82 



♦ KNOWLEDGE 



[Nov. 



1881. 



nombprn wc nro iisiiiK- navinR 210912 correct only to the ln«t 

 ['lacc but one (the rcnl number runs aiiCJUSS, Ac.) our roMult 

 cannot bo correct to n (rrcntcr doRroo of npproximntion. Therefore, 

 wo not down only the third decimnl figure. 



If, liowevcr, our dila would nllow us to tnko more out of our 

 logarithmic roRiilt than what was ]>u' in would permit, wc could 

 OBHily do it. ThuH : 



log. of result = 1-3110321 



log. of 20-508 = 1-3110233 



Difference — 88 



But wo SCO from the tables that difference between the logai-ithms 



to 20500 and 20508 is 212, so that wc must add to 20-5802Y2-"'S of 



-0001, or -00088 divided by 212, or 00012, making our answer 

 20-5081:J. 



Hut it may be said all this is very long and complicated ; might 

 one not as w'ell multiply 21-9012 by 1 13303 and divide the product 

 by 15366I-. It will bo found, however, that with a little practice it 

 takes but a few moments to take out a logaritlim, or to find the 

 number corres])oiKling to one. A few points have to be carefully 

 attended to, which we shall discuss with further illustrations of more 

 difficult examples in onr next. 



(!^ur €I)f«f£» Column. 



LEA\^KG to nest week the further analysis of the "Two 

 Kniglit.s' Defence," we give this week an illustrative game in 

 that oiiening, and a singularly pretty end-game which occurred in 

 actual play with " Mcphisto." 



GAME No. 2. 



Played liy " Mephisto " and Mr. Marriott, of Nottingham. 



Two Knights' Defknce. 



White. 

 Mk. M. 



1. P. to K.4. 



2. Kt. to K.B.3. 



3. B. to Q.B.4. 



4. P. to Q.4. (•). 



5. Castles C"). 



6. R. to K.sq. 



7. B. takes P. 



8. Kt. to Q.B.3. 



9. Kt. takes Kt. 



10. Kt. to K.Kt.3. ('). 



11. B. to K.B.I. 



12. R. toQ.B.sq. 



13. Kt. to K.4. 

 11-. P. to K.R.3. 



15. P. to Q.B. t. 



16. Kt. to K.Kt.3. 



17. Kt. takes B. 



18. Kt. to K.Kt.3. 



19. Q. to Q.U.i. 



20. Kt. to K.'l. 

 31. Kt. to K.B.6. 



22. R. to K.6. ('). 



23. P. to Q.B. 5. 

 2-1. Q.R. to K.sq. 



25. Q.R. takes B. C"). 

 2G. Q. takes R.P. 



27. Q. to R.sq.(ch.) 



28. Q. to R.'l.(ch.) 

 20. R. takes Kt. 



30. R. to K.2. 



31. R.toQ.2. 



32. P. to Q.Kt.4. 



33. Q. to Kt.G. 



34. P. to Q.R.4. 



35. Q. takes Q. 

 .36. K. to B.sq. 



37. R. ti. Q.Kt.2. 



38. P. to K.Kt.4. ("). 

 30. Kt. to Q.2. 



40. Kt. to B.4. 



41. R. to Q.Kt.sq. 



42. Kt. toQ.C. 



43. P. to Q.Kt.5. 



4t. P. takes R.P.(ch.) 

 Wliite resigns. 



1. P. to K.4. 



2. Kt. to Q.B.3. 



3. Kt. to K.B.3. 



4. P. takes P. 



5. Kt. takes P. (•=). 



6. P. to Q.4. 



7. Q. takes B. 



8. Q. to K.R.4. 

 0. B. to K.3. C). 



10. Q. to Q.4. 



11. Castles. 



12. B. to K.Kt.5. 



13. P. to K.R.3. 



14. B. to R.4. 



15. Q. toK.B.4. {<). 



16. Q. takes B. 



17. Q. to K.B.4. 



18. Q. to Q.2. 



19. P. to K.Kt.3. 



20. P. to K.B.4. (s). 



21. Q. to K.Kt.2. {•'). 



22. B. toQ.3. {'). 



23. Q. to K.B.2. 



24. B. to K.4. 



25. Kt. takes R. 



26. P. to B.3. (I). 



27. K. to B.2. 



28. K. to Kt.sq. 



29. Q. takes Kt. 



30. P. to Q.6. 



31. K.R. to K.sq. 



32. Q. to B.6. 



33. Q. to B.5. ("'). 



34. Q. to Q.R.3. 



35. P. takes Q. 



36. R. to K.5. 

 .37. P. to K.Kt.4. 

