MESON Chess Problem Database

Problem Display
PID: 198896 (8/7B/2K1Np2/3PkpbR/5p1n/6BQ/8/8 w - - 0 1)

Vesz, Tibor

Bekes, 1921

8/7B/2K1Np2/3PkpbR/5p1n/6BQ/8/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxf5#
    • 1...Sf3
      • 2.Qxf5#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Qe3#
      • 1...Sg2
        • 2.Qxf5#
      • 1...Sf3
        • 2.Qxf5#
      • 1...Ke4!
    • 1.Bxf4+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Bxf4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe2#
      • 1...Ke4
        • 2.Qe2#
      • 1...fxg3
        • 2.Qd4#
      • 1...fxg4
        • 2.Bxf4#
      • 1...Sg2
        • 2.Qxf5#
      • 1...Sf3
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(B),XP(d)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR2(B)
      • Vars
        • S(b);N_GUARD::QAR1(B),XP(d)
      • Refutation
        • K(c);N_SPINP(a),P-FLIGHT,P_SPINP(d)
    • Try
      • B(A);CHECK,XP(a)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::QAR1(B)
      • Refutation
        • B(e);P_SPINP(d),XB(A)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(c);P-FLIGHT::QAR2(B)
      • P(a);N_SPINP(a),OGATE,XB(A)::QAB1(B)
      • P(d);P_SPINB(e),XQ(B)::B(A),XP(a)
      • S(b);N_GUARD::QAR1(B),XP(d)
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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).