I just finished pitting Caissa Chess Pro and Caissa Puzzles version 3.0.1 ($7.99; direct iTunes link) playing as White against Chess Genius ($9.99; direct iTunes link; pictured above) playing as black, with both apps set at their highest settings and most amount of time to play, and Chess Genius decisively won and had advantage for much of the game. Here’s the game:
I must make a couple of observations here. First, Caissa was very quick to move throughout, rarely taking any time to think about the position, which undoubtedly led to several of the mistaken moves it took. That being said, not all of Chess Genius’s moves seemed like the best to me, especially in the beginning of the middle game.
Also, during this game, I experienced a repeated bug with Chess Genius. Since I’m running both games on my 16GB iPhone 3GS, I would wait for the current app to move, then close that app, switch over to the other app and make the same move, then wait for the responding app to move, and begin the cycle again. At least five times during the game, when I stopped the game while Chess Genius was thinking—in order to take a call, respond to an email, or sleep—when I returned to the game, I found Chess Genius waiting for me to play having switched positions to White and mistaking me for the Black player. This was easily rectified by simply opening up the game preferences and switching positions, but it was a disconcerting and annoying bug nonetheless.
Please keep in mind that this is not a review, simply another round in a set of engine versus engine games that I’m running, building up to a set of reviews of all the major chess apps available for iPhone and iPod touch. Score card so far: HIARCS and Chess Genius both won as black against Glaurung and Caissa Pro respectively. Here’s the HIARCS versus Glaurung game. I also have all the major chess apps to review with the exception of Fritz, although Fritz’s developers say they will be getting me a copy once Fritz receives its next update. Currently, I’m testing: Caissa Pro, Chess Genius, Deep Green, Glaurung, HIARCS chess, Shredder, and tChess Pro. The next match I’ll run will be Shredder vs tChess Pro.
If you’re an iPhone developer and/or you have a chess app that I’ve missed in this list above that you think I should consider reviewing, please see this post.
The full PGN of the game is pasted below.
[Event “Sep 5, 2009 8:57 AM”]
1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Bb4 5. Be2 e4 6. Ng5 Bxc3 7. bxc3 d6 8. Qc2 Bf5 9. O-O h6 10. Nh3 Bxh3 11. gxh3 O-O 12. f3 Qe7 13. fxe4 Nxe4 14. Bf3 Rfe8 15. d3 Nc5 16. Bd5 Qg5+ 17. Kh1 Nd8 18. d4 c6 19. dxc5 cxd5 20. cxd6 dxc4 21. Qd1 Re6 22. d7 Qg6 23. Qd4 Rd6 24. Qxc4 Rxd7 25. a3 Ne6 26. Ra2 Rc7 27. Qd5 Rd8 28. Qa5 b6 29. Qb4 Qd3 30. Raf2 Ng5 31. h4 Ne4 32. Rf3 Rdd7 33. Qa4 Rc4 34. Qb5 Ng3+ 35. hxg3 Rxh4+ 36. gxh4 Qxb5 37. Kh2 Qc4 38. Kg3 Qxc3 39. Kh3 Rc7 40. e4 Qe5 41. Bf4 Qe6+ 42. Kg3 Rc2 43. R1f2 Qg6+ 44. Kh2 Qg4 45. Rxc2 Qxf3 46. Bg3 Qxa3 47. Rc8+ Kh7 48. Rc7 Qa2+ 49. Kh3 b5 50. Rb7 Qa6 51. Rc7 b4 52. Rc2 b3 53. Rf2 Qa1 54. Kg2 f6 55. Kf3 b2 56. Rxb2 Qxb2 57. Bf4 a5 58. Be3 a4 59. h5 a3 60. Kg4 a2 61. Kg3 a1=Q 62. Bf2 Qe5+ 63. Kg2 Qxe4+ 64. Kg3 Qae5+ 65. Kh3 Qxh5+ 66. Bh4 Qhxh4+ *