MESON Chess Problem Database

Problem Display
PID: 260776 (6K1/1b3R2/8/2P1k1p1/2Pr2B1/3P4/1Q6/8 w - - 0 1)

Buhler, Luigi

Neue Zurcher Zeitung, 1974

6K1/1b3R2/8/2P1k1p1/2Pr2B1/3P4/1Q6/8

#2

7 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qh2#
    • 1...Bd5
      • 2.Qb8#
  • Tries
    • 1.Bc8?
      • threat
        • 2.Rf5#
      • 1...Be4
        • 2.Qh2#
      • 1...Bd5
        • 2.Qb8#
      • 1...Bxc8!
    • 1.Re7+?
      • 1...Kf6
        • 2.Re6#
      • 1...Kf4!
    • 1.Qe2+?
      • 1...Be4
        • 2.Qh2#
      • 1...Re4!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Rf5#
      • 1...Be4
        • 2.Qh2#
      • 1...Bd5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);::QAB(A)
    • B(d);OGATE,P_PINR(F)::QAB(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(F)
      • Vars
        • B(d);::QAB(A)
        • B(d);OGATE,P_PINR(F)::QAB(A)
      • Refutation
        • B(d);XB(D)
    • Try
      • R(F);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R1(F)
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINR(a)
      • Vars
        • B(d);P_SPINB(d),S_CUTR(a)::QAB(A)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • B(D);
    • Threat
      • R1(F)
    • Vars
      • B(d);::QAB(A)
      • B(d);OGATE,P_PINR(F)::QAB(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).