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Tactics Trainer
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It is obvious that at least some of the TT problems and comments are monitored by the staff and/or authors. As a result flawed problems are corrected, all of which is good. However, when the problem is corrected the previous comments should be deleted since then center around flaws in the problem rather than its theme and are often confusing to those who look at the problem post correction.
BTW how does one author/suggest problems for TT?