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  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    1/8

    EDITOR:

    SOLUTIONS

    EDITOR:

    SELECTIONS

    EDITOR:

    THE

    PROBLEMIST

    SUPPLEMENT

    ISSUE

    1

    MAY 1992

    B

    D Stephenson,

    I

    Roydfietd

    Drive,

    Warerrhorpe,

    SHEFFTELD,

    S19 6ND

    M McDowell,

    76 Bosron

    Avenue,

    SOUTHEND-ON-SEA,

    Essex,

    SS2 6JB

    J

    R

    Coward, 25

    Elmwood

    Avenue,

    HARROW,

    Middtesex.

    HAg

    8AJ

    Welcome

    to the first

    issue

    of our

    new

    supplement

    lo

    The

    Problemlst

    The intention

    is

    to

    supply

    explanatory

    material

    for

    those

    new

    to

    chess

    composition.

    As

    far

    as

    possible, solutions wili be given in full and

    all

    terms will

    be

    defined.

    .

    All

    originals

    printed

    here

    will

    take

    part

    in

    the

    normal

    Problemist

    tournaments.

    do

    that

    publication

    in

    this

    supplement

    will

    be

    equivalent

    to

    publication

    in

    the main

    magavrne.

    For

    this

    supplement,

    I

    am lookinq

    for

    straightforward

    originals

    of all

    types.

    ld6allv,

    they should

    be

    pointed,

    well

    constructed,

    arid

    have

    entertainment

    value.

    lf

    you

    think

    that

    you

    have

    anything

    suitable,

    plilase

    submit it

    in..the normal

    way

    to the

    appropriate

    sub-

    editor,

    stating

    that you

    consider'it

    may

    be

    suitable

    for

    the

    supplement.

    lf

    you

    have

    already

    submitted

    something

    ivnicn

    is

    awaiting

    publication,

    but whiCh

    vou

    think

    would

    be better

    published

    here,

    pkiase

    write

    to

    the

    sub-editor

    and

    advise him..

    The

    supplement

    will

    have

    its

    own

    unified

    solving

    ladder

    and all will

    be eligible

    to

    enter

    it.

    Prizes

    will

    be

    in

    line

    wilh

    the main

    Jnag.azlne.

    Solving

    rules

    are explained

    later

    In

    lhrs

    rssue.

    .

    Problemists

    use

    algebraic

    notation,

    just

    tne same as many

    players

    do,

    but

    we use

    'S'

    (an

    abbreviation

    for

    'Springer',

    the

    German

    word

    for

    a chess

    Kniqht)

    tdstand

    for

    Kniqht.

    This

    is

    because

    'N'-is

    used for

    someth-ing

    else...

    We

    start this issue

    with

    an expert

    analvsis

    by

    John

    Coward

    ol three

    probldms

    sele6ted

    by him.

    lt

    is

    intended

    that

    this

    becomes

    a

    regular

    series.

    lf

    any

    reader

    wishes

    to

    write

    a short

    article,

    suitable

    for

    beginners,

    on any

    aspect

    ot cness

    composilion,

    I

    would

    be

    very

    pleased

    to

    receive

    it.

    SELECTIONS

    (A)

    is

    a two-mover,

    the

    '#2'

    under the

    diagram

    being

    shorthand

    for

    'White

    to

    play

    and mate

    in

    two

    moves aqainst

    anv defence'.

    l

    is

    a

    prizewinner

    by American-composer

    Frederick

    Gamage

    (1882-1

    957). This

    tipe

    of

    problem

    is

    called

    an incomplete

    biock.

    Mates

    are

    already

    provided,

    or

    bet,

    for

    some

    of

    black's moves

    (if

    it

    were his

    move),

    but

    the

    position

    seems very

    open,

    so the

    solver

    might

    well look

    for

    a key

    (White's

    first

    move)

    with

    a

    threat;

    but,

    surprisinolv,

    the kev is

    a

    waiter

    (making

    no

    thieat),-comptetin

    the

    DlocK.

