MESON Chess Problem Database

Problem Display
PID: 202487 (8/5p2/N4P2/Q2PnKn1/2pk1PRb/8/4Pr2/5NB1 w - - 0 1)

ten Cate, Pieter

Oprechte Haarlemsche Courant, 1923

8/5p2/N4P2/Q2PnKn1/2pk1PRb/8/4Pr2/5NB1

#2

10 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.e3#
    • 1...Sef3
      • 2.fxg5#
    • 1...Sxg4
      • 2.Qd2#
    • 1...Sc6
      • 2.Qd2#
    • 1...Sg6
      • 2.Qd2#
    • 1...Sd7
      • 2.Qd2#
    • 1...Sgf3
      • 2.fxe5#
    • 1...c3
      • 2.Qc5#
  • Tries
    • 1.Qb6+?
      • 1...Kxd5
        • 2.Se3#
        • 2.Sb4#
        • 2.Sc7#
        • 2.Qc5#
      • 1...Kc3!
  • Keys
    • 1.d6!
      • threat
        • 2.Qxe5#
      • 1...Sxg4
        • 2.Qd2#
      • 1...c3
        • 2.Qc5#
      • 1...Sd3
        • 2.e3#
      • 1...Sef3
        • 2.fxg5#
      • 1...Sc6
        • 2.Qd2#
      • 1...Sg6
        • 2.Qd2#
      • 1...Sd7
        • 2.Qd2#
      • 1...Sgf3
        • 2.fxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::P(C)
    • S(e);N_PINP(D)::R(E)+P(D),XS(f)
    • S(e);N_GUARD,XR(E)::QAR2(F)
    • S(e);N_GUARD::QAR2(F)
    • S(f);N_PINP(D)::R(E)+P(D),XS(e)
    • P(b);::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT
  • Actual
    • P(G);
    • Threat
      • QAB1(F),XS(e)
    • Vars
      • S(e);N_GUARD,XR(E)::QAR2(F)
      • P(b);::QAB1(F)
      • S(e);SBLOCK::P(C)
      • S(e);N_PINP(D)::R(E)+P(D),XS(f)
      • S(e);N_GUARD::QAR2(F)
      • S(f);N_PINP(D)::R(E)+P(D),XS(e)
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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).