MESON Chess Problem Database

Problem Display
PID: 219855 (5B1K/3p3Q/4kp2/5R2/8/8/8/8 w - - 0 1)

Riczu, Lajos

Land og Folk, 1974

5B1K/3p3Q/4kp2/5R2/8/8/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rf4?
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...d5
        • 2.Qe7#
      • 1...d6!
    • 1.Ra5?
      • threat
        • 2.Qg8#
        • 2.Qe7#
      • 1...f5
        • 2.Qxf5#
        • 2.Qg6#
        • 2.Qe7#
      • 1...d6
        • 2.Qe7#
      • 1...d5!
    • 1.Rb5?
      • threat
        • 2.Qg8#
        • 2.Qe7#
      • 1...f5
        • 2.Qxf5#
        • 2.Qg6#
        • 2.Qe7#
      • 1...d6
        • 2.Qe7#
      • 1...d5!
    • 1.Rc5?
      • threat
        • 2.Qg8#
        • 2.Qe7#
      • 1...f5
        • 2.Qxf5#
        • 2.Qg6#
        • 2.Qe7#
      • 1...d6
        • 2.Qe7#
      • 1...d5!
    • 1.Rg5?
      • threat
        • 2.Qg8#
        • 2.Qe7#
      • 1...f5
        • 2.Qxf5#
      • 1...d6
        • 2.Qe7#
      • 1...d5
        • 2.Qe7#
      • 1...fxg5!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qg8#
        • 2.Qe7#
      • 1...f5
        • 2.Qxf5#
      • 1...d6
        • 2.Qe7#
      • 1...d5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • P(b);::QAB1(B),XP(b)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(B),XP(b)
        • P(c);::QAR1(B)
      • Refutation
        • P(b);XR(A)
  • Actual
    • R(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);::QAB1(B),XP(b)
      • P(c);::QAR1(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).