prejudice in these circumstances is so likely that case by case inquiry into prejudice is not worth the cost.” Strickland, 466 U.S. at 692, 104 S.Ct. at 2067, 80 L.Ed.2d 674; see also United States v. Vaval, 404 F.3d 144, 155 (2d Cir.2005). “In order to preserve the integrity of plea bargaining procedures and public confidence in the criminal justice system, a petitioner is generally entitled to the enforcement of a plea agreement without showing a tangible harm resulting from that breach.” Vaval, [21]*21404 F.3d at 155.3
[¶ 35.] Baldridge had a substantial right to the fulfillment of the terms of his plea agreement. See Santobello, 404 U.S. at 262, 92 S.Ct. at 499, 30 L.Ed.2d 427. This was true even if the breach was inadvertent. Vanden Hoek, 2006 SD 102, ¶ 20, 724 N.W.2d at 863 (citing Waldner, 2005 SD 11, ¶ 13, 692 N.W.2d at 192 (quoting State v. Howard, 246 Wis.2d 475, 630 N.W.2d 244, 250-51 (App.2001))). Because the State breached a material element of the plea agreement, Baldridge was not afforded a fair and reliable sentencing proceeding. In this case, the remedy for the breach is to remand the case for resen-tencing with a different judge. See Bracht, 1997 SD 136, ¶ 12, 573 N.W.2d at 180 (citing United States v. Brody, 808 F.2d 944, 948 (2d Cir.1986); Brunette v. United States, 864 F.2d 64, 65 (8th Cir.1988)). Because we remand for resentenc-ing, we need not address Baldridge’s claim that his sentence violates his Eighth Amendment right to be free from cruel and unusual punishment.
[¶ 36.] Reversed and remanded.
[¶ 37.] SABERS, ZINTER and MEIERHENRY, Justices, concur.
[¶ 38.] GILBERTSON, Chief Justice, concurs in part and dissents in part.