MESON Chess Problem Database

Problem Display
PID: 173589 (8/8/8/8/4p3/4K1Q1/6b1/5Nk1 w - - 0 1)

Boros, Sandor

Magyar Sakkvilag, 1926

8/8/8/8/4p3/4K1Q1/6b1/5Nk1

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf1
      • 2.Qf2#
    • 1...Kh1
      • 2.Qh2#
  • Tries
    • 1.Kd2?
      • 1...Kxf1
        • 2.Qe1#
      • 1...Kh1
        • 2.Qh2#
      • 1...e3+!
    • 1.Qg4?
      • 1...Kxf1
        • 2.Qd1#
      • 1...Kh1!
    • 1.Qg7?
      • 1...Kxf1
        • 2.Qa1#
      • 1...Kh1!
  • Keys
    • 1.Ke2!
      • threat
        • 2.Qh2#
      • 1...Kh1
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
    • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(C);
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR2(C)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR(C)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
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).