    (A)

    F

    W GAMAGE

    1st Prize,

    American

    Chess Butletin,

    1940

    :r:ii:::i:

    : :til:i::::il

    :::t::::::lif

    #2

    There

    is-a

    clue

    to

    the

    key

    move,

    if

    you

    look

    at

    119

    yvs 0;

    il controls two squares

    in

    the bK's

    fiefd

    -

    d5

    and d7,

    but both

    of these

    are

    already

    well

    guarded.

    lf

    White

    tried 1.Kf8

    or

    1.Kf7

    as

    a

    key,

    he would

    be

    relying

    on the

    Sf6 to

    guard

    67, and

    at the same

    t-ime

    threatening

    2.e8=S

    #;

    but there

    are several

    BDS

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    2/8

    r

    '

    l'

    ',',

    '

    ,,

    WY

    I

    A',

    g

    r

    ,A

    :^

    :Atr'

    AA,A

    .........'.....'.i.,.,

    ..l

    l...gi.....

    l..

    AEO

    ,::::l.l;.l,::::l

    :.::Al

    A:.:,.:.:.lll:l::;

    A

    '''

    :,....,,,

    =

    '\

    T-

    I

    /\

    IJ

    s#2

    -

    z-

    moves defeating

    this

    -

    1...Re4,Qe3,Qb4

    or

    Rb4.

    So

    why

    is

    the

    Sf6 there?

    On closer

    insoection, one sees

    that

    White

    has

    to do

    something

    about

    1...Qb4

    or

    1...Rb4,

    threatening

    to escape

    with

    2...Kxcs.

    This illustrates

    an

    important

    guide

    for

    solvers.

    lf

    you

    see

    a parlicularly strong

    Black

    move,

    which

    hasn't

    got

    a

    mate set

    for it,

    look

    for

    a

    key which

    provides

    a

    mate

    for it.

    The solution

    is

    -

    Z.KCJ

    +

    2.Rc4 *

    z-Kco

    f,

    2.Qh6

    #

    2

    -Rxd4

    *

    L.Sd? zugzwang.

    1...Qf4,Qe3,Rd3

    1...Re4

    1...Rd5

    1. . .Qb4,Qd3,

    Ra4, Rb4,

    Rr4'

    f4

    A was) can

    also

    be

    found in

    selfmates.

    Here

    mates

    -

    or

    White

    replies

    forcing

    Black

    to

    mate

    -

    are

    already set

    for all

    3

    Black moves.

    For

    example,

    if it

    were Black's move in

    the

    diagram

    position,

    and

    he

    played

    1...Qxh5,

    Whlte

    would

    play

    2.Q96+, torcing Black

    to

    play 2...Qx96

    #.

    White can only

    maintain

    this

    zugzwang

    by

    a

    key

    move which

    spoils all

    these

    lines,

    but

    it substitutes

    new

    ones.

    This

    type of

    problem

    is

    called

    a mutate. To

    appreciate

    it fully the solver

    should notice

    all

    the set

    play

    and the changes.

    The setting

    may appear

    rather heavy,

    but

    firstlv, since there

    is

    no

    threat, all unwanted

    Black moves

    (eg.

    1...Oh3) have

    to be

    "plugged",

    and secondly,

    selfmate is

    a

    much

    more

    restrictive medium

    for

    the

    composer

    than direct

    mate

    -

    especially

    in

    the

    construction

    of a

    number of changed

    lines

    of

    play.

    Nevertheless,

    the

    composer

    finds

    a

    pleasingly

    simple

    mechanism

    for

    achieving

    3

    cnanges.

    Solution

    -

    SeL

    play

    -

    1...Qxf4

    2.Kd6+

    Qxe5

    #

    1...Qxh5

    2.Q96+

    Qxqf6

    *

    1...Qx95

    2-Qe7+

    QxeT

    +

    I.d6l

    zugzwang.

    t

    . .

    .QxI4

    2.Kd5

    i

    Qxe5

    {

    I

    .

    . .Qxh5

    2.Qt]

    +

    Qxtl

    #

    1...Qxq5

    2.Qq8+

    QxgS

    #

    The

    bQ

    and bRd4 are

    half-pinned

    on

    the

    d-file against

    the

    bK.

    When one

    moves

    away

    it leaves the

    other

    unable

    to

    move.

    Ot

    special

    interest

    here

    is the

    move

    1...Qf4,

    pinninq

    the

    bRd4,

    but

    unpinning

    the

    bRg3,

    thus

    forcing

    White

    to

    play

    2.Rc3

    #

    shutting

    off the

    bRg3.

