Except working on chess knowledge considerable time is spend improving Rebel's tactical abilities by making the search more stable and by using the Singular Extensions technique as introduced by Deep Blue in the 90's. On this page some results are presented. Solution times and depth between brackets are given.

Diagram 1 Key-move 1...Rxb2!! Rebel-XP 11:31 (16) Rebel 12 0:09 (11) Source : Unknown. Comment: One of the most drastic examples of the power of Singular Extensions. Reason : Singular Extensions plus improved passed pawn handling. Diagram 2 Key-move 1.Qxg7+ is mate in 7 moves. Rebel-XP 3:43 (12) Rebel 12 0:34 (10) Source : Unknown. Comment: Reason : Singular Extensions. Diagram 3 Key-move 1.Rxg6+! Rebel-XP 0:42 (11) Rebel 12 0:04 (8) Source : Petrosian,T - Visier,S 1-0 (29) 1974 Comment: Reason : Singular Extensions. Diagram 4 Key-move 1...c4+ Rebel-XP 2:44 (15) Rebel 12 0:01 (9) Source : Unknown. Comment: Forces the draw. Reason : Singular Extensions. Diagram 5 Key-move 1...Rxe3! Rebel-XP 0:48 (12) Rebel 12 0:06 (10) Source : Unknown. Comment: Reason : Singular Extensions. Diagram 6 Key-move 1.Nxg7! Rebel-XP 0:37 (11) Rebel 12 0:02 (8) Source : Shianovsky,V - Spiridonov,N 1-0 (20) 1966 Comment: Reason : Singular Extensions. Diagram 7 Key-move 1.e6! Rebel-XP 0:07 (9) Rebel 12 0:01 (5) Source : Unknown. Comment: 2 examples of better search stability. Reason : Improved search stabilty. Diagram 8 Key-move 1.Qf2!! Rebel-XP Rebel-XP not after 5:00 Rebel 12 0:12 (9) Source : Unknown. Comment: Reason : Improved search stabilty. You will find more examples of Rebel's improved understanding of the game of chess in the offered download.