MESON Chess Problem Database

Problem Display
PID: 140189 (3K4/3p1p2/2Pkpp2/1R1P1B2/8/8/4Q3/8 w - - 0 1)

Nordlohne, Gerard A

Probleemblad, 1975

3K4/3p1p2/2Pkpp2/1R1P1B2/8/8/4Q3/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...exf5
      • 2.Qe7#
  • Tries
    • 1.Qb2?
      • 1...exd5
        • 2.Qxf6#
      • 1...exf5
        • 2.Qxf6#
      • 1...e5
        • 2.Qa3#
        • 2.Qb4#
      • 1...dxc6!
    • 1.Qe4?
      • 1...exd5
        • 2.Qxd5#
      • 1...exf5
        • 2.Qf4#
        • 2.Qe7#
      • 1...e5
        • 2.Qb4#
      • 1...dxc6!
  • Keys
    • 1.Qd2!
      • 1...Ke5
        • 2.d6#
      • 1...exd5
        • 2.Qxd5#
      • 1...exf5
        • 2.Qf4#
      • 1...dxc6
        • 2.dxe6#
      • 1...e5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XB(D)::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(b);OGATEB,XP(C)::QAR2(A),XP(c)
        • P(b);OGATEB,XB(D)::QAR2(A),XP(c)
      • Refutation
        • P(d);XP(E)
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE,XP(C)::QAR1(A),XP(b)
        • P(b);SBLOCK::QAB(A)
      • Refutation
        • P(d);XP(E)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATE,S_FLIGHT::R(B)+P(C)
      • P(b);OGATE,P_SPINP(b),XP(C)::QAR1(A),XP(b)
      • P(b);N_GUARD,XB(D)::QAB(A)
      • P(d);SBLOCK,XP(E)::QAR(A)+P(C),XP(b)
      • P(b);SBLOCK::QAB(A)
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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).