MESON Chess Problem Database

Problem Display
PID: 227772 (K7/1BkpQ3/8/8/8/1N6/8/8 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1926

K7/1BkpQ3/8/8/8/1N6/8/8

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Qc5#
  • Tries
    • 1.Bc6?
      • 1...Kxc6
        • 2.Qc5#
      • 1...Kc8
        • 2.Qxd7#
      • 1...Kb6!
    • 1.Bc8?
      • 1...Kb6
        • 2.Qc5#
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxc8!
    • 1.Qxd7+?
      • 1...Kb6
        • 2.Qc6#
      • 1...Kxd7!
  • Keys
    • 1.Ba6!
      • 1...Kb6
        • 2.Qd6#
      • 1...Kc6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XB(B)::QAR1(C)
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(C)
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(B)
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • B(B);
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR2(C)
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
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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).