tChess Pro
Features
Screen shots
Engine
Analysis mode
Opening library
Extended lib...
PGN support
Dual core
iCloud
tChess Pro Analysis Mode

tChess Pro's Analysis Mode is like carrying a chess master in your pocket.

When Analysis Mode is turned on, tChess Pro gives you its "expert opinion" about the position on the screen by running its engine and displaying the output in real-time. It tells you which side is winning and by how much, and it gives you the recommended sequence of moves. As you move back and forward in the move list, the engine output is updated automatically.




Here is an explanation of the analyis mode output from the screen shot above, i.e.:
[12]  -0.38  Qb4 Nxc3 bxc3 Nxe4 Bxe7 Qe8 Rd3 Rb8

Search depth
The first number (in brackets) indicates how many moves* ahead the engine is searching. In this case, the engine is currently searching 12 moves ahead. The number increases as the engine searches deeper.

Position's score
The second number (-0.38 in this case) indicates that white is losing by 0.38 pawns.
If white was winning, the number would be positive.
This number is an estimate that takes into account many positional advantages and disadvantages that are programmed to be worth fractions of a pawn each.

Sequence of moves
After the position's score, you can see a sequence of moves in Standard Algebraic Notation.
This is the sequence that the engine thinks is optimal for both sides from this point in the game forward.



* Really ply, or half-moves, in chess jargon.
© 2013 Tom Kerrigan tchessgame@gmail.com