MESON Chess Problem Database

Problem Display
PID: 245067 (6B1/N7/2p1q2r/2P3R1/Prk3Np/npP4K/1P2P3/6B1 w - - 0 1)

Eerkes, Allard Pieter

De Maasbode, 1951

6B1/N7/2p1q2r/2P3R1/Prk3Np/npP4K/1P2P3/6B1

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Se5#
    • 1...Qf7
      • 2.Se3#
    • 1...Qxg8
      • 2.Se3#
    • 1...Rh5
      • 2.Bxe6#
    • 1...Rh7
      • 2.Bxe6#
    • 1...Rh8
      • 2.Bxe6#
  • Tries
    • 1.Kh2?
      • threat
        • 2.Se3#
      • 1...Qd5
        • 2.Se5#
      • 1...Sc2!
    • 1.Rf5?
      • threat
        • 2.Se3#
      • 1...Qd5
        • 2.Se5#
        • 2.Rf4#
      • 1...Sc2!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Sd6#
      • 1...Qxg8
        • 2.Se3#
      • 1...Qd5
        • 2.Se5#
      • 1...Qf7
        • 2.Se3#
      • 1...Sb5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_PINS(G)::S(G)
    • Q(g);N_PINS(G),N_SPINQ(g),XB(K)::S(G)
    • R(h);N_GUARD::B(K),XQ(g)
  • Tries
    • Try
      • K(E);N_SPINS(G),P-FLIGHT
      • Threat
        • S(G)
      • Vars
        • Q(g);::S(G)
      • Refutation
        • S(a);
    • Try
      • R(I);N_SPINS(G)
      • Threat
        • S(G)
      • Refutation
        • S(a);
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • Q(g);N_PINS(G),N_SPINQ(g),XB(K)::S(G)
      • Q(g);N_PINS(G)::S(G)
      • S(a);S_CUTR(c)::S(J)
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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).