Shredder (software)

Shredder is a commercial chess engine and graphical user interface (GUI) developed in Germany by Stefan Meyer-Kahlen in 1993. Shredder won the World Microcomputer Chess Championship in 1996 and 2000, the World Computer Chess Championship in 1999 and 2003, the World Computer Speed Chess Championship in 2002, 2003, 2004, 2005, and 2007, and the World Chess Software Championship in 2010.
One of the features of the Shredder engine is that it can be set to play at different Elo rating levels from beginner to master level. The Shredder GUI will estimate your Elo rating based on your games, and adjust its strength in future games to give you a chance of winning.
The Shredder web site also sells "Chess Tutor," a teaching program based on the Steps Method course of Dutch psychologist Rob Brunia and IM Cor van Wijgerden.
The Shredder engine version 10.0 was released in June 2006. Version 11.0 was released in October 2007. Version 12 was released in January 2010. The "Deep" version takes advantage of multiple CPUs or multiple core CPUs. Version 13 was released in 30 October 2016. Version 13 is about 300 Elo better than Version 12.
Awards.
Shredder has won a number of computer chess tournaments since its inception:
Platforms.
Shredder is one of the few commercial chess programs which is available not only for Windows and Mac OS, but also for Linux. Shredder is also available on the iPhone, the iPad and Android.
Sample game 01.
The following game was played between Shredder (playing as Black) and List at the 2003 World Computer Chess Championship. Shredder sacrifices a piece in exchange for a strong initiative in a position too complex for the computer to calculate to the end. 
Sample game 02.
The following is a complete "Portable Game Notation" of a game between Texel 1.07 (White) and Deep Shredder 13 (Black) from CCRL. The Opening is the complicated Bogo-Indian The "Bogo-Indian Defence" is classified as E11 by the "Encyclopaedia of Chess Openings" (ECO). Deep Shredder 13 convincingly wins a Rook and Pawn endgame after a long backbreaking game. 
[Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2017.12.20"]
[Round "79.3"]
[White "Texel 1.07 64-bit 4CPU"]
[Black "Deep Shredder 13 64-bit 4CPU"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "3140"]
[BlackElo "3278"]
1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nf6 5. Nc3 O-O 6. Nf3 d5 7. e3 b6 8.
cxd5 exd5 9. b4 Qd6 10. Qb2 c6 11. Bd3 Nbd7 12. O-O a5 13. b5 c5 14. Qa3 Qc7
15. dxc5 Qxc5 16. Qxc5 Nxc5 17. Rfd1 g6 18. Bf1 Be6 19. Nd4 Ra7 20. Be2 Rc8 21.
Rac1 Kg7 22. Bf3 Rb7 23. h4 Rbc7 24. Nc6 Rd7 25. Rc2 Nce4 26. Na4 Rb7 27. Rdc1
Bd7 28. Be2 Nd6 29. g3 Bf5 30. Rd2 Bd7 31. Rd4 Be6 32. Kg2 h5 33. Rdd1 Nd7 34.
