MESON Chess Problem Database

Problem Display
PID: 156267 (8/6K1/4pN2/1p2k3/1P1r2P1/2Q1N3/8/7b w - - 0 1)

Drese, Gerardus Hendrikus

1st HM., Het Schaakleven, 1932-1933

8/6K1/4pN2/1p2k3/1P1r2P1/2Q1N3/8/7b

#2

6 + 5

1577 Jaarboek 1933

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc5#
    • 1...Bd5
      • 2.Qc7#
  • Tries
    • 1.Sg2?
      • 1...Kd6
        • 2.Qc5#
      • 1...Bxg2!
    • 1.Sc4+?
      • 1...Kf4
        • 2.Qe3#
      • 1...bxc4!
    • 1.Sed5?
      • threat
        • 2.Qc7#
      • 1...Kd6
        • 2.Qc7#
      • 1...exd5!
    • 1.Sf5?
      • threat
        • 2.Qxd4#
      • 1...Kf4
        • 2.Qe3#
      • 1...Be4
        • 2.Qg3#
      • 1...exf5!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qxd4#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qc5#
      • 1...Be4
        • 2.Qg3#
      • 1...Bd5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
    • B(a);::QAB(A)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);CHECK
      • Vars
        • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);XS(B)
    • Try
      • S(B);
      • Threat
        • QAB(A)
      • Vars
        • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
      • Refutation
        • P(e);XS(B)
    • Try
      • S(B);
      • Threat
        • QAB1(A),XR(b)
      • Vars
        • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
        • B(a);::QAB(A)
      • Refutation
        • P(e);XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB1(A),XR(b)
    • Vars
      • K(d);N_SPINR(b),S_FLIGHT::QAB1(A)
      • B(a);::QAB(A)
HTML5 logo

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).