MESON Chess Problem Database

Problem Display
PID: 144342 (2N5/2p5/3P4/3kr1nR/2R3Q1/Kb6/8/6n1 w - - 0 1)

Pape, Edouard

Good Companions, 1923

2N5/2p5/3P4/3kr1nR/2R3Q1/Kb6/8/6n1

#2

6 + 6

274 diagrammes 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
    • 1...Re6
      • 2.Qd4#
    • 1...Sf3
      • 2.Qg8#
    • 1...Sh3
      • 2.Qg8#
    • 1...Se4
      • 2.Qg8#
    • 1...Se6
      • 2.Qe4#
    • 1...Sh7
      • 2.Qg8#
    • 1...cxd6
      • 2.Sb6#
  • Tries
    • 1.Sb6+?
      • 1...Kxd6
        • 2.Qd7#
      • 1...cxb6!
  • Keys
    • 1.Kb4!
      • threat
        • 2.Rc5#
      • 1...c5+
        • 2.Rxc5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...cxd6
        • 2.Sb6#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Se4
        • 2.Qg8#
      • 1...Se6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD,P_SPINS(e)::QAB1(C),XR(d)
    • R(d);P_SPINS(e),SBLOCK::QAR1(C)
    • S(e);OGATE,P_SPINR(d)::QAB(C)
    • S(e);N_GUARD,P_SPINR(d),SBLOCK::QAB1(C)
    • P(f);N_GUARD,SBLOCK,XP(E)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::QAR1(C)
      • Refutation
        • P(f);XS(F)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • R1(B)
    • Vars
      • P(f);CHECK::R1(B),XP(f)
      • B(b);OGATE,XR(B)::QAB1(C),XB(b)
      • P(f);N_GUARD,SBLOCK,XP(E)::S(F)
      • R(d);N_GUARD,P_PINR(B),P_SPINS(e)::QAB1(C),XR(d)
      • R(d);OGATEB::QAR2(C),XR(d)
      • S(e);OGATE,P_SPINR(d)::QAB(C)
      • S(e);N_GUARD,P_SPINR(d),SBLOCK::QAB1(C)
HTML5 logo

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).