MESON Chess Problem Database

Problem Display
PID: 266424 (3R4/1pr2r1b/8/2pQ4/3b4/2Nk2N1/1P6/1KB5 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2022

3R4/1pr2r1b/8/2pQ4/3b4/2Nk2N1/1P6/1KB5

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxd4#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Qb3#
      • 1...Rfd7
        • 2.Sf2#
      • 1...c4
        • 2.Qxd4#
      • 1...Rcd7!
    • 1.Sce2?
      • threat
        • 2.Qb3#
      • 1...Rfd7
        • 2.Sf4#
      • 1...c4
        • 2.Qxd4#
      • 1...Rcd7!
    • 1.Sa4?
      • threat
        • 2.Qb3#
      • 1...Rcd7
        • 2.Sxc5#
      • 1...c4
        • 2.Qxd4#
      • 1...Rfd7!
  • Keys
    • 1.Sce4!
      • threat
        • 2.Qb3#
      • 1...Rcd7
        • 2.Sxc5#
      • 1...Rfd7
        • 2.Sf2#
      • 1...c4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR1(F),XB(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(F)
      • Vars
        • R(f);N_GUARD::S(D)
        • P(c);N_GUARD::QAR1(F),XB(b)
      • Refutation
        • R(e);
    • Try
      • S(D);
      • Threat
        • QAR2(F)
      • Vars
        • R(f);N_GUARD::S(D)
        • P(c);N_GUARD::QAR1(F),XB(b)
      • Refutation
        • R(e);
    • Try
      • S(D);
      • Threat
        • QAR2(F)
      • Vars
        • R(e);N_GUARD::S(D),XP(c)
        • P(c);N_GUARD::QAR1(F),XB(b)
      • Refutation
        • R(f);
  • Actual
    • S(D);
    • Threat
      • QAR2(F)
    • Vars
      • R(e);N_GUARD::S(D),XP(c)
      • R(f);N_GUARD::S(D)
      • P(c);N_GUARD::QAR1(F),XB(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).