MESON Chess Problem Database

Problem Display
PID: 133724 (2bn3q/1pBk1Ppr/1P6/8/K2p1Nr1/2RNR2B/7n/3Q4 w - - 0 1)

Goldschmidt, Ervin

1st Prize, Cincinnati Enquirer, 1929

2bn3q/1pBk1Ppr/1P6/8/K2p1Nr1/2RNR2B/7n/3Q4

#2

10 + 10

35 L'Italia Scacchistica 1930
23 Die Schwalbe 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.fxe8Q#
      • 2.fxe8B#
    • 1...Sc6
      • 2.Sc5#
    • 1...dxc3
      • 2.Sb4#
  • Tries
    • 1.Qxg4+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxg4!
    • 1.f8Q?
      • threat
        • 2.Se5#
        • 2.Re7#
        • 2.Qd6#
        • 2.Qe7#
      • 1...dxc3
        • 2.Sb4#
        • 2.Se5#
        • 2.Qd6#
      • 1...dxe3
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Se5#
      • 1...Rh5
        • 2.Re7#
        • 2.Qd6#
        • 2.Qe7#
      • 1...Rh6
        • 2.Se5#
        • 2.Re7#
        • 2.Qe7#
      • 1...Sf3
        • 2.Re7#
        • 2.Qd6#
        • 2.Qe7#
      • 1...Sc6
        • 2.Sc5#
        • 2.Qd6#
        • 2.Qf5#
      • 1...Se6
        • 2.Se5#
        • 2.Qf7#
      • 1...Sf7
        • 2.Re7#
        • 2.Qe7#
        • 2.Qxf7#
      • 1...g5
        • 2.Qd6#
      • 1...g6
        • 2.Qd6#
      • 1...Qxf8!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Re7#
      • 1...dxc3+
        • 2.Sb4#
      • 1...dxe3+
        • 2.Sdf4#
      • 1...Qe8
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Qf8
        • 2.Sxf8#
      • 1...Sc6
        • 2.Sc5#
      • 1...Se6
        • 2.Sde5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(j);OGATE::PXQ(j)=Q
    • S(i);SBLOCK::S(C)
    • P(b);P_PINS(G),XR(B)::QAR(A)+S(C)
  • Tries
    • Try
      • Q(A);CHECK,XR(c)
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(A),XS(i)
      • Refutation
        • S(a);P_SPINS(a),XQ(A)
    • Try
      • P(J);
      • Threat
        • DUALS(4)
      • Vars
        • P(f);::QAR1(J)
      • Refutation
        • Q(j);XQ(J)
  • Actual
    • S(G);
    • Threat
      • R1(D)
    • Vars
      • P(b);CHECK,XR(B)::QAR(A)+S(C)
      • P(b);CHECK,XR(D)::QAR(A)+S(C)
      • Q(j);OGATE::PXQ(j)=Q
      • Q(j);N_GUARD::S(G),XQ(j)
      • S(i);SBLOCK::S(C)
      • S(i);N_SPINR(c),SBLOCK::S(C)
HTML5 logo

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).