MESON Chess Problem Database

Problem Display
PID: 21777 (3BN1n1/4n1R1/K2p2qP/3Pppk1/6p1/8/5Q2/7R w - - 0 1)

Ellerman, Arnoldo

Good Companions (October), 1921

3BN1n1/4n1R1/K2p2qP/3Pppk1/6p1/8/5Q2/7R

#2

8 + 8

3132 The Good Companion Two-Mover 1922
3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Sxh6
      • 2.Bxe7#
    • 1...g3
      • 2.Qxg3#
  • Tries
    • 1.Bxe7+?
      • 1...Sf6
        • 2.Bxf6#
      • 1...Sxe7!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qxf5#
      • 1...Kf6
        • 2.Se4#
      • 1...Sxh6
        • 2.Bxe7#
      • 1...Sf6
        • 2.Sf7#
      • 1...f4
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD,XP(E)::B(G),XS(g)
    • P(a);OGATEB::QAR2(B),XP(a)
  • Tries
    • Try
      • B(G);CHECK,XS(g)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::B(G),XS(h)
      • Refutation
        • S(h);XB(G)
  • Actual
    • S(H);P_SPINS(H),XP(e)
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • K(d);N_PINS(H),N_SPINQ(f),P_SPINP(c),S_FLIGHT::S(H)
      • S(h);N_GUARD,XP(E)::B(G),XS(g)
      • S(h);N_PINS(H),N_SPINS(g),SBLOCK::S(H)
      • P(c);SBLOCK::QAB1(B)
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).