MESON Chess Problem Database

Problem Display
PID: 274030 (2qr4/B1p5/7R/RP1kP3/K3N1p1/3P3B/1Qn2P2/n1r5 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

2qr4/B1p5/7R/RP1kP3/K3N1p1/3P3B/1Qn2P2/n1r5

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qd4#
    • 1...Sa3
      • 2.Qd4#
    • 1...Se3
      • 2.Qd4#
    • 1...Sb4
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...g3
      • 2.Sf6#
    • 1...c5
      • 2.bxc5 ep#
    • 1...c6
      • 2.bxc6#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qc5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...c5
        • 2.bxc5 ep#
      • 1...Sb3!
  • Keys
    • 1.f4!
      • threat
        • 2.Sc3#
      • 1...gxf4 ep
        • 2.Sf6#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...c5
        • 2.bxc5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD::QAR1(A)
    • S(c);N_GUARD::QAR1(A),XS(c)
    • P(d);::S(F)
    • P(f);OGATE::R(G)+P(H),XP(f),EP
    • P(f);OGATE::R(G)+P(H),XP(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR1(A)
        • P(f);OGATE::R(G)+P(H),XP(f),EP
      • Refutation
        • S(a);
  • Actual
    • P(B);
    • Threat
      • S(F)
    • Vars
      • P(d);EP,XP(B)::S(F)
      • S(c);N_GUARD::QAR1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • P(f);OGATE::R(G)+P(H),XP(f),EP
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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).