    Two other specific

    wR

    moves,

    2.8c6

    #

    and

    2.Rc4 # are

    separately

    forced,

    the

    latter taking

    advantage

    ot the

    pinned

    bQ.

    Other

    Black

    moves,

    not

    given

    above

    because

    of

    lack of space,

    lead to a

    choice o{

    mates

    by

    White.

    Such

    choices

    are

    called

    duals.

    (B)

    S

    MLADENOVTC

    The Problemist,

    1987

    (B)

    is a selfmate,

    the

    'S#2'

    under

    the

    diaoram

    meanino

    'White

    to

    olav

    and

    force

    Bta6k

    to

    mate

    Wlite

    in

    2 moVed'. Some

    of

    the

    ideas found

    in

    direct

    mate

    problems (as

    (c)

    T GARAI

    3rd

    Prize,

    The Problemist,

    1986

    tfl

    I

    t

    I

    raa:

    .3

    ^

    .:

    E..il'

    A

    ah:

    t I

    :.'

    f-l

    ..

    :..

    ...:ll.'.''.

    .. li.....i

    ....,.

    ....

    ..,. ..i...t...,'.i

    A

    .'...l..'i.il...li.

    A

    ..'..u..i,.'.'.

    I

    l;:::'ll::

    *

    l:l:il:l:.::':l:.o

    A'

    'r^

    "

    a

    H#2

    Two

    solutions

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    3/8

    (C)

    is

    a

    helpmate,

    the

    'H#2'

    under the

    diagram

    indicating

    'Black

    plays

    first

    and co-

    operates with White to enable White to mate

    Black

    on his

    (White's)

    second

    move'. There

    is

    a convention that the shorter helDmates

    should have 2

    (or

    more)

    solutions,

    which

    should

    be

    thematicallv

    similar.

    or

    well

    'twinned'. Also,

    the

    m-aterial

    used

    should

    take

    part

    in

    all solutions, as

    far

    as

    possible.

    Looking

    at this

    problem

    as a solver, what

    is

    the

    wPf2

    doing?

    lt

    is not

    controlling

    a

    souare

    in

    the

    bK's field.

    Solvers should

    always

    remember

    that the bK

    is not

    always

    mated

    on

    his

    stafting square, but

    here

    he

    clearly

    is.

    He cannot

    be

    mated

    on

    94,

    so the

    wPf2

    must move,

    to

    control

    94

    or

    95.

    White's

    other

    move

    -

    his

    mating move

    -

    should

    be

    obvious when we

    come

    to

    it,

    but

    the clever

    part

    is Black's two

    moves,

    when

    a

    lot

    happens in

    both solutions.

    Most

    importantly,

    Black

    checks on

    his

    second

    move

    and White replies with

    mate by

    discovery;

    this type

    of

    problem

    is called

    a

    cross-checker. The

    lines

    for

    both

    White's

    R

    and

    B

    are cleared

    so that one delivers

    mate

    while

    the

    other

    pins

    a

    Black

    piece

    which

    would

    otherwise

    have

    interposed;

    and

    another Black

    piece

    (not pinned)

    which could

    also

    have

    othenryise interposed, is

    shut off by

    a

    Black

    piece.

    This

    is called

    black

    interference. The

    same two Black

    pieces

    -

    R and

    S

    -

    are used

    in

    both solutions,

    with

    theirfunctions

    reversed in

    each. Clearly, the

    solutions

    are

    well

    'twinned'.

    2.Se6+ in

    one solution

    is

    called

    a self-pin.

    In

    the'other

    solution, the same

    result

    is

    achieved by what is called

    a

    half-pin;

    after

    1.Rxd5,

    if

    either

    this

    R

    or

    the

    bS

    moves

    off

    the

    rank,

    the other one is

    pinned.

    Solutions

    -

    1.Rdb7 f3

    2.Sxe6+ d6 r

    1-Rxd5 f4 2.str,7+ e'7

    #

    JRC

    ORIGINALS

    Our first

    set of originals are

    not

    all original

    because of

    a

    lack

    of

    material

    -

    so composers

    olease

    note

    PS1

    is

    by

    a

    little known

    British

    composer

    of the last

    century. I hope

    that

    it

    brings

    enjoyment.

