MESON Chess Problem Database

Problem Display
PID: 64889 (nb2q1r1/2nbp3/p1p4B/K1Q3r1/5kpN/3R3p/3N4/8 w - - 0 1)

Ellerman, Arnoldo

Good Companions (May), 1922

nb2q1r1/2nbp3/p1p4B/K1Q3r1/5kpN/3R3p/3N4/8

#2

6 + 13

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Bxg5#
      • 2.Qxg5#
    • 1...Rh8
      • 2.Bxg5#
      • 2.Qxg5#
    • 1...Bf5
      • 2.Qe3#
      • 2.Qxf5#
    • 1...Sb5
      • 2.Qe3#
    • 1...Sd5
      • 2.Qd4#
    • 1...Se6
      • 2.Qf5#
    • 1...h2
      • 2.Sg2#
    • 1...e5
      • 2.Qf2#
      • 2.Qe3#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Rd4#
      • 1...Ke4
        • 2.Rd4#
      • 1...Sd5
        • 2.Qd4#
      • 1...Bf5
        • 2.Qe3#
        • 2.Qxf5#
      • 1...Sb5
        • 2.Qe3#
      • 1...Se6
        • 2.Qf5#
      • 1...e5
        • 2.Qe3#
      • 1...Qg6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Rd4#
      • 1...g3
        • 2.Rd4#
      • 1...Sb5
        • 2.Qe3#
      • 1...Sd5
        • 2.Qd4#
      • 1...Se6
        • 2.Qf5#
      • 1...e5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(g);N_PINQ(E)::QAB1(E)
    • S(g);N_PINQ(E)::QAR2(E)
    • S(g);S_CUTB(h)::QAR1(E)
    • P(a);N_GUARD::S(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • R(B)
      • Vars
        • K(b);N_SPINR(d),P-FLIGHT::R1(B)
        • S(g);N_PINQ(E)::QAR2(E)
        • S(g);N_PINQ(E)::QAB1(E)
        • S(g);S_CUTB(h)::QAR1(E)
        • P(i);N_PINQ(E)::QAB1(E)
      • Refutation
        • Q(l);
  • Actual
    • S(A);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);N_SPINR(d),P-FLIGHT::R1(B)
      • P(c);SBLOCK::R(B)
      • S(g);N_PINQ(E)::QAB1(E)
      • S(g);N_PINQ(E)::QAR2(E)
      • S(g);S_CUTB(h)::QAR1(E)
      • P(i);N_PINQ(E)::QAB1(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).