MESON Chess Problem Database

Problem Display
PID: 266531 (8/1N6/B1p1p1p1/1pPkP1P1/4p1QK/4p1PN/p1P1P3/B7 w - - 0 1)

Bajtay, Jozsef

Probleemblad, 1950

8/1N6/B1p1p1p1/1pPkP1P1/4p1QK/4p1PN/p1P1P3/B7

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxe4#
    • 1...b4
      • 2.Sf4#
  • Tries
    • 1.Sg1?
      • 1...Kc4
        • 2.Qxe4#
      • 1...b4!
    • 1.Sf2?
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qxe4#
      • 1...exf2!
    • 1.Qf3?
      • 1...Kc4
        • 2.Qxe4#
      • 1...b4
        • 2.Sf4#
      • 1...exf3!
    • 1.Qf4?
      • 1...Kc4
        • 2.Qxe4#
      • 1...b4!
    • 1.c4+?
      • 1...bxc4
        • 2.Sf4#
      • 1...Kxc4!
  • Keys
    • 1.c3!
      • 1...Kc4
        • 2.Qxe6#
      • 1...Kxe5
        • 2.c4#
      • 1...b4
        • 2.c4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);N_GUARD,P_SPINP(c),S_FLIGHT::QAR2(F),XP(c)
    • P(d);::S(E)
  • Tries
    • Try
      • S(E);
      • Vars
        • K(e);N_GUARD,P_SPINP(c),S_FLIGHT::QAR2(F),XP(c)
      • Refutation
        • P(d);
    • Try
      • S(E);
      • Threat
        • QAB1(F),XP(c)
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(F),XP(c)
      • Refutation
        • P(b);XS(E)
    • Try
      • Q(F);P_PINP(c)
      • Vars
        • K(e);N_GUARD,N_SPINP(c),P_SPINP(d),S_FLIGHT::QAR2(F),XP(c)
        • P(d);::S(E)
      • Refutation
        • P(c);N_SPINP(c),XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(e);N_GUARD,P_SPINP(c),S_FLIGHT::QAR2(F),XP(c)
      • Refutation
        • P(d);
    • Try
      • P(B);CHECK
      • Vars
        • P(d);XP(B)::S(E)
      • Refutation
        • K(e);P_SPINP(c),S_FLIGHT,XP(B)
  • Actual
    • P(B);
    • Vars
      • K(e);N_GUARD,P_SPINP(c),S_FLIGHT::QAB(F),XP(g)
      • K(e);N_GUARD,P-FLIGHT,S_CUTP(d),XP(I)::B(A)+P(B)
      • P(d);N_GUARD::P(B)
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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).