a3 Rbc7 35. Rc3 Ne4 36. Rc2 Nd6 37. Rcd2 Re8 38. Rd4 Nf5 39. R4d3 Nd6 40. Rd4
Nf5 41. R4d2 Nd6 42. Rc2 Rec8 43. Rb2 Rh8 44. Rc1 Rhc8 45. Rd1 Rh8 46. Kh2 Re8
47. Rc2 Rec8 48. Rcc1 Nb7 49. Kg2 Nd6 50. Rc2 Re8 51. Nc3 Nf6 52. Kg1 Rec8 53.
Na4 Nd7 54. Rb2 Rh8 55. Rbb1 Rf8 56. Rd4 Nf5 57. Rdd1 Nd6 58. Rbc1 Rfc8 59. Kg2
Kh7 60. Ra1 Re8 61. Rac1 Rec8 62. Nc3 Nf6 63. Rd4 Kg7 64. Na4 Nd7 65. Rcd1 Re8
66. Rc1 Rec8 67. Re1 Re8 68. Rb1 Bf5 69. Rc1 Be6 70. Nc3 Nf6 71. Kg1 Rec8 72.
Na4 Nd7 73. Ra1 Re8 74. Rdd1 Rh8 75. Kh2 Re8 76. Kg1 Rh8 77. Nc3 Nf6 78. Rac1
Rhc8 79. Bf1 Kf8 80. a4 Nb7 81. Ne2 Bd7 82. Ned4 Nc5 83. Ra1 Ne6 84. Nxe6+ fxe6
85. Ne5 Be8 86. Kg2 Kg7 87. Kg1 Ne4 88. Bd3 Kf6 89. Nf3 Nc3 90. Rd2 e5 91. Ng5
e4 92. Bf1 Bd7 93. Kg2 Bg4 94. Kg1 Ke5 95. Kh2 Rb8 96. Rd4 Rc5 97. Kg2 Bf5 98.
Nf7+ Kf6 99. Ng5 Rbc8 100. Rd2 Ke7 101. Kg1 Rf8 102. Kg2 Rb8 103. Rd4 Bg4 104.
Kg1 Rf8 105. Rd2 Rfc8 106. Kg2 Rd8 107. Kh2 Rcc8 108. Kg1 Rg8 109. Kh2 Rc7 110.
Kg2 Bf5 111. Rc2 Rc5 112. Rd2 Bg4 113. Kh1 Rh8 114. Kg2 Rc7 115. Kg1 Bf5 116.
Rc2 Rc5 117. Rd2 Rd8 118. Rd4 Rcc8 119. Kh1 Rc7 120. Kh2 Bg4 121. Rd2 Rc5 122.
Kh1 Bf5 123. Kg2 Kd7 124. Nf7 Re8 125. Ng5 Ke7 126. Kg1 Bg4 127. Kg2 Kd6 128.
Kg1 Rc7 129. Kh2 Ke5 130. Kg2 Rd7 131. Rd4 Rc8 132. Kg1 Rcc7 133. Kg2 Be2 134.
Ra3 Bd1 135. Ra1 Bg4 136. Nh3 Bxh3+ 137. Kxh3 Rf7 138. Kg2 Rf3 139. Rd2 Rf6
140. Kh1 Rd6 141. Rd4 Kf5 142. Kg2 Ke6 143. Rd2 Ke5 144. Rd4 Rd8 145. Kh2 Rf7
146. Rd2 Rc8 147. Kh1 Rcc7 148. Kh2 Rfd7 149. Rd4 Rd8 150. Kg2 Rg8 151. Kh3 g5
152. hxg5 Rxg5 153. Rd2 Rf5 154. Kg2 Rf8 155. Rc2 Rc5 156. Rd2 Rd8 157. Rd4 Rc7
158. Rc1 Rf8 159. Rd2 Rfc8 160. Rd4 Rh7 161. Kh3 Rc5 162. Ra1 Rd7 163. Kh4 Rcc7
164. Kh3 Rf7 165. Rd2 h4 166. gxh4 Rf3+ 167. Kg2 Rg7+ 168. Kh2 Rg4 169. Rc2 d4
170. exd4+ Kxd4 171. Rac1 Rxh4+ 172. Kg1 Rh5 173. Rd2+ Ke5 174. Bg2 Rd3 175.
Rxd3 Ne2+ 176. Kf1 exd3 177. Rc4 Rg5 178. Re4+ Kf6 179. Re3 Rxg2 180. Rxd3 Nf4
181. Rd6+ Ke5 182. Rxb6 Rh2 183. Kg1 Rh8 184. Rc6 Ne2+ 185. Kg2 Nd4 186. f4+
Kxf4 187. Rc5 Nb3 188. Rc3 Nd2 189. Rg3 Ke4 190. Kf2 Nc4 191. Rb3 Kd4 192. Rb1
Nb6 193. Ra1 Kc5 194. Ke3 Rh4 195. Kd3 Rxa4 196. Rg1 Rd4+ 197. Ke2 a4 198. Rh1
Kxb5 199. Ke3 Kc5 200. Kf3 a3 201. Rc1+ 0-1