MESON Chess Problem Database

Problem Display
PID: 76364 (1b1n4/pn6/4pQN1/4p1p1/1N2kp2/2PR4/5K2/7b w - - 0 1)

Ahues, Herbert Siegfried Oskar

Troll, 2007

1b1n4/pn6/4pQN1/4p1p1/1N2kp2/2PR4/5K2/7b

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qxe5#
    • 1...f3
      • 2.Re3#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qg6#
      • 1...f3
        • 2.Re3#
      • 1...Sd6!
    • 1.Sxe5?
      • threat
        • 2.Rd4#
      • 1...Bxe5
        • 2.Qg6#
      • 1...Sc6!
    • 1.Se7?
      • threat
        • 2.Qg6#
      • 1...f3
        • 2.Re3#
      • 1...Sd6!
    • 1.Sf8?
      • threat
        • 2.Qg6#
      • 1...f3
        • 2.Re3#
      • 1...Sd6!
    • 1.Sh8?
      • threat
        • 2.Qg6#
      • 1...f3
        • 2.Re3#
      • 1...Sd6!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Re3#
      • 1...exf4
        • 2.Rd4#
      • 1...gxf4
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(h);S_CUTB(i)::QAR1(E),XP(d)
    • P(c);N_GUARD::R1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(E)
      • Vars
        • P(c);N_GUARD::R1(C)
      • Refutation
        • S(h);
    • Try
      • S(F);XP(d)
      • Threat
        • R1(C)
      • Vars
        • B(i);SBLOCK,XS(F)::QAB(E)
      • Refutation
        • S(j);
    • Try
      • S(F);
      • Threat
        • QAB(E)
      • Vars
        • P(c);N_GUARD::R1(C)
      • Refutation
        • S(h);
    • Try
      • S(F);
      • Threat
        • QAB(E)
      • Vars
        • P(c);N_GUARD::R1(C)
      • Refutation
        • S(h);
    • Try
      • S(F);
      • Threat
        • QAB(E)
      • Vars
        • P(c);N_GUARD::R1(C)
      • Refutation
        • S(h);
  • Actual
    • S(F);XP(c)
    • Threat
      • R1(C)
    • Vars
      • P(d);N_GUARD,XS(F)::R1(C)
      • P(e);SBLOCK,XS(F)::QAB(E)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).