MESON Chess Problem Database

Problem Display
PID: 209315 (8/8/2K5/2P5/k7/P2Q4/8/8 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1984

8/8/2K5/2P5/k7/P2Q4/8/8

#2

4 + 1

3713 Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qb5#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxa3!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxa3!
    • 1.Qb3+?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxb3!
  • Keys
    • 1.Kb7!
      • 1...Ka5
        • 2.Qa6#

Anticipated by 78554(1925)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::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).