MESON Chess Problem Database

Problem Display
PID: 21215 (2B5/1K1N3p/RQNk3r/p2p4/1b1p1n2/p7/1qrp4/8 w - - 0 1)

Ellerman, Arnoldo

Good Companions (July), 1917

2B5/1K1N3p/RQNk3r/p2p4/1b1p1n2/p7/1qrp4/8

#2

6 + 12

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Qc7#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qe7#
      • 1...Bc3+
        • 2.Sb4#
      • 1...Bc5+
        • 2.Sb6#
      • 1...Ke6
        • 2.Sde5#
      • 1...Rxc6
        • 2.Rxc6#
      • 1...Re6
        • 2.Qc7#
      • 1...Sg6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(k);SBLOCK::QAB1(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(e);CHECK,S_CUTR(b)::R(A)+S(C)
      • B(e);CHECK,SBLOCK::QAR(B)+S(E)
      • K(j);P-FLIGHT::B(F)+S(E)
      • R(b);OGATE,P_SPINR(b),XS(C)::R1(A),XR(b)
      • R(k);SBLOCK::QAB1(B)
      • S(g);N_GUARD,S_CUTR(k)::QAR2(B)
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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).