-bug-fix for FRC..
-adjustement of king position bonus in late endgame when there are pawns only at one side of the board.

version 1.71:

-bug-fix for FRC..
-bug-fix for multipv mode..

version 1.7:

-FRC supported as Winboard engine.
-MultiPV support as UCI engine.
-"Very short PVs" problem fixed in part.
-Search improvement mainly using reductions.
-bug-fix about amyan rarely giving away its rook for free in KR vs KRP ending.
-Eval changes, which don't seem to make much difference anyway: attacking/pinning other pieces slighty higher again, decreased slighty some mobility bonus(ouch), and center pawns bonuses are zeroed now in late endgame instead of just scaled.

expected elo increase: 40 ELO at least at fast time controls.

version 1.62:

-UCI mode slowdown of up to 10%(in my laptop) for very fast games was fixed (the problem was present since Amyan 1.58.)
-Wrong implementation of UCI_Elo which could cause an enormous slowdown even when not used was fixed.
-queen value increased by 0.1 pawn.
-passed pawn in the first ranks value increased by about 0.1 pawn.
-pieces attacking or pinning others, all bonuses were increased in 10%.
-some search changes of very low impact, the "biggest" is that amyan now hash the qsearch too. Optimal hash size for amyan increased a little bit.

expected elo increase: Less than 10 elo.

version 1.61:

-Bug-fix for Analisis Mode under Winboard(this is because an incomplete refactoring I did years ago.)
-Minor hash table optimization.

version 1.6:

-Futility margins adjusted.
-Move ordering and search windows adjusted slighty.
-Improved null-move usage restrictions.
-support for UCI_Elo command(this is a promise I made to someone, I have some others too, one at a time one at a time..).

expected elo increase: 50 ELO at least at fast time controls.