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What's New

New features and meaningful improvements for your training with ChessRiddle.

September 26, 2026

  • Analysis in the browser now runs on Stockfish 19, the latest version of the engine.

September 20, 2026

  • In live shared sessions trainer and student now explore the analysis board together with the same engine evaluation, read the feedback each in their own language, and can review the whole submitted line with the wrong move shown next to its correction.

September 19, 2026

  • A line that is correct but stops too early no longer counts as wrong: you are told that your moves are correct so far, add the missing ones, and the finished line counts as a full solve.

September 16, 2026

  • The app is now also available in Indonesian.
  • The header now shows how many training invitations and shared plans are waiting for you and takes you straight to them.
  • Accepting, declining or cancelling a challenge now goes through even when the connection briefly drops, instead of ending with an error.

September 12, 2026

  • Puzzles you solve in a rated duel no longer count towards the daily puzzle limit of the free plan.
  • When a line was right but stopped too early, adding moves and sending it again keeps the result and rating change of your first attempt instead of showing the attempt as not counted.

September 11, 2026

  • If checking your answer takes too long, the line you entered stays on the board and you can submit it again or move straight to the next puzzle.

September 10, 2026

  • You can now read the terms and the privacy policy in Spanish as well; the German version remains authoritative.

September 9, 2026

  • Translated pages now have their own links, so you can open and share them directly.

September 1, 2026

  • After you successfully reset your password you now see a confirmation instead of a wrong invalid-link message.
  • Changing your password now asks for your current password, and you get an email once it has changed.

August 29, 2026

  • Confirming your email address no longer signs you in automatically — you sign in afterwards as usual.
  • You can have at most 30 collections.

August 27, 2026

  • If the server cannot check a streak answer, your run now continues with the next puzzle instead of ending as a wrong answer.
  • A line that is on the right track but stops too early is now shown as unfinished instead of wrong, and wherever the puzzle can still be continued it stays open for your remaining moves.
  • If your motif filter finds no puzzle, the rating range is now widened automatically, and if that still turns up nothing you are asked to pick another motif or clear the filter instead of being told to keep trying.

August 26, 2026

  • Puzzle solutions are checked more accurately: correct lines, including forced mates, are no longer rejected, and a wrong line now points to the move that actually failed.
  • The same position is no longer served to you twice, even across several open tabs or within a shared session.

August 22, 2026

  • You can now tick several puzzles at once to add them to a collection or remove them from it, instead of one at a time.
  • If your confirmation email never arrived, you can now request a new one directly from the sign-in screen.
  • Positional training now opens with its own introduction and has its own help and Guide section, instead of the instructions for mixed training.

August 12, 2026

  • In Settings you now only see voices that can actually read moves aloud; if the browser has no speech, the app tells you clearly.
  • When you create a challenge, you now see immediately if the rating range does not make sense, instead of only noticing an empty puzzle list.

August 5, 2026

  • You now receive an email if a payment fails or shortly before a free subscription period ends.
  • Strategy puzzles now reach a higher difficulty, so the hardest settings stay demanding even for strong players.
  • When the difficulty you picked is not in stock, the app now tells you instead of quietly serving easier puzzles.

July 28, 2026

  • Affiliate partners can now track link clicks, code redemptions, subscriptions, commissions and payouts in their own dashboard.

July 27, 2026

  • New challenge results now appear directly in your challenge list, and the notification clears once you have seen them.

July 25, 2026

  • New Conversion and Resistance puzzles: find the strongest move in a clearly better or clearly worse position — one decision per puzzle. They count toward your Strategy rating, the former Positional rating, which still covers positional puzzles too.

July 21, 2026

  • Search openings and variations in one consistent catalog in your language, then train them directly.
  • Tactical motifs now appear in your language across selectors, statistics, collections and shared sessions; the selector briefly explains each motif.

July 17, 2026

  • Every collection now opens with its own puzzle mix, and you can shuffle the catalog for a fresh selection.

July 13, 2026

  • Registration now completes reliably after email confirmation without showing an error page after a successful confirmation.

July 12, 2026

  • Players in India can now subscribe for ₹700 per month or ₹7,000 per year and pay with UPI.
  • Evaluation puzzles now resume correctly in mistake training.
  • Header navigation now stays accessible without crowding smaller screens.
  • Challenge friends to the same hidden puzzles: solve at your own pace while your opponent’s result for each puzzle stays hidden until you attempt it yourself; accuracy wins, and if accuracy is tied, speed points count only on puzzles both solved correctly, with controls for the mixed-position balance, piece count, and opening depth.
  • With Gold, build custom training plans from warm-up, main and cool-down puzzles, set difficulty and time budgets, and start, duplicate and share your plans.
  • Training history can now be filtered by plan, and plan cards show sessions, last use and average accuracy.
  • With Gold trainer tools, build reusable ordered puzzle collections, find and analyze puzzles with board previews and filters, and configure every puzzle individually.
  • Trainers can guide training partners through live sessions with a synchronized board, task list and variation tree, then analyze solved positions together with Stockfish; trainers control what the board reveals and students see their result when the session ends.
  • Evaluation feedback now shows the accepted range, the actual engine score and the engine verification details after submission.
  • Riddle Streak now marks the exact wrong move and shows the correct alternative when a streak ends.

July 8, 2026

  • Puzzle and analysis boards are more reliable on touch devices, with fewer conflicts between dragging, tapping and previews.
  • In evaluation mode, you can now adjust engine settings directly in the settings dialog.
  • Stats, history and training pages now have clearer labels and steadier loading states.
  • After checkout, your active subscription appears in the app more quickly.
  • Sign-in redirects, the mobile header and dark-mode contrast have been improved.

July 1, 2026

  • The iOS app is now available on the App Store.

June 27, 2026

  • The Android app is now available on Google Play. The iOS app is coming soon.
  • On iPhone and iPad, the controls below the board no longer overlap the board on smaller screens.

June 25, 2026

  • When you sign up, you can now optionally enter your approximate level so puzzles start at a fitting difficulty.

June 24, 2026

  • New accounts automatically get the free Gold trial right after confirming their email.
  • Fixed rare errors that could occur on very sharp, complex positions.

June 23, 2026

  • You can now search openings in the puzzle settings.
  • The result popup in coordinates training now has a close (X) button.

June 21, 2026

  • The free plan now includes 7 puzzles per day instead of 3.

June 15, 2026

  • New short training-plan option for sessions under 30 minutes.