MESON Chess Problem Database

Problem Display
PID: 227766 (8/8/1p6/nQ6/8/k1p5/2K5/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/8/1p6/nQ6/8/k1p5/2K5/8

#2

2 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Qa4#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sc4
      • 2.Qb3#
    • 1...Sc6
      • 2.Qb3#
    • 1...Sb7
      • 2.Qb3#
  • Tries
    • 1.Qb4+?
      • 1...Ka2
        • 2.Qa4#
      • 1...Kxb4!
    • 1.Qxb6?
      • threat
        • 2.Qxa5#
      • 1...Ka2
        • 2.Qxa5#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#
      • 1...Ka4!
  • Keys
    • 1.Kxc3!
      • 1...Ka2
        • 2.Qb2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • S(c);N_GUARD::QAR1(B),XS(c)
    • S(c);N_GUARD::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);XP(d)
      • Threat
        • QAR2(B),XS(c)
      • Vars
        • K(a);P-FLIGHT::QAR(B),XS(c)
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT,XP(b)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • S(c);N_GUARD::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).