MESON Chess Problem Database

Problem Display
PID: 184415 (R7/5pP1/2K2k2/5P2/4QR2/6P1/8/8 w - - 0 1)

Maillard, Richard

Bulletin Ouvrier des Echecs, 1946

R7/5pP1/2K2k2/5P2/4QR2/6P1/8/8

#2

7 + 2

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rf1?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kxg7!
    • 1.Rf2?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kxg7!
    • 1.Rf3?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kxg7!
    • 1.Qd4+?
      • 1...Ke7
        • 2.Re4#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qd8#
        • 2.g8S#
      • 1...Kg5!
    • 1.Qe7+?
      • 1...Kxe7
        • 2.g8S#
      • 1...Kxg7!
    • 1.Qe8?
      • 1...Kxg7
        • 2.Qh8#
      • 1...Kg5!
  • Keys
    • 1.Qh1!
      • 1...Ke5
        • 2.Qa1#
      • 1...Kg5
        • 2.Qh4#
      • 1...Ke7
        • 2.g8S#
      • 1...Kxg7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XQ(B)::P=S
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XP(F)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB(B)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::P=S
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(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).