MESON Chess Problem Database

Problem Display
PID: 231108 (3R4/3B4/8/N7/4k3/3N4/1P2K3/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

3R4/3B4/8/N7/4k3/3N4/1P2K3/8

#2

6 + 1

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bf5#
      • 2.Bc6#
    • 1...Kd5
      • 2.Bf5#
  • Tries
    • 1.Kd2?
      • 1...Kd4
        • 2.Bf5#
        • 2.Bc6#
      • 1...Kd5
        • 2.Bf5#
      • 1...Kf3!
    • 1.b3?
      • 1...Kd5
        • 2.Bf5#
      • 1...Kd4!
    • 1.b4?
      • 1...Kd5
        • 2.Bf5#
      • 1...Kd4!
  • Keys
    • 1.Kf2!
      • 1...Kxd3
        • 2.Bf5#
      • 1...Kd4
        • 2.Bf5#
        • 2.Bc6#
      • 1...Kd5
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::R(F)+B(E)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::R(F)+B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::R(F)+B(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::R(F)+B(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT,XS(C)::R(F)+B(E),DCHECK
      • K(a);S_FLIGHT::R(F)+B(E)
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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).