MESON Chess Problem Database

Problem Display
PID: 227502 (8/5N2/8/8/3p1k2/3Qb2K/4P3/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/5N2/8/8/3p1k2/3Qb2K/4P3/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qf3#
    • 1...Bg1
      • 2.Qf3#
    • 1...Bd2
      • 2.Qf3#
    • 1...Bf2
      • 2.Qf3#
  • Tries
    • 1.Kg2?
      • 1...Bc1
        • 2.Qf3#
      • 1...Bg1
        • 2.Qf3#
      • 1...Bd2
        • 2.Qf3#
      • 1...Bf2
        • 2.Qf3#
      • 1...Kg4!
    • 1.Kh4?
      • 1...Bc1
        • 2.Qf3#
      • 1...Bg1
        • 2.Qf3#
      • 1...Bd2
        • 2.Qf3#
      • 1...Bf2+!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::QAR1(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • B(a);OGATE::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • B(a);OGATE::QAR1(B)
      • Refutation
        • B(a);CHECK
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);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).