MESON Chess Problem Database

Problem Display
PID: 21176 (2K5/2P5/B1p5/4N2R/4k1pQ/p1pRBNnb/1b6/3n2r1 w - - 0 1)

Sparke, Arthur M

2nd Prize, