MESON Chess Problem Database

Problem Display
PID: 6653 (5NqB/1B2R2r/4n3/5pn1/4pk2/1Q5p/K3PN2/5R2 w - - 0 1)

Paros, Gyorgy

1/2 Prize, Magyar Sakkvilag, 1932

5NqB/1B2R2r/4n3/5pn1/4pk2/1Q5p/K3PN2/5R2

#2

9 + 8

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Sxg6#
    • 1...Qxh8
      • 2.Sg6#
    • 1...Sf7
      • 2.Sxe6#
    • 1...Sd4
      • 2.Be5#
    • 1...Sc5
      • 2.Be5#
    • 1...Sc7
      • 2.Be5#
    • 1...Sg7
      • 2.Sg6#
    • 1...Sd8
      • 2.Be5#
    • 1...Sxf8
      • 2.Be5#
  • Tries
    • 1.Sxe4+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Kg4!
  • Keys
    • 1.Rg1!
      • threat
        • 2.Qg3#
      • 1...Sxf8
        • 2.Be5#
      • 1...Sf3
        • 2.e3#
      • 1...Sf7
        • 2.Sxe6#
      • 1...Sd4
        • 2.Be5#
      • 1...Sc5
        • 2.Be5#
      • 1...Sc7
        • 2.Be5#
      • 1...Sg7
        • 2.Sg6#
      • 1...Sd8
        • 2.Be5#
      • 1...e3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(h);N_GUARD::S(H),XQ(h)
    • Q(h);N_GUARD,XB(I)::S(H)
    • S(e);N_GUARD,S_CUTQ(h)::S(H),XS(f)
    • S(f);P_PINQ(E)::B(I)
    • S(f);P_PINQ(E),S_CUTQ(h)::S(H)
    • S(f);P_PINQ(E),XS(H)::B(I)
  • Tries
    • Try
      • S(D);CHECK,XP(b)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(E),XS(e)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(A);
    • Threat
      • QAB1(E)
    • Vars
      • S(f);P_PINQ(E),XS(H)::B(I)
      • S(e);SBLOCK::P(C)
      • S(e);N_GUARD,S_CUTQ(h)::S(H),XS(f)
      • S(f);P_PINQ(E)::B(I)
      • S(f);P_PINQ(E),S_CUTQ(h)::S(H)
      • P(b);N_GUARD,SBLOCK::S(D)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).