Janggi: Korean Chess Mate

Janggi Puzzle — Korean chess (Janggi) mate-in-N training.

1,430 mate puzzles verified by an accurate Janggi rules engine. From mate-in-1 to mate-in-5, solve one a day, replay the best defence, and sharpen your endgame reading.

■ 1,430 mate puzzles
· Mate in 1 / 2 / 3, plus expert mate in 4 / 5
· N counts your attacking moves; each attack must give check
· Every puzzle has a single verified key move — no ambiguous duplicate solutions
· Full piece rules: chariot, cannon, horse, elephant, guard, soldier, general
(palace diagonals, bikjang, horse/elephant legs, cannon screen jumps)
· Replay the full proof line, including the defender's best resistance
· See why a wrong move drops the check or which defence escapes
· Train by cannon screens, horse legs, palace diagonals, and escape restriction

■ Basic and deep principle lessons
· Seven topics: cannon movement and checking screens, creating screens, horse legs, elephant paths, opening chariot lines, and multistage cannon and elephant play
· Seven steps at each level: principle, applications, candidate comparison, and mixed practice
· All lessons stay available, with a weekly recommendation on Today
· Separate lesson progress counts puzzles solved within that track
· After solving, read the reasoning, defensive replies and candidate refutations in Korean or English
· The 80 unique lesson puzzles explain board cues, piece cooperation, and what to look for in another position
· Hint use is recorded separately; opening the comparison is optional

■ Guided reading courses
· Eight courses from first mates through chariot, cannon, horse, elephant, soldier, and deep 3–5 move reading
· Finish each practice stage, then clear a 10-puzzle promotion test
· Your most-missed tactical motif is recommended from the home screen
· Revisit positions as best-defence, mate-goal, and next-move drills

■ AI matches with automatic review
· Choose Cho or Han and play a full Janggi game
· Beginner, intermediate, and advanced reading levels
· Review up to three improvements confirmed in the game analysis
· Other good moves can be accepted; after solving, compare predicted lines and open matching principle lessons
· Play and review without an internet connection

■ Daily practice that sticks
· A daily set of three: warm-up, matched level, and challenge
· Missed or hinted puzzles return after 1, 3, 7, and 21 days
· The review room keeps your wrong move, the refutation, and the next review date
· A reading rank from 18 kyu to 9 dan built from puzzles, courses, drills, reviews, challenges, and weekly tests
· A changing 20-puzzle promotion test each week
· Streaks, progress, and accuracy tracking
· 15 badges — streaks and difficulty milestones kept as wooden medals
· Stuck? A hint reveals the first move

■ Three challenges
· Ten-puzzle sprint
· Survival: keep going until the third mistake
· Mate ladder: climb from mate-in-1 through mate-in-5

■ Like a real janggi set
· Carved hanja octagonal pieces on a wooden board
· Pieces glide as they move, and the mating piece glows when you solve it
· Every puzzle clearly labels your side as CHO blue or HAN red
· Dark by default, light mode option, large-text friendly
· Only legal moves are highlighted

■ Offline
· Solve puzzles and play AI matches anywhere, no internet needed

For Janggi lovers who want to read deeper into the endgame.

Recent changes:
Stability improvements.