LoA awareness
While fiddling around with the position of the previous post, it became apparent that black's Rc2 was a blunder. Let's look again at the position, but before the blunder. BLACK to move 2r1r1k1/p3bp1p/1p4p1/3q1p2/8/1P2PR1Q/PB4PP/R5K1 b - - 1 27 The arrows indicate the LoAs (lines of attack) What are black's options to prevent the mate? Bg5 => gives black control over h6 (on the LoA) h5 => closes the LoA Qd8 => gives black control over h4 (on the LoA) Qe4 => gives black control over h4 (on the LoA) Bf8 => gives black control over h6 (on the LoA) f6 => closes the long diagonal (LoA) f4 => gives black control over h5 (on the LoA) LoA awareness prunes the tree of analysis. Only moves that check the LoAs need consideration. This gives a more precise picture of the tempi. Only tempi that have an influence on the LoAs are relevant. Rc2 is a blunder because it has no effect on the LoAs. The move Rc2 is typically inspired by blacks own LoAs, without considering...