MESON Chess Problem Database

Problem Display
PID: 184331 (8/4KP2/2p2pr1/2r1k3/1N1Rb2N/p4q2/3QpP1n/8 w - - 0 1)

Feldbrugge, Johannes Hermanus Bernardus

Tijdschrift vd KNSB, 1942

8/4KP2/2p2pr1/2r1k3/1N1Rb2N/p4q2/3QpP1n/8

#2

7 + 10

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.f4#
    • 1...Qg2
      • 2.f4#
    • 1...Qh5
      • 2.f4#
    • 1...Qb3
      • 2.f4#
    • 1...Qc3
      • 2.f4#
    • 1...Qh3
      • 2.f4#
    • 1...Rd5
      • 2.Sxc6#
    • 1...f5
      • 2.Sxg6#
  • Tries
    • 1.Rxe4+?
      • 1...Qxe4
        • 2.Qd6#
      • 1...Kxe4!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qd6#
      • 1...Qd3
        • 2.f4#
      • 1...Rd5
        • 2.Sxc6#
      • 1...Bd3
        • 2.Qc3#
      • 1...Bd5
        • 2.Qd4#
      • 1...f5
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(d);OGATE::P(B)
    • R(f);N_GUARD,S_CUTB(e)::S(C),XP(h)
    • P(i);SBLOCK,S_CUTB(e)::S(E),XR(j)
  • Tries
    • Try
      • R(D);CHECK,XB(e)
      • Vars
        • Q(d);SBLOCK,XR(D)::QAB1(A)
      • Refutation
        • K(g);P-FLIGHT,XR(D)
  • Actual
    • R(D);
    • Threat
      • QAB1(A)
    • Vars
      • Q(d);OGATE::P(B)
      • R(f);N_GUARD,S_CUTB(e)::S(C),XP(h)
      • B(e);S_CUTQ(d)::QAB(A)
      • B(e);::QAB1(A)
      • P(i);SBLOCK,S_CUTB(e)::S(E),XR(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).