MESON Chess Problem Database

Problem Display
PID: 245133 (2B5/b3K3/2kP4/2p5/2Q5/8/8/8 w - - 0 1)

Labai, Zoltan

Smena (Moscow), 2000

2B5/b3K3/2kP4/2p5/2Q5/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Qa6#
  • Tries
    • 1.Ba6?
      • 1...Kb6
        • 2.Qb5#
      • 1...Bb6
        • 2.Qe4#
      • 1...Bb8!
    • 1.Bb7+?
      • 1...Kb6
        • 2.Qa6#
      • 1...Kxb7!
    • 1.Bd7+?
      • 1...Kb6
        • 2.Qb5#
      • 1...Kb7!
    • 1.Qa6+?
      • 1...Bb6
        • 2.Bb7#
      • 1...Kd5!
    • 1.Qa4+?
      • 1...Kb6
        • 2.Qa6#
      • 1...Kd5!
  • Keys
    • 1.Ke6!
      • 1...Kb6
        • 2.Qa6#
      • 1...Bb6
        • 2.Qa4#
      • 1...Bb8
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
        • B(c);SBLOCK::QAB(A)
      • Refutation
        • B(c);
    • Try
      • B(D);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • B(c);P_SPINB(c)::B(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • B(c);SBLOCK::QAB(A)
      • B(c);N_GUARD::QAR2(A)
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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).