MESON Chess Problem Database

Problem Display
PID: 195018 (8/8/5p2/P2P3Q/R2pk3/8/2P3N1/2K5 w - - 0 1)

Todd, William R

Pittsburgh Gazette-Times, 1918

8/8/5p2/P2P3Q/R2pk3/8/2P3N1/2K5

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1?
      • 1...d3
        • 2.Ra4#
      • 1...f5!
    • 1.Ra2?
      • 1...d3
        • 2.Ra4#
      • 1...f5!
    • 1.Ra3?
      • 1...d3
        • 2.Ra4#
      • 1...f5!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxd5!
    • 1.c3?
      • threat
        • 2.Rxd4#
      • 1...Kd3
        • 2.Qf3#
      • 1...f5!
  • Keys
    • 1.c4!
      • 1...Kd3
        • 2.Qf3#
      • 1...f5
        • 2.Qe2#
      • 1...d3
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(D)
      • Refutation
        • P(c);
    • Try
      • R(D);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(D)
      • Refutation
        • P(c);
    • Try
      • R(D);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(D)
      • Refutation
        • P(c);
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(F)
    • Try
      • P(B);
      • Threat
        • R1(D),XP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR2(G)
      • Refutation
        • P(c);
  • Actual
    • P(B);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAR2(G)
      • P(c);SBLOCK::QAR2(G)
      • P(a);SBLOCK::R(D)+P(B)
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).