MESON Chess Problem Database

Problem Display
PID: 104575 (8/4pp2/3p4/3QPkpK/8/8/5PN1/8 w - - 0 1)

Riczu, Lajos

Lud, 1964

8/4pp2/3p4/3QPkpK/8/8/5PN1/8

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f6
      • 2.e6#
  • Tries
    • 1.Sh4+?
      • 1...Kf4
        • 2.Qd4#
      • 1...gxh4!
    • 1.f4?
      • 1...gxf4
        • 2.Sh4#
      • 1...dxe5
        • 2.Qxe5#
      • 1...e6
        • 2.Qd3#
      • 1...f6
        • 2.e6#
      • 1...g4!
  • Keys
    • 1.f3!
      • 1...dxe5
        • 2.Qxf7#
      • 1...g4
        • 2.fxg4#
      • 1...e6
        • 2.Qe4#
      • 1...f6
        • 2.e6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAR(C)+P(D)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);XS(B)
    • Try
      • P(A);
      • Vars
        • P(b);N_GUARD,SBLOCK,XP(A)::S(B)
        • P(c);OGATE,P_SPINP(c),XP(D)::QAR1(C),XP(c)
        • P(d);SBLOCK::QAB(C)
        • P(e);SBLOCK::QAR(C)+P(D)
      • Refutation
        • P(b);
  • Actual
    • P(A);
    • Vars
      • P(c);P_SPINP(c),SBLOCK,XP(D)::QAR2(C),XP(e)
      • P(b);OGATE::P(A),XP(b)
      • P(d);SBLOCK::QAB1(C)
      • P(e);SBLOCK::QAR(C)+P(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).