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Chess Tiger 15 strength 
On this page we have collected some test results from Chess Tiger 15.
A lot of work has been done on endgame evaluation. CT15 is able to avoid the draw and win when CT14 would just get a draw, and in some cases CT15 gets a draw when CT14 would just lose the game. Below are a few positions where Tiger 14 does very poorly (or do not solve them at all), and that Tiger 15 solves very easily:
rk6/pP1p4/K2p4/8/3P4/8/8/8 w - a3 0 1
CT14 doesn't see that after d5 Kc7 it has to play bxa8= B to avoid the draw. CT15 sees this instantly.
8/6kP/8/3b1PK1/8/6N1/8/8 w - - 0 1
Same here.
8/8/5k2/6bP/1K1N4/8/1B6/8 w - - 0 62
In this position, after playing Ne2+ Kf5 Bg7 Kf4 h6 Bxh6 CT14 displays a 0.00 score. CT15 has the correct evaluation.
kB6/2K5/8/8/b3N3/8/8/8 w - -
CT14 is unable to solve this mate. CT15 solves it instantly without the use of tablebases.
8/8/8/6Np/2N5/Pk6/6K1/8 w - a3 0 1
CT14 plays Ne5, which draws. CT15 plays the correct Ne4!There has also been a lot of work to improve the search, but this is mainly visible in middlegame positions. We will post some samples later.
Some results obtained during the beta period (thanks to Sarah)
2 x TB 1400, 5 Piece tablebases, Autoplayed.40/40 Tiger 15 Normal Style
+2 -2 =6 v Fritz 7 001
+3 -2 =5 v Hiarcs 8
+5 -1 =4 v Junior 7
+2 -2 =6 v Shredder Paderborn
+5 -2 =3 v Deep Fritz
+4 -2 =4 v Tiger 14.0
+4 -0 =6 v Gambit 2.0
+3 -2 =5 v Fritz 7 008
+3 -2 =5 v Shredder 6
+3 -3 =4 v Junior 6a
+6 -1 =3 v Crafty 18.15
+2 -1 =7 v Deep Fritz 7
Chess Fun Rating list october 2002
Minimum 70 games to qualify.
All 3,4 and 5 piece tablebases.
All programs using original books, excluding Crafty, SOS (CB) and Goliath Light
using general.ctg. Chessmaster 9000 includes games using general.ctg. Tiger 14
and Gambit 2.0 include games using Tiger.ctg and Ct.tbk.
All games minimum 30 mins, Majority 6700 over 60 mins.
Games are autoplayed ponder=on and single PC ponder=off.
Program Elo + - Games Score Av.Op. Draws
1 Tiger 15 normal style : 2675 38 31 247 60.1 % 2604 42.5 %
2 Deep Fritz 7 : 2669 42 40 194 60.8 % 2593 34.0 %
3 Tiger 15 gambit agressive : 2665 51 49 133 61.3 % 2586 33.8 %
4 Shredder Paderborn : 2634 55 41 142 54.2 % 2604 38.0 %
5 Fritz 7 : 2634 23 20 652 59.3 % 2568 39.7 %
6 Gambit Tiger 2.0 : 2624 22 18 768 58.7 % 2562 41.9 %
7 Fritz 7 (No MMX) : 2620 49 36 162 58.0 % 2564 44.4 %
8 Chess Tiger 14.0 : 2616 24 18 672 56.4 % 2572 43.2 %
9 Deep Fritz : 2609 28 22 505 55.1 % 2573 36.6 %
10 Junior 7 : 2608 31 26 448 52.6 % 2590 27.5 %
11 Hiarcs 8 : 2603 34 50 188 48.4 % 2614 40.4 %
12 Chessmaster 9000 : 2601 40 62 126 49.6 % 2604 42.1 %
13 Ruffian 1.0.0 : 2597 57 41 150 50.3 % 2595 32.7 %
14 Gambit Tiger 1.0 : 2576 36 29 321 55.0 % 2541 33.3 %
15 Shredder 5.32 : 2567 49 35 203 50.2 % 2566 33.5 %
16 Gandalf 5.1 : 2565 34 48 191 47.1 % 2585 40.8 %
17 Fritz 6 : 2561 19 14 1200 53.4 % 2537 36.6 %
18 Chess Tiger 13.0 : 2557 31 21 489 51.4 % 2547 41.1 %
19 Shredder 6 : 2557 30 44 246 49.4 % 2561 37.0 %
20 Deep Shredder : 2554 42 51 156 44.2 % 2595 34.6 %
Thanks to Sarah
Ordering information
The CDROM version of Chess Tiger 15 cost $46. While waiting for the CD-ROM to arrive you still have the option to download at no additional charge. The download only version costs $39. CDROM upgrade version costs $36. Download upgrade version cost only $29
Upgrade to Chess Tiger 15 is possible from the following older Rebel or Lokasoft versions:
Rebel 11.0
Rebel Century 4.0 Mega
Gandalf 5.0
ChessPartner 5.0 (From Lokasoft)
When ordering an upgrade be sure to have the original CD-ROMs as this is checked during the installation.
EC customers add 19% V.A.T. for the CD-ROM versions. Pricing includes shipping and handling.
Download size is 15 MB.
** Chess Tiger 15 has been sent to manuafacturing, CD-ROM version are expected in the 2nd week of october.
Download versions will soon be available in our online store. **
View the REBEL dealer list by phone
View the REBEL dealer list if you prefer email
View the latest Rebel Price list