Chariot Strikes the Marsh River

Chariot Strikes the Marsh River楚河 漢界帥砲車車相相俥炮卒卒兵象士士傌將

"Chariot Strikes the Marsh River" is a Xiangqi (Chinese Chess) puzzle from the collection Hundred Game Manual. Red moves first and wins in 11 moves; the key first move is R2+5. 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, a Chariot, a Horse, a Cannon, a Soldier. Black has a General, 2 Advisors, a Elephant, 2 Chariots, a Cannon, 2 Soldiers.

Solution move by move

  1. 1. Red R2+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.
    1. Black E5-7 (threatens mate next move)
    1楚河 漢界帥砲車車相相炮卒卒兵士士傌將象俥
    1. Black E5-7
  2. 2. Red R2=3 (captures the Elephant, 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.
    • Wins material: takes the Elephant.
    • 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.
    2. Black A5-6 (threatens mate next move)
    2楚河 漢界帥砲車車相相炮卒卒兵士傌將士俥
    2. Black A5-6
  3. 3. Red E3-5 (threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Not forcing: the defender has 31 replies, so compare each one before playing it.
    3. Black R7-9 (captures the Chariot)
    3楚河 漢界帥砲車相相炮卒卒兵士傌將士車
    3. Black R7-9
  4. 4. Red P6+1 (check, the only legal reply)
    Why it works
    • Forcing: the opponent has only one reply, so the line cannot be avoided.
    What to watch out forNo real drawback in this position.
    4. Black K4=5
    4楚河 漢界帥砲車相相炮卒卒士兵傌將士車
    4. Black K4=5
  5. 5. Red C1=9 (threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Not forcing: the defender has 33 replies, so compare each one before playing it.
    5. Black R3=4 (check)
    5楚河 漢界帥砲車相相炮卒卒士兵傌將士車
    5. Black R3=4
  6. 6. Red K6+1 (captures the Chariot, threatens mate next move)
    Why it works
    • Wins material: takes the Chariot.
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Not forcing: the defender has 24 replies, so compare each one before playing it.
    6. Black C5=1
    6楚河 漢界砲帥相相炮卒卒士兵傌將士車
    6. Black C5=1
  7. 7. Red H8-7 (threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Not forcing: the defender has 25 replies, so compare each one before playing it.
    7. Black -A+5
    7楚河 漢界砲帥相相炮卒卒傌士兵士將車
    7. Black -A+5
  8. 8. Red C9=8
    Why it works–
    What to watch out for
    • Not forcing: the defender has 27 replies, so compare each one before playing it.
    8. Black R7+8 (check)
    8楚河 漢界砲帥車相相炮卒卒傌士兵士將
    8. Black R7+8
  9. 9. Red K6+1
    Why it works–
    What to watch out for
    • Not forcing: the defender has 32 replies, so compare each one before playing it.
    9. Black R7=2
    9楚河 漢界砲車相帥相炮卒卒傌士兵士將
    9. Black R7=2
  10. 10. Red C8+5 (sacrifices the Cannon, threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Gives up the Cannon; the follow-up must be exact or the sacrifice is wasted.
    • Not forcing: the defender has 31 replies, so compare each one before playing it.
    10. Black R2-8 (captures the Cannon)
    10楚河 漢界砲相帥相卒卒傌士兵士車將
    10. Black R2-8
  11. 11. Red H7+8 (captures the Chariot)
    Why it works
    • Wins material: takes the Chariot.
    What to watch out for
    • Not forcing: the defender has 15 replies, so compare each one before playing it.
    11楚河 漢界砲相帥相卒卒士兵士傌將
    11. Red H7+8

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 漢界砲相帥相卒卒士兵士傌將

The record ends here.

Questions about this puzzle

Who moves first in "Chariot Strikes the Marsh River"?

Red moves first, as in every puzzle of Hundred Game Manual.

How many moves does the solution take?

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

What is the key move?

The first move R2+5 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.

Nearby puzzles

More from Hundred Game Manual →

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