MESON Chess Problem Database

Problem Display
PID: 227651 (8/6K1/8/2N3k1/8/3p2P1/3P4/3Q4 w - - 0 1)

Ballo, Gyorgy

Nepszava, 1926

8/6K1/8/2N3k1/8/3p2P1/3P4/3Q4

#2

5 + 2

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qh5#
  • Tries
    • 1.Kf7?
      • 1...Kf5
        • 2.Qh5#
      • 1...Kh6!
    • 1.Qe2?
      • 1...Kf5
        • 2.Qh5#
      • 1...dxe2!
    • 1.Qf1?
      • 1...Kh5
        • 2.Qf5#
      • 1...Kg4!
    • 1.Qh1?
      • 1...Kf5
        • 2.Qh5#
      • 1...Kg4!
  • Keys
    • 1.Qa4!
      • 1...Kf5
        • 2.Qf4#
      • 1...Kh5
        • 2.Qh4#

Anticipated by 206698(1925)

This anticipates 77626(1947), 211353(1986)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);XQ(A)
    • 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
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
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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).