No. 163: Choosing Generals, Drilling Troops

No. 163: Choosing Generals, Drilling Troops楚河 漢界帥卒車炮傌象俥象砲車將士兵炮砲士

"No. 163: Choosing Generals, Drilling Troops" is a Xiangqi (Chinese Chess) puzzle from the collection Elegant Pastimes (Shiqing Yaqu, 1570). Red moves first and wins in 9 moves; the key first move is R7=6. Below you will find the full solution, what each move achieves, where it could go wrong, and the alternative defences.

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Pieces on the board

Red has a General, a Chariot, a Horse, 2 Cannons, a Soldier. Black has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Cannons, a Soldier.

Solution move by move

  1. 1. Red R7=6 (check, sacrifices the Chariot, threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Gives up the Chariot; the follow-up must be exact or the sacrifice is wasted.
    1. Black K4+1 (captures the Chariot, threatens mate next move)
    1楚河 漢界帥卒車炮傌象將象砲車士兵炮砲士
    1. Black K4+1
  2. 2. Red C5=6 (check, threatens mate next move, the only legal reply)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    • Creates an immediate mating threat that must be answered.
    What to watch out forNo real drawback in this position.
    2. Black K4-1 (threatens mate next move)
    2楚河 漢界帥卒車炮傌象象砲車將士兵炮砲士
    2. Black K4-1
  3. 3. Red P4=5 (captures the Advisor, check, the only legal reply)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    • Wins material: takes the Advisor.
    What to watch out forNo real drawback in this position.
    3. Black K4-1 (threatens mate next move)
    3楚河 漢界帥卒車炮傌象象砲車兵炮砲將士
    3. Black K4-1
  4. 4. Red H4+6 (check, threatens mate next move, the only legal reply, the General has no escape square)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    • Creates an immediate mating threat that must be answered.
    • Takes away the General's escape squares.
    What to watch out forNo real drawback in this position.
    4. Black R2=4 (threatens mate next move)
    4楚河 漢界帥卒車炮象傌象砲車兵炮砲將士
    4. Black R2=4
  5. 5. Red P5=6 (captures the Chariot, check, threatens mate next move, the only legal reply)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    • Wins material: takes the Chariot.
    • Creates an immediate mating threat that must be answered.
    What to watch out forNo real drawback in this position.
    5. Black K4=5 (threatens mate next move)
    5楚河 漢界帥卒車炮象傌象砲兵炮砲將士
    5. Black K4=5
  6. 6. Red C6=5 (check, the General has no escape square)
    Why it works
    • Takes away the General's escape squares.
    What to watch out for
    • Not forcing: the defender has 4 replies, so compare each one before playing it.
    6. Black E5-7 (threatens mate next move)
    6楚河 漢界帥卒車炮象傌砲兵炮砲將士象
    6. Black E5-7
  7. 7. Red C1=5 (check, threatens mate next move, the General has no escape square)
    Why it works
    • Creates an immediate mating threat that must be answered.
    • Takes away the General's escape squares.
    What to watch out forNo real drawback in this position.
    7. Black E7+5 (threatens mate next move)
    7楚河 漢界帥卒車炮象傌象砲兵炮砲將士
    7. Black E7+5
  8. 8. Red P6+1 (check, sacrifices the Soldier, threatens mate next move, the only legal reply)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Gives up the Soldier; the follow-up must be exact or the sacrifice is wasted.
    8. Black K5=4 (captures the Soldier, threatens mate next move)
    8楚河 漢界帥卒車炮象傌象砲炮砲將士
    8. Black K5=4
  9. 9. Red -C=6 (checkmate)
    Why it works
    • Ends the game: no legal reply remains.
    What to watch out forNo real drawback in this position.
    9楚河 漢界帥卒車炮象傌象砲炮砲將士
    9. Red -C=6

Variations and alternative defences

The source manual records 2 variations. Each branch starts from the move number shown.

Final position

Final position楚河 漢界帥卒車炮象傌象砲炮砲將士

Red wins after 9 moves. The General has no legal move.

Questions about this puzzle

Who moves first in "No. 163: Choosing Generals, Drilling Troops"?

Red moves first, as in every puzzle of Elegant Pastimes (Shiqing Yaqu, 1570).

How many moves does the solution take?

9 moves. The main line is shown above; alternative defences are covered in the variations section.

What is the key move?

The first move R7=6 starts the combination. Everything that follows depends on it.

Can I play this position myself?

Yes. Open it on ChessZing, where the board checks your moves and shows the solution if you get stuck.

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