330 



KNOWLEDGE • 



[Fxa 10, 1882. 



(Pur Cl)r5s Column. 



Knd !;nnic itmly, hy tlio vptomn itn 



II. ir- IV llorwit/ 



WHITE. 



Wtite to play and ^ 



Mr. GrimsKaw has amended his prolilcm in a vory Ingenious 

 manner, adopting the position by the addition of simply a I'awn to 

 both the solutions that his original problem admitted. He has 

 thereby madi- two problems out of one, which, although looking 

 almost exactly alike, nevei'thcloss piii'""ly lifTorcnt ideas. 



Xo. 18. 



By W. Grimshaw. 



Br.icK. 



No. 19. 



By W. Grimshaw. 



Bi,.icic. 



, t< 



t VJ 



it •# 5 -. ■ 



Wnur. 



lite to play aiul mate in three moT« 



Solution. 



Q. to Kt..5. P. takes Q. 



Kt. to Kt.5. and mates 



nc.^t move. 



WniTr. 

 White to play and mate in three move?. 

 Solution. 

 Kt. to B.5. B. takes Kt. 

 Q. to K.6. and mates 

 neit move. 



It will be seen that the addition of a WTiite Pawn in the first 

 problem on Kt.3 renders Q. to Kt. 5 useless, as White now does not 

 threaten mate by Q. from Kt..") to Kt.sq. Then again, in the second 

 problem, the addition of a Black Pawn on I!. 2 prevcnt.s the first 

 solution, as. after Kt. to H.5, B. takes Kt., the Q., of course, cannot 

 now go to I^.G. We are glad to see that our remarks on the original 

 problem, published in the lUnslrated London News, have had such 

 a satistactor}' result, llio twin-problem, as it nny bo called, is a 

 perfect Chess cariosity. 



C0I?1?KCTU")N. 

 S'llution of Problem in No. 8, page 171. 



White. 



1. K. to K.3. 



2. R. to Q.Kt.7. 



3. R. to K.7, mate. 



Br,.\CK. 



1. K. takes Kt. 



2. K. takes I!. 



2. Any other move. 



3. Rook dincovern chork nc- 

 conlingly, and mates, 



2. n. to Q.I.. .Ii«. ch. 



3. R. to n.O. mat*. 



2. Q.R. Inkrs B.. din. eh. 



3. Q.R. to U.O. mate. 



1. n. token P.(ch.) 



2. K. to K.3. 



1. n. ton.5.(ci. ) 



2. K. to K.3. 



AX,'?WKR,S TO CORRK.SPONDENTB. 

 *,• rlcane adtlrma Chfu-Kiliior. 

 W. Goddcn. — Solution of Problem No. 14 correct. You are right ; 

 it is a beantiful composition. 



A. J. Martin. — If you assert anything most emphatically, and 

 especially if yon are right, as you were in this case, yon need never 

 feiir nor tremble ! See correction. .Self-mate in where While 

 compels Black to mate him. 



J. P. — Yon were right ; see correction. No. li right. 



B. Pierce. — In the Evans Gambit, against corrert defence the first 

 player loses less than a Pawn, as he has some attack for the 

 abandoned Pawn. You can safely decline the Gambit by playing 

 4. B. to Q.Kt.3. We, however, prefer to accept it. i 



G. Woodcock. — No. 9, incorrect — P. to B.6. is the move ; 10| 

 correct ; II, incorrect ; 12, correct. In note (*), read P. to K.R.4.; 

 in note ('), R. to B.sq. 



Mahnie. — No. 14, incorrect — B. lo R.4. is the move ; 15, correct. 



A. C. Skinner. — Solution of No. 14 correct and neat. 



Vicar. — Solution of No. 1.5, correct; 11, B. to R.4. 



W. Thurman. — Solutions correct. Thanks for problem. 



Salford. — -Solution of No. 11 incorrect. i 



S. L. P. — Solution of No. 14 correct, only you hare reversed thi 

 board. • 



Geo. O'Donnell. — Solution of No. 14 incorrect — try B. to B.ft 

 In No. 15, White compels Black to mate him in two moves. 



G. M.— Solution of No. 14 incorrect— try B. to R.4. 



Arthur Black. — Received with thanks. 



F. H. I.— Solutions correct. 



Contents of Knowledge iTo. 14. 



^ 



PIOX. 



The Air of Stove-TTeated Koom». 



Bv W. MattieuWilliama 2Si 



Tmi'ng on the Sun. By the Editor. 286 

 Found Linki.— Part III. By Dr. 



Andrew Wilson, F.R.S,E.,ic 2<iS 



Intellisence in Animals 289 



Xiuhtfl with a Three-inch Telescope. 



Bv '■ A Fellow of the Royal .\stro- 



nomical Society." {lUualraUdA 290 

 Brain Troubles ;' Partial loss of 



Speech 291 



Rryisws; Science Ladders — Science 



for All— The Science of the Stars . 293 

 The Effects of Tobacco.— Part I. By 



Dr. Muir Ho 



292 



• Grant on Meteorology ... 29i 



I 



Eaay Lessons in Blowpipe Cbemistiy. 



— Lesson II. By Lieut. -Coloiul 



W. A. Ross. laleR.X. .. 

 Kflluria and Health: The Ua« •! 



Fleas, Ac; Fish "Sounds." By 



W. Maltieu Williams 



CoEBHSpoirnilscit; Tele-scope 



—Volcanic Projectiles, ic... 



Star Map for February 



Queries 



Replies to Qaeriea 



Answers to Correspondents t'l 



Notes on Art and Science »'. 



Our Mathematical Column 3 •: 



Our Chess Column »« 



Our Whist Colamn SOt 



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