MESON Chess Problem Database

Problem Display
PID: 21682 (4bB2/2p2rRp/P1k5/2PR4/2P3B1/1r2b2Q/5pK1/5n2 w - - 0 1)

Ellerman, Arnoldo

4th Prize, Good Companions (July), 1920

4bB2/2p2rRp/P1k5/2PR4/2P3B1/1r2b2Q/5pK1/5n2

#2

9 + 9

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Tries
    • 1.Rg6+?
      • 1...Rf6
        • 2.Rxf6#
      • 1...hxg6!
    • 1.Qh6+?
      • 1...Rf6
        • 2.Qxf6#
      • 1...Bxh6!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qe6#
      • 1...Rxg7+
        • 2.Rg5#
      • 1...Bxc5
        • 2.Rd6#
      • 1...Rf5
        • 2.Rxf5#
      • 1...Rf6
        • 2.Rf5#
      • 1...Rd7
        • 2.Rdxd7#
      • 1...Re7
        • 2.Re5#
      • 1...Bf4
        • 2.Rd3#
      • 1...Bd7
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::R(H),XR(g)
      • Refutation
        • P(h);XR(H)
    • Try
      • Q(B);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAR(B),XR(g)
      • Refutation
        • B(d);XQ(B)
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • R(g);CHECK,N_GUARD,XR(H)::B(D)+R(F)
      • B(d);SBLOCK,XP(E)::B(D)+R(F),DCHECK
      • R(g);::B(D)+R(F),XR(g)
      • R(g);::B(D)+R(F)
      • R(g);N_GUARD::B(D)+R(F),XR(g)
      • R(g);N_GUARD::B(D)+R(F)
      • B(d);S_CUTR(g)::B(D)+R(F)
      • B(i);SBLOCK::B(D)+R(F)
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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).