No. 131: Guest Behind the Curtain

No. 131: Guest Behind the Curtain楚河 漢界俥帥卒車車相傌馬傌炮士俥馬象士將炮

"No. 131: Guest Behind the Curtain" is a Xiangqi (Chinese Chess) puzzle from the collection Elegant Pastimes (Shiqing Yaqu, 1570). Red moves first and wins in 8 moves; the key first move is R4+1. 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 Elephant, 2 Chariots, 2 Horses, 2 Cannons. Black has a General, 2 Advisors, a Elephant, 2 Chariots, 2 Horses, a Soldier.

Solution move by move

  1. 1. Red R4+1 (check, sacrifices the Chariot, 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 Chariot; the follow-up must be exact or the sacrifice is wasted.
    1. Black K5=6 (captures the Chariot, threatens mate next move)
    1楚河 漢界俥帥卒車車相傌馬傌炮士馬象士將炮
    1. Black K5=6
  2. 2. Red H2+3 (check, threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • The Horse stands where it can be captured.
    2. Black K6=5 (threatens mate next move)
    2楚河 漢界俥帥卒車車相馬傌傌炮士馬象士將炮
    2. Black K6=5
  3. 3. Red H3+2 (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.
    3. Black H9-7 (threatens mate next move)
    3楚河 漢界俥帥卒車車相馬傌炮士象士將馬傌炮
    3. Black H9-7
  4. 4. Red H1+3 (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.
    4. Black K5=6 (threatens mate next move)
    4楚河 漢界俥帥卒車車相馬炮士傌象士將馬傌炮
    4. Black K5=6
  5. 5. Red H2-3 (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.
    5. Black H7+9 (threatens mate next move)
    5楚河 漢界俥帥卒車車相馬傌炮士傌馬象士將炮
    5. Black H7+9
  6. 6. Red +H-5 (check, threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out forNo real drawback in this position.
    6. Black K6=5 (threatens mate next move)
    6楚河 漢界俥帥卒車車相馬傌傌炮士馬象士將炮
    6. Black K6=5
  7. 7. Red H3+4 (check, sacrifices the Horse, threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Gives up the Horse; the follow-up must be exact or the sacrifice is wasted.
    7. Black K5=6 (captures the Horse, threatens mate next move)
    7楚河 漢界俥帥卒車車相馬傌炮士馬象士將炮
    7. Black K5=6
  8. 8. Red R6+9 (captures the Advisor, checkmate)
    Why it works
    • Ends the game: no legal reply remains.
    • Wins material: takes the Advisor.
    What to watch out forNo real drawback in this position.
    8楚河 漢界帥卒車車相馬傌炮士馬象俥將炮
    8. Red R6+9

Variations and alternative defences

The source manual records 3 variations. Each branch starts from the move number shown.

Final position

Final position楚河 漢界帥卒車車相馬傌炮士馬象俥將炮

Red wins after 8 moves. The General has no legal move.

Questions about this puzzle

Who moves first in "No. 131: Guest Behind the Curtain"?

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

How many moves does the solution take?

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

What is the key move?

The first move R4+1 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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