Enter Your Reply The Comment You're Replying To H. G. Muller wrote on Sun, Nov 2, 2008 01:28 PM UTC:I have run some tests on Keen and Quing, in the context of the normal FIDE opening array. I always forget which is which, so I like to refer to the piece that moves like a pedestrian, but kills at a distance (mKcQ) a 'Trapper', and the one that moves far, and then tramples around in destruction (mQcK) a 'Tourist'. (The Knight-like counterparts of those could then be 'Hunter' for mNcQ and 'Pegasus' for mQcN.) One Trapper lightly beats the Bishop pair, perhaps by as much as a quarter Pawn. With the Kaufman values B=325 and B-pair bonus = 50, this would give Traper = 725. Two Tourists beat R+N by at least half a Pawn (perhaps 75cP). With the Kaufman values R=500 and N=325, this would make Tourist = 450. So it is indeed clear that the extra captures make the piece much stronger than having these same moves as non-captures. This should be compared with the Commoner (opening) value, which is slightly below that of a Knight (so ~300). Note there are clear non-linear effects: adding the distant non-capture moves to the Commoner ups the value from 300 to 450 (+150cP), while adding the same moves to the Trapper ups the value from 725 to 950-975 (the Kaufman Q value), i.e. +225 to +250. Edit Form You may not post a new comment, because ItemID Themed Chess does not match any item.