    PS2 is

    by

    another

    little known

    composer,

    this time from

    Sweden.

    Afier

    these two

    ouotations

    we

    can

    savour two

    originals

    fr

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    4/8

    -4-

    PS2 FOERIKSSON PS3 DJSHIRE

    Mora Tidning, 1935

    (Canterbury)

    PS1 R

    KELLY

    (Source

    unknown)

    PS4

    BP BARNES

    (Rochestel

    PS7

    B

    BOROVIK

    (Ukraine)

    PSs M PFEIFFER

    1st Prize,

    Tecza. 1931

    PS8

    S

    MLADENOVIC

    (Yugoslavia)

    PS6 V

    KOZHAKIN

    (cts)

    K

    CAMERON

    #3

    PS9

    w\l

    -

    1,,,

    ,

    .

    '^A.,.s...

    ,....',...lll

    g

    i..:

    ...t...

    ::it:iia

    #2

    ,,,, ,,,,l,,.

    i6t:

    t:::rilr::::i:l

    I|-::

    .::

    :..

    ;

    ........:

    a

    .::

    :A :.:::

    A

    ii,i]:]|iliii

    j]:*:::A.]]i*:

    .I

    ,ll,

    n' :':'

    'rf'l

    :I:}

    TJ

    #2

    t

    A I

    :::,

    Illrtl

    A

    ,&r:

    _4.

    ,i[.

    #2

    (tries)

    ,,:::::::t::::

    :i]t::::::::::At::::,:i:i::

    :E'.

    A,

    H::il :i:A'::*:'f:r

    fr,

    :':

    I,

    ,,,:,i'

    ,,,

    I

    ,:

    ...'...,.,....i

    .,.,.,.,.,1

    '',,

    ,'

    ,,,,,,1:::,:,t

    /l

    t,:,:i:tl:::tt,,,,,,,,,,,,,,,

    :::,,:i:::l

    . .

    -r\

    qr+:

    :

    El l4'

    *lE-e

    ^

    6Jt3

    l]l:::::]::il]:*il

    ::fii::

    :;:]]:i:i:::,

    .,....:,t,,...

    ..........l'.. i

    ......ll.A

    ^

    ,i:,. ,

    tl, ::

    :,

    ,,,,,,

    (-

    ,,,:t::

    A

    :,1:,

    fj

    l-i

    :::::

    #3

    #3

    Four solutions

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    5/8

    PS1O

    ASLESARENKO

    (Russia)

    H#2

    Two

    solutions

    PS13

    MGREENACRE

    (lpswich)

    s#2

    PS16

    A

    VASILFfiKO-;:

    (lJkraine)

    .

    ^.

    H#3

    Circe

    Two solutions

    -5-

    PSl1

    N BANTYSH

    (cts)

    H#3

    2 solutions

    PS14

    ASHURYAKOV

    (Uknine)

    SH=77

    PS12

    B EDWARDS

    (Paisley)

    PSl5

    LGROLMAN

    H#3

    Circe

    Two

    solutions

    (b)

    e6=wS

    PS18 FSABOL

    (Czechoslovakia)

    SH#4

    Circe

    (b)wRa2

    ->

    h3

    P$TZ

    TKAFDOS

    (llungary)

    SH#l0

    Grasshopper f1

    .....'.,....iiliiit,,..i,...ilii'iit.'ii...i

    .;;:::::",:";

    ""::i::::'

    irt:ilirtii:::

    :::lrii:::rri

    iiti:i

    l::u

    ill;,,,,,o,,,

    l;:;l

    l:l

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    6/8

    SOLVING

    RULES

    A

    correct

    solution

    is:

    (d

    Direct

    mates, selfmates

    and

    reflexmates:

    (i)

    2-movers

    -

    a correci

    keymove.

    (ii)

    3

    moves

    or

    more: a correct

    l(eymove

    and

    at

    least

    one

    correcl continuation

    (as

    tar as the

    last White

    move belore

    mate)

    leading

    to

    a

    forced mate

    in

    the stipulated

    number

    of moves

    (or

    the

    number o{

    moves claimed

    for

    a short

    solution).

