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A more gradual Silicio rating, with fractional points. We now distinguish your reference Elo from your training rating. Your accounts, ratings, progress and times are preserved. Your level changes only when you choose; repeating puzzles still neither adds nor deducts points.
Mate in 1 to 5 and beyond. Review mistakes and train with 12,017 puzzles.
Practice chess checkmates and learn from every mistake. Chess Checkmates by Ajedrez de Silicio brings together 12,017 checkmate puzzles to train calculation, recognize mating patterns and improve your tactical vision through chess exercises. Repetition deepens learning. FIVE CHECKMATE THEMES • Mate in 1. • Mate in 2. • Mate in 3. • Mate in 4. • Mate in 5 and mate in more than 5 moves. Practice everything from mate in one to multi-move mating sequences. The catalog offers up to 1,000 puzzles per theme and level across three levels: Intermediate, Advanced and High Level. Counts depend on the available puzzles that meet each group's difficulty requirements. High Level starts at Mate in 2. The Elo ranges guide your choice; you can change levels whenever you want. TURN MISTAKES INTO PRACTICE Return to puzzles you missed, retry them at your own pace and build tests from your own mistakes when at least five are available. You can also create chess tests with new puzzles and mixed themes. Correct solutions in a test update your progress in the corresponding themes. Chess calculation training focused on learning from your mistakes. PICK UP WHERE YOU LEFT OFF Open any puzzle from its numbered map, see correct and incorrect results through their colors, and resume your practice. The timer records active solving time and keeps your fastest correct solution time. TRAINING RATING AND LOCAL PROFILES Enter an estimated starting Elo and follow your training rating. Before answering, see how many points you can gain or lose. Each puzzle affects your rating only once per profile. Repeating it helps you learn without changing your rating. Silicio rating is not equivalent to FIDE Elo. Up to five people can keep separate local profiles on the same device, with simple editing and deletion. A BOARD BUILT FOR STUDY Drag pieces or tap squares. Use coordinates outside the board, sounds, board flipping and notation with distinct White and Black figurines. After finishing, tap any move and review the solution step by step. Included content works offline. English and Spanish follow your device language. No ads, subscriptions or in-app purchases. Profiles and progress stay on this device, without synchronization between phones.