MESON Chess Problem Database

Problem Display
PID: 99661 (6R1/8/8/6pk/3Q4/8/6p1/6Kb w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1925

6R1/8/8/6pk/3Q4/8/6p1/6Kb

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qh8#
    • 1...g4
      • 2.Qh8#
  • Tries
    • 1.Rxg5+?
      • 1...Kh6
        • 2.Qg7#
        • 2.Qh4#
      • 1...Kxg5!
    • 1.Rg6?
      • 1...g4
        • 2.Qxg4#
      • 1...Kxg6!
    • 1.Qf4?
      • threat
        • 2.Qxg5#
      • 1...Kh6
        • 2.Qh2#
      • 1...g4
        • 2.Qh2#
        • 2.Qg5#
      • 1...gxf4!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qh3#
      • 1...Kxg4!
    • 1.Qd7?
      • threat
        • 2.Qh3#
      • 1...Kh6
        • 2.Qh3#
      • 1...g4
        • 2.Qh7#
      • 1...Kh4!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Rh8#
      • 1...Kh6
        • 2.Qg6#
      • 1...g4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAR2(B)
    • P(c);::QAR(B)
  • Tries
    • Try
      • R(C);CHECK,XP(c)
      • Refutation
        • K(d);P-FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(c)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::QAR(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(B)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(d);P-FLIGHT::QAR(B)
        • P(c);::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • R(C)
    • Vars
      • K(d);P-FLIGHT::QAR1(B)
      • P(c);::QAR2(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).