MESON Chess Problem Database

Problem Display
PID: 218850 (2k5/4p3/K3P3/Q7/8/8/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

The Problemist, 1987

2k5/4p3/K3P3/Q7/8/8/8/8

#2

3 + 2

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Qd8#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kb8!
    • 1.Qd2?
      • 1...Kb8
        • 2.Qd8#
      • 1...Kc7!
    • 1.Qb4?
      • 1...Kd8
        • 2.Qb8#
      • 1...Kc7!
    • 1.Qb5?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qb8#
      • 1...Kc7!
    • 1.Qd5?
      • 1...Kb8
        • 2.Qb7#
        • 2.Qd8#
      • 1...Kc7!
  • Keys
    • 1.Qe5!
      • 1...Kd8
        • 2.Qb8#

Anticipated by 227542(1926), 227677(1926)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
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).