    (b)

    Helpmates'. a

    @rrecl sequence

    of

    moves ending

    in mate.

    rc)

    A

    carred

    claim of

    no solution.

    There will be three

    scoring

    levels:

    (a)

    Male in 2, selfmate

    in 2, rellexrnate

    in

    2.

    (b)

    Mate

    in

    3, selfmate

    in 3,

    reflexmate in 3,

    helDmate

    in 2.

    (c)

    Male in 4 or more,

    seif

    mate in 4 or more,

    reflexmate

    in 4 or

    more, helpmate

    in 3 or

    more.

    Solutions

    will be awarded

    points

    as

    follows:

    (a)

    A

    correct

    solution lo

    a single

    problem,

    the

    stipulated

    number

    of

    correct

    solutions

    to

    a

    mulli-solution

    or

    correcl solulions

    to all

    parts

    of

    a

    multi-part

    problem.

    In

    a

    helpmate

    a

    solution

    must be

    given

    lor

    each

    stipulated sel-play.

    A

    duplex

    problem

    counts

    as

    a

    problem

    with

    2

    solutions.

    (b)

    Penalty

    for

    tailing

    to

    give

    a

    correct

    continuation

    when the correct

    keymove

    has

    been

    given (does not

    apply

    to

    helpmates

    where

    a complete

    sequence

    of

    moves must be

    given

    to

    get

    a score).

    bc

    (c)

    Penalty lor

    missing

    or

    incorrecl solution

    in

    a

    multi-solution

    or

    multi-part

    problem

    or

    for

    an incorrect additional solution.

    (d)

    Bonus

    for additional

    correct solution

    or

    lor a solution

    in less than the slipulated

    number

    of

    moves

    (not

    more than

    one

    bonus score

    per

    problem).

    4.

    ll

    the

    diagram

    shows an

    illegal

    position,

    the

    problem

    should

    be solved

    as

    if it were

    legal

    and

    points

    will be awarded

    as above.

    A

    correct

    claim

    of

    illegality

    will score a

    bonus o1

    1

    point.

    An incorrect claim

    of

    illegality

    will incur a

    penalty

    ol

    1

    point.

    -6-

    5.

    No

    score

    ot

    less than zero

    will

    be

    given

    for

    a

    problem.

    PROBLEM

    CONVENTIONS

    by

    Michael

    McDowell

    The most basic oroblem

    convention

    is

    that

    a

    problem

    should

    be

    a

    legal

    position,

    that

    is

    one

    which could

    be

    arrived

    at

    from the

    starting

    posilion

    of

    a

    game.

    This avoids

    unaesthelic

    monstrosities

    such

    as a

    white

    bishop

    on a1

    hemmed

    in by a white

    pawn

    on

    b2.

    Composers

    often

    construct

    illegal

    positions

    as

    jokes

    to entertain their

    friends,

    but

    occasionaily

    a

    serious composition

    is

    published

    without

    the

    illegality

    being

    immediately

    evident.

    A

    good

    example

    is

    the

    rniniature

    (1),

    with its

    pieasing

    echoed

    mates

    atter

    capture

    of

    the

    knights. I

    wonder

    how

    many solvers

    at the time

    noticed

    that

    black

    coulil

    not

    have

    played

    last?

    (1)

    R COLLTNSON

    London

    Telegraph,

    1907

    1.Qa7

    [2.Qe3

    O

    Kxg4

    3.Qf4

    #]

    1...Kx95

    2.Qg'l+

    Kh4

    3.Sf5

    1.

    .

    .Kx94

    2.Qe3

    O

    Kh4

    3.Qf4

    #

    1...Kx93

    2.QgI+

    Kh4 3.Sf3 #

    Another

    convention,

    aimed at

    avoiding

    uqlv

    oositions,

    holds that

    there

    should

    not be

    pionioted

    force

    in the diagram.

    While

    few

    would disagree

    that a

    position

    ieaturing

    six

    bishoos

    and

    five

    rooks

    would

    hold

    little

    appeal

    lor

    a

    casual

    solver

    (not

    to

    mention

    the

    difiiculty

    of setting

    up such

    a

    position

    without

    a

    second

    set

    of

    pieces),

    the

    rule

    is

    relaxed

    somewhat in the 6ase

    oi

    positions containing

    obtrusive

    force.

