MESON Chess Problem Database

Problem Display
PID: 203438 (2Q5/5n2/B7/8/4NNr1/4pp2/P3qB2/R1K2k2 w - - 0 1)

ten Cate, Pieter

Tijdschrift vd NSB, 1924

2Q5/5n2/B7/8/4NNr1/4pp2/P3qB2/R1K2k2

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Kb2#
    • 1...Qc4+
      • 2.Kb2#
    • 1...Qb5
      • 2.Kc2#
    • 1...Qxa6
      • 2.Kb2#
      • 2.Kc2#
    • 1...Rxf4
      • 2.Qh3#
  • Tries
    • 1.Qxg4?
      • threat
        • 2.Qh3#
        • 2.Qg1#
      • 1...Qc4+
        • 2.Kb2#
      • 1...Sg5
        • 2.Qg1#
      • 1...exf2!
    • 1.Qd7?
      • threat
        • 2.Qd1#
      • 1...Qc4+
        • 2.Kb2#
      • 1...Rxf4
        • 2.Qh3#
      • 1...Qd3
        • 2.Kb2#
      • 1...Sd6!
    • 1.Qc2?
      • threat
        • 2.Kb2#
        • 2.Qd1#
      • 1...Qc4
        • 2.Kb2#
      • 1...Qb5
        • 2.Qd1#
      • 1...Rxf4!
  • Keys
    • 1.Kb1!
      • threat
        • 2.Qc1#
      • 1...Qd3+
        • 2.Kb2#
      • 1...Qb5+
        • 2.Kc2#
      • 1...Rxf4
        • 2.Qh3#
      • 1...Qc4
        • 2.Kb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(b);::R(A)+K(B)
    • Q(b);CHECK::R(A)+K(B)
    • R(e);OGATE,XS(F)::QAB(H)
  • Tries
    • Try
      • Q(H);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK::R(A)+K(B)
        • S(f);::QAR1(H)
      • Refutation
        • P(c);XB(D)
    • Try
      • Q(H);
      • Threat
        • QAR2(H)
      • Vars
        • Q(b);CHECK::R(A)+K(B)
        • R(e);OGATE,XS(F)::QAB(H)
        • Q(b);::R(A)+K(B)
      • Refutation
        • S(f);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);P_PINQ(H)::R(A)+K(B)
        • Q(b);::QAR2(H)
      • Refutation
        • R(e);XS(F)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAR(H)
    • Vars
      • Q(b);CHECK::R(A)+K(B)
      • R(e);OGATE,XS(F)::QAB(H)
      • Q(b);::R(A)+K(B)
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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).