November, 1902.] 



KNOWLEDGE 



203 



most suitable for observation as soon as it is dark ; on 

 tlie same ilatfis be sets about 10.30 p.m. and p m. 

 respectivelv. His polar diameter is diminishing, bein^ 

 37" ou the 1st and 34" on the 30th. He is in quadrature 

 with the sun on the 2nd at 2 a.m. 



The following' are among the more interestmg of the 

 satellite phenomena visible at Greenwich : — 



Diiy. B. M. Duy, 



Saturn is an evening star, setting on the 1st about 9 p.m., 

 and on the 30th about 7.30 p.m. The best time f^r 

 observing the planet is during the earlier part of the 

 month immediately after dark. The ring is widely open 

 aud northern surface visible On the tith of the month 

 Saturn is in conjunction with the moon at 5 p.m. ; the 

 planet being 5i° to the south. 



Uranus is approaching conjunction with the sun au<l 

 cannot be observed. 



Neptune is well placed throughout the month, rising on 

 the l.jth about 7 p.m. The planet is still close to ju. G-enii 

 norum, and may be seen in the same fi'-M of view with a 

 low power. On the 1st their respective positions are: — 

 R. A. Declination. 



Neptune ... 6h. 15m. 22s. N. 22° 16'. 

 H Geminorum Gh. 17m. Gs. N. 22° 34'. 



The Stabs. — About 9 p.m. at the middle of the month. 

 the following constellations may be observed : — 

 Zenith . Cassiopeia. 

 South . Andromeda, Pisces, Cetus; Pegasus, Aqu irius 



towards S. W. 

 West . Aquila, Cygnus, Lyra a little north of west. 



Corona N.W., setting. 

 East . Auriga, Perseus, Pleiades, Taurus ; Aries to 



the S.E. ; Orion rising S.E. 

 North . Ursa Major, Ursa Minor, Ce]>heus ; Draco a 



little west of north. 

 Minima of Algol will occur ou the 5th at 9.55 p.m , 

 8th at 6.44 P.M., 25th at 11 38 p.m., 28th at 8.26 p.m. 



(!!ri)css (Column. 



By C. D. LococK, b.a. 



Communications for this column should be addressed 

 to C. D. LococK, Netherfield, Camberley, and be posted 

 bv the 10th of e;ich month. 



Solutions of October Problems. 



No. 16. 



Key-move. —1. Kt to B4. 



If 1. 

 1. 

 1. 

 1. 

 1. 



QxB, 

 Qto B3, 

 Kt to R3, 

 Q to K3, 

 P to Kt4, etc.. 



2. R to K.^ch, etc. 

 2. Q X BP, etc. 

 2. KxQ, etc. 

 2. R X Q, etc. 

 2. Q to B7ch, etc. 



[There are duals after Q x R, bv 2. Q to B7ch, or 2. Q 

 X KtPch ; after K x R, bv 2. Q x BPch. or 2. Q to Kt(uh ; 

 after Q to Kt2, bv 2. Q x'BP, or 2 Q to r^Tch ■ after Kt to 

 B3, by 2. QxKtPch, or 2. RxQ; after P to Kt3, by 2. 

 Q to B7ch, or RxQ. There is also a trijile coutinuation 

 after Q to Q3, and a quadruple after Q to Ksq. Evidently- 

 some of these might have been stopped.] 



No. 17. 



Key-move. — 1. R to Kt4. 



If 1. 

 1. 

 1. 



K to K2, 

 K to K4, 

 B to Kt2, 



[The same applies to 1. 

 with varying mates.] 



RxQ. 

 RxBP, 



2. Kt to B8ch, etc. 

 2. B to B4ch, etc. 

 2. Q to Rsq. ch, etc. 



P X li and R x KtP, etc. 



2. Kt to Q5ch, et<;. 

 2. Q X R (R4) ch, etc. 



[After P x P and other moves, there is a dual by 2. Q 

 to Rsq. ch, or 2. Kt to Q5ch ; and after R to KtG a triple, 

 by the same two moves aud 2 Qx Rch.] 



No. 18. 



Key-move. — 1 R to KG. 



If 1. . . . QPxR. 2. QxPch, etc. 



1. . . . P toQ3. 2 RxPch. etc. 



1. . . . KxR, 2. Q toBGch, etc. 



1. . . . BtoKt4, 2. RxBch, etc. 



1. . . . Rto R2, 2. BxP, etc. 



1. . . . Others, 2. Q x B, etc. 



After some hesitation I have come to the conclusion 

 that a solver cannot score points for a triple, quadruple, 

 etc., when he has already scored them for a dual in which 

 any two of the continuations occur. For example, the 

 triple in No. 17 is in reality only a repeated dual, with an 

 additional continuation thrown in. It cannot score, 

 therefore, for a solver who has already scored for the dual. 

 So also the trijile in No. 16 does not score for those who 

 have claimed the duals after Q x R and Q to Kt2 ; while 

 the quadruple would not score when any other dual has 

 been claimed, except that after K X R. 



Solutions received from W.Nash, 8, 5, 3 ; "Alpha," 

 4, 0, ; W. Jay, 9, 5, 4 ; G. Woodcock, 5, 4, 4; " Tamen," 

 8,4, 4 ; C. Johnston, 6, 5, 4; " Looker-on," 9, 5, 4 ; J. W. 

 Dawson, 6, 4, 4 ; Lt.-Colonel Damauia, 4, 4, 4. 



W. Nash. — The dual claimed in No. 18 does not appear 

 to be correct, e j/., 1. . . . P to Kt4 ; 2. R x R, P x R ; 3. (?). 

 Your claim in No. 16, after " P moves," was also incorrect, 

 but as you distinctly stated that you claimed nothing for 

 it, I have been able to deduct nothing. 



" Tamen." — Both your letters bore the correct post-mark 

 this time. 



J. W. Dawson. — Tour claim for dual in No. 17 after 

 1. ... B to K7, by RxP, etc., does not appear to be 

 correct. Black replies 2. . . . RxKtP or B to Kt2. 

 Certainly a composer may vote for his own problem, and 

 place it wherever he thinks fit ; and such vote « ill carry 

 equal weight with others. This, in fact, is a necessity, as 

 the composers of the problems will not be kno^vn to me 

 till some time later. 



Lt.-Col. Damania. — Key-moves only are preferred, but 

 during the progress of tlie Problem Tourney points are 

 being awarded for duals on the second move. 