    In

    (2)

    the black bishop

    on

    d4 clearlv

    did

    not come

    from

    f8,

    but

    the

    attractiveness

    of

    the setting

    is

    hardly

    corilpromised.

    This

    masterpiece

    by

    abc

    abc

    1-2-3

    abc

    123

    tt

    EI

    :::::::

    |:-t-

    :

    ,,::r+\

    :::i

    :::t=:l

    .. ?r

    A

    #3

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    7/8

    Loshinski

    illustrates

    the very

    difficult

    task

    of

    four

    mates

    following

    black-self-interference

    changed

    between

    set

    and actual

    play,

    and

    it

    would

    be absurd

    to lose

    such

    a'marvellous

    problem

    through

    the over-rigid

    application

    of

    a debatable

    convention.

    (2)

    L I LOSHINSKI

    1st Prize.

    e.a. Russian

    Sports

    Committee, 1948

    qaf

    hl.r'

    -

    -7

    -

    problems

    in

    which

    a

    small adjustment

    to

    the

    diagram

    creates

    a second

    problem

    with new

    p ay.

    (5)

    is

    a

    fine

    exampie, with

    the

    black

    king

    visiting

    his four

    diagonal

    or

    star-flights

    in

    (a)

    and his

    four

    lateral

    or

    plus-flights

    in

    (b).

    (3)

    NGGVANDTJK

    (Atler

    B Larsson)

    Ostledingen, 1959

    1,

    .Kfz

    t

    (2

    .

    Qxbl

    *

    )

    1.

    -

    .S- 2.Qa7

    #

    (4)

    E A

    DUGAS

    The

    Problemist,

    1980

    I.

    . .BaZ 2

    .Fxa'l

    *

    1.

    . .Sf4 2.cxd4

    #

    1...Sf6

    2.Se6

    #

    1...e6

    2.Bd6

    #

    1...Qe6

    2.Sxe6

    #

    Sofut ion

    1.Sc7

    . .Eaz

    1...Sf4

    1.

    . . Sf

    6

    1...e6

    1.

    . .Qe6

    1.

    . .0x95

    1-..Qxc5+

    1...Qd6

    f .

    - -Kes

    (2.Qd5

    #)

    2.5a6

    +

    2.Se4

    #

    2.Sce6

    #

    2.Qf8

    #

    2

    . Scxe6

    #

    2.Sce6

    #

    2.Qxc6

    *

    2.Rb5

    #

    2.Sxe4

    #

    Castling

    is

    allowed

    in

    a

    problem

    as

    long

    as it

    cannot

    be

    proved

    that

    either

    kino

    or rook

    has

    moved

    in

    the

    plav

    leadino

    ud

    to the

    diagram.

    ln

    (8) (yeb,

    f know

    thb nitmbering

    ts

    stily,

    but

    that's

    my

    fault, not Michael's

    -

    Ed/

    castling

    appears

    as

    a set

    mate,

    neatly

    c.hanged

    by the

    key,

    but in

    (3),

    castling ia

    rllegal,

    as

    the

    white

    pawns

    have

    not moved

    and hence

    the black king

    must have

    reached

    a2 via

    d1 ot

    d2

    afier hiicounterpart

    vacated

    e1.

    En

    passant,

    on the

    other hand,

    is

    only

    legal

    as

    a

    key move

    if

    it

    can

    be

    proved

    tha:t

    the last

    move

    was

    a

    double

    pawn-step.

    (4)

    is

    a simple

    example

    which

    needs

    no

    exolanation.

    Many

    problems

    add

    variety

    by havinq

    multiple

    phases.

    Set mates- foll6w

    btacl

    moves

    from the diagram, while the variations

    which follow

    the

    key move

    form

    the actual

    play.

    Tries

    are

    attdmpted keys

    which fail

    to

    a

    single

    black

    defence,

    and will

    be

    considered

    in

    a separate

    article.

    Twins

    are

    1.hxg

    ep

    (2.97

    #l

    1...Bh7

    2.Rxh7

    #

    Much

    rarer

    than

    the twin

    is

    the

    multi-

    solution

    problem

    in which

    there is more

    than

    one

    intended

    solution

    in

    the diagram.

