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Bla.l nos makes a p.sirional srrilice ol a pawn. By<br />
blockinqe4and de.rinA e5 he limi(s thc rin8c oJ white s<br />
mlnor plcccs and exiends the rmlc or his osn 18.. c4<br />
19 drcl d4 2l) Bc2 N.5 2l Rf6 Qs7 22 Qfz N34 2l<br />
Qr5+ K68 24 Rr'16 Rid6 25 Ol4Qc5 26 Qxe5 Nxes<br />
27Rl5Ng4 23dRC6 2SNc1Nc3 loNxe3dxe3 llRr<br />
Rds 32 Rrer Rd2 Blac* wins<br />
Penoe Tal Leipzig O\ftpiad 1960 Modein Bcmni<br />
In 1971 suEr'\ chosc rhh eame ro shos onreNporary<br />
fl ddk gJme iiitrr'y emphd\zinA wh,E! po\i'ionil<br />
vrnhr".n n'neteend mu\c ld4Nlh:!4!6 rN.l<br />
ci 'h! ,1 d5 exd5 5 cxd5 d6 6 c4 96 7 tsd3 Bg7 3 Ngez l)0<br />
9o-0a6 10a4().? llhlNbdT 12llRcs lrNg3.1 11<br />
Bc2Nci 15 Qfl Nfdr 16Bclb5 lTaxbi Rbs LSOf2<br />
PRETI 263<br />
tlelel.oment of ne* rdeas attributed io srEbtrz<br />
rrrtr wirom tre staUlrneA a nrm fnenLlshrp !nd <strong>to</strong><br />
whom he mav have showo the iders olthc Enslish<br />
school Gees;loolsotscsEss).ln 18?2 the London<br />
ches Cluh, represented <strong>by</strong> Blackburne, soRwrrz.<br />
Ldw.NrH^r. Potier- Stcinitz, andwsrcr. bcsan a<br />
corespondence maLh ol l*o ganes agaiost a<br />
Vic.nese team led <strong>by</strong> (oxscs for stakes oM00 a<br />
side. (Tte moles were sent <strong>by</strong> telesr.ph and<br />
conlimcd <strong>by</strong> lelter.) Unable <strong>to</strong> accePl the idcas ol<br />
Poue. and Steinilz- rhe resl oi the London team<br />
sootr wnhdrew, lcaving lhese rvo <strong>to</strong> playon.<strong>The</strong>y<br />
won $e malch. Subsequently Steinit declared<br />
rhal modero chesJ began ivitb lhese two games.<br />
POTTER VARIAIION. 516, introduced in lhc<br />
l8?0s and probably Whne-s best continuation in<br />
thn <strong>to</strong>rm oithe s.orcts GAME<br />
PR AGI JF] VARIATION. 60 in ihe oUTE\.S GNU<br />
Decli.ed playcd in tbe Praguc <strong>to</strong>umament i908.<br />
L9 c5 dxc5 20 f5 Bb7 2l Radl tsag 22 .-e4 Na4 2l<br />
Bxi4 bxa4 24 rxe6 fx36 25 Qfl+ Ift3 26 Nc5 Qa? 27<br />
QxdT OxdT 23 NrdT R{b2 29 Nh6 Rbr 30 Nxc4 Rds<br />
3l J6 R.:l 32 Rcl Rrcl lrRxc1tsd5 34Nb6Rb3:r5<br />
Ne4 h6 16 d7 Btu 37 R.3 Bc7 33 B.s Bh4 39 s3<br />
Bla.k Esisns (For. sioilar 5a ilie se.'roRcHtr,.)<br />
POSTAGE STAMPS. see PsI<br />
POSIAI CHESS. see coRREs<br />
POST.KEY PLAY, or actLd play, play that follo*<br />
thc keyolaproblen. lnaDrRr,ovAlEpkoBLEMand<br />
most olher kinds ol problem the ruY and thc<br />
posl key play rogcthe.lorn lhe solulion<br />
POST MOR|EM, exlmination of a Sade soo.<br />
aftcr it has ended. Playcn olten crowd thc board<br />
throwing in theircommenls. AlLhough su.h aoaly<br />
sab[requentl} \uperhcril Fs^mctimesuseLlara<br />
bJ!\ l.r nrblishe.l ann.tJnons thar rcmarn unchJl'<br />
POTTI]R, WILLIAM NORWOOD O84O-95),<br />
lcading Englisb daye. oI the 1870s, barnster's<br />
clerk He mct stlong opposiiio. in ody one<br />
ronrnament. Lo.don 18?6. when he rook 1hnd<br />
ptace alter BuCGURN. and zlcRroRr. ln malch<br />
ptay be losr <strong>to</strong> zuker<strong>to</strong>n in 1875 (+2=8 1) .nd<br />
d.ew with MAsoN in 1879 (+5:Ll 5). PoGrwas<br />
edirot af$e Landon <strong>Chess</strong> Mogdzne ( 1871-6) and<br />
Nrcre lot the w4thinst* Pape^<br />
^nd<br />
La"d anll<br />
Ita,er. @nrribulnrg annotations ofa high standard<br />
<strong>to</strong> all three journ.ls. He plared a p.rt in thc<br />
PREPARTD VARIA ON, a line of play in the<br />
opening piepared before aganecommences <strong>The</strong><br />
line mieht be from a lexlbook o. recent <strong>to</strong>urnameol<br />
play or night bc devised <strong>by</strong> a player. An<br />
unwary oppoicnt migbr aloq this linc <strong>to</strong> be<br />
played. othc ne rr cdn br \et asidc for a future<br />
o!.a\ion. Preparanon 6J(.ld as thegame but nn.<br />
subslitule ior t.lent. Fo. ex<strong>amp</strong>le, in thc list<br />
impoiant marchcs oI lhe nodern ganc, in 1834,<br />
M.DoNNELL prepared sode BIsnoP's cA ur laria<br />
dons bul hh opponent souRDoNN^rs svePr lhcm<br />
aside with ease. For anolher debrcle ol lhis kind<br />
Tlese failures are no<br />
argumc nt agains t prepar ati o n whi ch is necessary i n<br />
ercater or leser degrce al all leleh ol play.<br />
,Anxious ro do espccially Nell at San Rcmo 1930,<br />
cxtensivepreparation fo.each and<br />
^LEGrNEmadc every opponent. He would probably have won rhe<br />
<strong>to</strong>uilament wnhoul such laborr but not, perhaps,<br />
b, such a decisive maBin. Ever inoeasine .um'<br />
bers olnewidcas in lheopeninC are beingevolved.<br />
and rhc pa.e ofcbange continucsio accelerate. Al<br />
grandnraster level i1 is notsufficientlo knoN whar<br />
others pl.yed a lcw moothsbelore bul rather whal<br />
rhel pLc)(d n the ai lnr or rq^ qceks. Mr\lcrJ<br />
have hcLnme sarJ ol prepikd varirriuh n( is<br />
oilcn shownin thenopeningplayi theynay belcss<br />
concerned roplaylhc besl nove tban <strong>to</strong> avoidthe<br />
possibiliryofa prepared line. iBagincd or real In<br />
the sond ch<strong>amp</strong>ionshiP match of 1972 FBCHER,<br />
conscious oI the invenlilc capability othis Sovict<br />
opponenfs back up lcams, successiully laricd his<br />
up
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