MESON Chess Problem Database

Problem Display
PID: 203004 (4N3/4p2K/1p1r3p/pQ6/rn2k3/8/1BP1B1Nb/7n w - - 0 1)

Ellerman, Arnoldo

Western Daily Mercury, 1920

(First published on Fri May 14 1920)

4N3/4p2K/1p1r3p/pQ6/rn2k3/8/1BP1B1Nb/7n

#2

7 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Sg3
      • 2.Qe5#
    • 1...Sd5
      • 2.Qd3#
    • 1...e5
      • 2.Sxd6#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qg4#
      • 1...Rd4!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Qf5#
      • 1...Rd5
        • 2.Qe2#
      • 1...Rf6
        • 2.Qc4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sg3
        • 2.Qe5#
      • 1...Sd5
        • 2.Qd3#
      • 1...e5
        • 2.Sxd6#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD::QAR1(E)
    • B(b);N_GUARD::QAR1(E),XB(b)
    • S(a);S_CUTB(b)::QAR1(E)
    • S(d);N_GUARD,S_CUTR(h)::QAB1(E)
    • P(j);N_GUARD,S_CUTB(b)::S(G),XR(h)
    • P(j);N_GUARD,S_CUTR(h)::S(G)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • B(C);
    • Threat
      • QAB1(E)
    • Vars
      • R(h);SBLOCK::QAR2(E)
      • R(h);N_GUARD::QAR2(E)
      • B(b);N_GUARD::QAR1(E),XB(b)
      • S(a);S_CUTB(b)::QAR1(E)
      • S(d);N_GUARD,S_CUTR(h)::QAB1(E)
      • P(j);N_GUARD,S_CUTB(b)::S(G),XR(h)
      • P(j);N_GUARD,S_CUTR(h)::S(G)
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).