    Composers

    vary

    in

    their

    attitudes to

    -such

    compositions;

    however

    (6) gives

    some idea

    of

    their

    possibilities.

    The

    famous

    Indian

    theme

    (in

    which

    a

    piece crosses

    a

    critical

    square

    in

    order

    to

    allow a

    second

    piece

    to

    interfere

    on

    that

    square

    and

    release

    a

    potential

    stalemate) is

    shown four

    times

    with

    great

    clarity

    and remarkable

    economy

    of

    #2

    #2

  • 7/23/2019 THE PROBLEMIST SUPPLEMENT 001

    8/8

    means.

    Finally, where

    possible

    the

    key move

    of a

    problem

    should be thematic, that

    is it

    should

    introduce the

    play

    which follows. With many

    complex

    ideas

    such a

    key is impractical,

    but

    il

    achieved

    it adds considerably

    to

    the

    enjoyment and value of a

    problem.

    Consider

    (7),

    where

    1.Kd6

    grants

    the

    black

    king

    his

    pair

    of

    flights, while allowing the

    rook

    checks

    which form

    the core o{ the oroblem. Gerald

    Anderson must have

    been delighted

    to

    find

    that

    he

    could

    incorporate

    such

    a

    wonderful

    Key.

    (5)

    J J GILL

    (AJterc

    Latzel)

    1st HM.. The Problemist.

    l967

    (b)

    wSeT

    ->

    t5

    1.Re3+

    1...Kd6 2.Se8

    #

    1...Kxf6

    2.Qxb2

    #

    1...Kf4 2.Sfd5

    #

    1...Kd4 2.Sf5

    #

    1 cEql

    -.'^-.'.n^

    1...Kxf5 2.Re2

    #

    1...Ke6 2.Rb5

    #

    1.

    .

    .Kd5

    2.Re3

    #

    1...Ke4 2.Rc5

    #

    (6)

    w seecxrtrlnN,

    H STAUDTE

    &

    B

    scHwARzKopF

    Aachener Nachrichten, 1966

    -8-

    1.Ra3

    96

    2.Bb3 Kd3

    L.8a2

    96

    2.Rb3 Kd5

    1.Rf8

    96

    2.Bf7

    Kf5

    1.898

    96

    2.Rf7

    Kd5

    (7)

    G

    F

    ANDERSON

    ll

    Secolo,

    1919

    3.Bd5

    {

    3.Rb4

    +

    3.Bd5

    {

    3.Rf4

    {

    1

    . Kc7-d6 |

    12

    .Qe'l-b'1

    1. . .Rd3+

    2.Bd5

    #

    f...Hgo+ z.bea

    T

    1.

    . .Kb6

    2.8c2

    +

    1.

    -

    .Kb4

    2

    -Kxc6

    #

    (8)

    C

    S

    KTPPTNG

    Falkirk Herald, 1923

    1

    -Rh4

    zugzwang

    t...oJ l.Kxc4

    i

    r. .ez z.ET+ x

    1...B- 2.S(x)b3

    or S(x)

    *)

    #2

    (b)

    #3\

    (4

    Solutions)

    :li:ir:::i

    fi::

    r:::::::::,i::::

    :::::r,::::

    ::-::

    Ar;.11i...1L'

    .ili

    ....

    ii,....t... i

    ..,....i.'...l

    H:

    .gl.A

    1,,:,:;,,:1,1,1,,.;.,;,:,;

    t,,::

    ii::::i:i:i:.

    :ll....i,...:.

    .:i].::.,.]i:.i,

    Atti

    ,,...:.,.:.,i

    .E

    #2

    .,/\.

    Ig

    ^

    t,l

    A::i*.:

    r: Iii

    :t :

    .:;;i]:::i'l,l::;ili

    ,l

    ,

    l,,:

    .'n.'.

    ..TJ:::

    fi l\:::.':::.r

    E E:::I

    : :i

    :l:..

    .........::: : .ll:: :. ..

    ........:: :l

    :: :i:

    ::i:::::]::::::

    l:: :i:.::::

    :

    .:.:. .:.:.{i:.:.

    :

    .i l

    :,AA.

    iii..iii.i.il

    A

    i..'i

    ....'. f

    ... .s4+ /\:,,, lJ [l;


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