MESON Chess Problem Database

Problem Display
PID: 227834 (8/8/8/3p4/3Bk2p/1K5P/5Q2/8 w - - 0 1)

Harcz, Karoly

Uj Nemezdek, 1926

8/8/8/3p4/3Bk2p/1K5P/5Q2/8

#2

4 + 3

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe3#
  • Tries
    • 1.Bc3?
      • 1...Kd3
        • 2.Qf3#
      • 1...d4!
    • 1.Qxh4+?
      • 1...Kf3
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kd3!
    • 1.Qe2+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kxd4!
    • 1.Qf4+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxf4!
  • Keys
    • 1.Qg1!
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3
        • 2.Qg4#
      • 1...Kf4
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#

Anticipated by 2160(0000), 115455(1911), 17214(1925-1926), 5988(1926)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);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).