31. Red's Left Cannon Crosses the River

"31. Red's Left Cannon Crosses the River" is a opening record from Same-direction Cannons, 17 moves long. The move list below marks every check and capture, and the variations from the source book are listed after it.

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Pieces on the board

Red has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Horses, 2 Cannons, 5 Soldiers. Black has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Horses, 2 Cannons, 5 Soldiers.

Move list

1.	C2=5	C8=5
2.	H2+3	H8+7
3.	R1=2	R9+1
4.	H8+7	R9=4
5.	P3+1	H2+1
6.	C8+4	R1+1
7.	A6+5	R4+4
8.	E3+1	R1=6
9.	R2+6	R4=2
10.	C8=5+ ×Soldier	H7+5 ×Cannon
11.	C5+4+ ×Horse	A4+5
12.	R2=3 ×Soldier	C2+1
13.	E7+5	C2=5 ×Cannon
14.	R3=5 ×Cannon	R2+1
15.	P7+1	R2=3
16.	R9=7	P1+1
17.	E1-3

Final position

10 moves

17 moves

Variations and alternative defences

The source manual records 12 variations. Each branch starts from the move number shown.

Variation 1, from move 8: 8. C8=5+ A4+5 9. R9=8 C2=3 10. +C-2 R4+1 Try it on the board
Variation 2, from move 6: P3+1 7. C8=3 E7+9 8. C5=4 C2=3 9. E7+5 R1=2 10. A6+5 P5+1 11. R9=6 R4+8+ 12. A5-6 R2+3 13. C3=2 P5+1 14. P5+1 R2=5 15. A4+5 R5+2 16. P3+1 H7+5 17. P3+1 H5+4 18. R2+4 Try it on the board
Variation 3, from move 16: C5+5+ 17. E3+5 R5+2 18. C4+1 Try it on the board
Variation 4, from move 13: 13. H3+4 C5+4+ 14. H7+5 P5+1 15. H5-3 C3=5 16. A4+5 P1+1 17. R2+5 Try it on the board
Variation 5, from move 6: A4+5 7. R2+6 R4+5 8. R2=3 R4=3 9. R9+2 C2=3 10. H3+4 R3+1 11. R9=7 C3+5 12. R3+1 C5+4+ 13. A4+5 E3+5 14. H4+6 C5-2 15. C8=5 R1=4 16. H6+5 E7+5 17. +C=2 R4+3 18. C2+3+ E5-7 19. R3+2 R4=8 20. C2=4 K5=4 21. C4-7+ Try it on the board
Variation 6, from move 14: C5=7 15. R3=2 R1=4 16. H6+5 R4+2 17. H5+3+ K5=4 18. R2=6+ A5+4 19. H3-2 Try it on the board
Variation 7, from move 13: 13. C5+4+ E3+5 14. H4+6 C5-2 15. R3-2 C3-3 Try it on the board
Variation 8, from move 10: R1=2 11. H4+6 R3+1 12. R9=7 C3+5 13. R3+1 Try it on the board
Variation 9, from move 7: R4+4 8. R2=3 R4=2 9. R9=8 Try it on the board
Variation 10, from move 6: C2=3 7. A6+5 R4+4 8. C8=5+ H7+5 9. C5+4+ A4+5 10. E7+5 R1=2 11. R2+5 R2+7 12. R9=6 R4+4+ 13. H7-6 P1+1 14. H3+4 H1+2 15. P7+1 C3=1 16. P7+1 H2-3 17. C5-2 Try it on the board
Variation 11, from move 11: C3=4 12. P7+1 R4+1 13. H3+4 R4=3 14. R9=6 R2+2 15. R6+2 K5=4 16. R2=6 C5+4 17. -R+1 Try it on the board
Variation 12, from move 11: 11. P7+1 R4-2 12. C5=1 P7+1 13. C1+3 C5=7 14. P5+1 P7+1 15. H3+5 P7=6 16. P5+1 Try it on the board

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