01 January 2011

Sliding puzzles

Today, I have another chess puzzle which does not require special skills or knowledge. Still, it looks easier than it is!

Henry Chadwick
The Game of Chess, 1895
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In how many moves can the king reach the vacant square without moving to the center square? The pawns are immovable.

This is the shortest move sequence:
1. Ba1 2. Qb2 3. Kc3 4. Bc2 5. Rb1 6. Qc1 7. Bb2 8. Ra1 9. Bb1 10. Kc2 11. Bc3 12. Qb2 13. Kc1 14. Bc2 15. Rb1 16. Qa1 17. Rb2 18. Bb1 19. Rc2 20. Bb2 21. Rc3 22. Bc2 23. Kb1 24. Bc1 25. Qb2 26. Ka1.

This puzzle reminds me of Klotski a sliding tile game where you have to bring the red piece to its destination by moving other pieces. Bricks is another addictive game of that type.

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