 38. P. to K.B.5. 

 30. R. to K.7. 



40. P. to Q.7. ("). 



41. P. to K.B.6. 



42. R. to Q.2. 



43. Q.R. to K.2. 



44. K. to R.sq. 



NOTES BY "MEPHISTO." 



(*) Although, ktrictly considered, Kt. to K.Kt.5 is the stronger 

 move, P. to Q.4 nevcrthelosH gives the first player a goo<i attacking 

 game ; it mostly leads to interesting variations of the (jiaoco jiiano 

 kind. 



C") If, instead of 5. Castlos, White plays 5. P. to K.5, the game ia 



transformed into a (iiuoco piano. Black replies with 5.P. to Q.t, 

 and by proper play ho will withstand the subsequent attack of 

 White, and retain the Pawn. 



(') If, instead of 5. h.t.take8P., Black plays 5. u. to Q.B.4,thpn we 

 have the Giuoco piano variation known as Max Lange's attack, fr»m 

 the name of its author, in which White again proceeds with 

 P. to K.5, as before. 



('') 0. B. to K.2 is given as best for Black, but we prefer the move 

 in the text. 



(') Here 10. B. to K.Kt.5 is given by the books, with the object 

 of preventing Black from Castling, if then P. to K.B.3, B. takes P . 

 The move in the text, however, shows a steady determmation to 

 attack the Queen's side, as shown in his 11th and 12th move. 



(') 15. P. takes P. en pass, would have been correct ; Black had 

 nothing to fear from \\1iite's attack j e <j., if, instead of Q. to K.B.4, 



IK i.^T 5- ,„Q.takesQ. ,„ Kt. takes P. _ 



15. P.takes P. en pass. 16 nT^bes Q. ^^- B. takes Kt. ^8- ^ ^^<^'> ^- 



(if Kt. takes R . then B. takes Kt. with a far better game). 



,Q R. to K.8(ch.) „., R. to K.4. ... , 



IS B in w R I 19. ^ ' 20. — With a good 



18. K. to K.B.4 J, j^ y2 P. to K.Kt.4. 



(») This is weak. Black, by P. to K.kt.3, tried to prevent the 

 entry of the Knights into his game. The move in the text allows 

 the Knight to play to K.B.6, and, if so inclined, afterwards to 

 the commanding position on Q.5. Black ought to have played 

 20. B. to K.2, in order to prevent this, followed, perhaps, by 

 P. to K.B.4^ 



C") 21. Q. to K.B.2 was the correct move. White would then have 

 obtained a very fine game by playing his Kt. to Q.5, followed by 

 the advance of the Queen's Pawns. 



(') This is a very fine move, and initiates a combination belonging 

 to the highest order of Chess play. We give a diagram of the 

 position. 



Position after Wliite's 22nd move. 

 Blace. 



(>) The position is one ol great .liHiculiv for Black. If Black 

 R\ takes^t^ ' ^ Q. to R.6. (c h.) 



l''''y^ "■ Q. to K.B.2 

 25. Kt. to K.5 winning 



K. to Kt.sq. 



C") In reply to 25. R. tak es Kt. instead of Q.R. takes B. Black 



would play 25. B. takes'^!. 



(') The only move to save the game. If, instead, Kt. takes Kt. 

 (ch.), with the idea of winning another piece, then Black loses his 



^ P. takes Kt. 

 Queen, c.j., 26. -rrrTTirr. ^ET /„i. \ 2/. 



28. 



R. takes P. (ch.) 

 P. takes R. 



Kt. takes Kt. (ch.) 



29. 



Q. takes Q. 



P. to B.3 

 whilst the move in the text 



("■) White still tries for a favourable chance by pushing his 

 Queen's Pn\vns on to the Black King, which plan Black, however, 

 frustrates by forcing the exchange of Queens. 



(") Played to stop the advance of the Knight's Paw n ; th e 

 Pawn cannot be captui-ed, as, after P. tf.kes P., and B. takes P., 

 White plays Kt. to K.5. 



(•) Threatening to Queen or win a piece if Kt. takes P. 



