No. 91: Six States Resist Qin

No. 91: Six States Resist Qin楚河 漢界砲帥炮車卒車相傌相炮卒卒傌馬象俥士馬象將士俥

"No. 91: Six States Resist Qin" 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 H4+3. 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, 2 Elephants, 2 Chariots, 2 Horses, 2 Cannons. Black has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Horses, a Cannon, 3 Soldiers.

Solution move by move

  1. 1. Red H4+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.
    1. Black R6-7 (threatens mate next move)
    1楚河 漢界砲帥炮車卒相傌相炮卒卒馬象俥士車傌馬象將士俥
    1. Black R6-7
  2. 2. Red R3=4 (captures the Advisor, check, sacrifices the Chariot, 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.
    • Wins material: takes the Advisor.
    • Creates an immediate mating threat that must be answered.
    • Takes away the General's escape squares.
    What to watch out for
    • Gives up the Chariot; the follow-up must be exact or the sacrifice is wasted.
    2. Black A5-6 (captures the Chariot, threatens mate next move)
    2楚河 漢界砲帥炮車卒相傌相炮卒卒馬象俥車傌馬象將士
    2. Black A5-6
  3. 3. Red C3=5 (check, 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.
    • Takes away the General's escape squares.
    What to watch out forNo real drawback in this position.
    3. Black A6+5 (threatens mate next move)
    3楚河 漢界砲帥炮車卒相傌相炮卒卒馬象俥士車傌馬象將
    3. Black A6+5
  4. 4. Red R6=5 (captures the Advisor, 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 Advisor.
    • Creates an immediate mating threat that must be answered.
    What to watch out forNo real drawback in this position.
    4. Black K5=4 (threatens mate next move)
    4楚河 漢界砲帥炮車卒相傌相炮卒卒馬象俥車傌馬象將
    4. Black K5=4
  5. 5. Red R5+1 (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.
    5. Black K4+1 (threatens mate next move)
    5楚河 漢界砲帥炮車卒相傌相炮卒卒馬象將車傌馬象俥
    5. Black K4+1
  6. 6. Red H8+7 (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.
    6. Black K4+1 (threatens mate next move)
    6楚河 漢界砲帥炮車卒相相炮卒卒傌馬將象車傌馬象俥
    6. Black K4+1
  7. 7. Red R5=6 (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 H2-4 (threatens mate next move)
    7楚河 漢界砲帥炮車卒相相炮卒卒傌將象馬車傌馬象俥
    7. Black H2-4
  8. 8. Red H7-5 (checkmate)
    Why it works
    • Ends the game: no legal reply remains.
    What to watch out forNo real drawback in this position.
    8楚河 漢界砲帥炮車卒相相炮卒傌卒將象馬車傌馬象俥
    8. Red H7-5

Variations and alternative defences

What if Black defends differently? The alternatives below were checked with the rules engine; lines marked with a mating move lose at once, the others are worth trying on the analysis board.

Final position

Final position楚河 漢界砲帥炮車卒相相炮卒傌卒將象馬車傌馬象俥

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

Questions about this puzzle

Who moves first in "No. 91: Six States Resist Qin"?

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 H4+3 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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