MESON Chess Problem Database

Problem Display
PID: 63449 (2R5/4p3/4k3/1p5K/1P2P3/2Q5/6N1/4R3 w - - 0 1)

Powis, RD

Chess, 1945

2R5/4p3/4k3/1p5K/1P2P3/2Q5/6N1/4R3

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qc6#
  • Tries
    • 1.Kg6?
      • 1...Kd7
        • 2.Qc6#
      • 1...Kd6!
    • 1.Sf4+?
      • 1...Kd6
        • 2.Rd1#
        • 2.Rd8#
        • 2.Qd4#
        • 2.Qc7#
      • 1...Kd7
        • 2.Rd1#
        • 2.Qc6#
        • 2.Qc7#
      • 1...Kf7!
    • 1.Rf1?
      • 1...Kd7
        • 2.Qc6#
      • 1...Kd6!
    • 1.Qc6+?
      • 1...Kf7
        • 2.Qg6#
      • 1...Ke5!
  • Keys
    • 1.e5!
      • 1...Kd5
        • 2.Sf4#
      • 1...Kf5
        • 2.Qh3#
      • 1...Kd7
        • 2.Qc6#
      • 1...Kf7
        • 2.e6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(E);
    • Vars
      • K(b);S_FLIGHT::S(B)
      • K(b);S_FLIGHT::QAB(C)
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);OGATE,S_FLIGHT::P(E)
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).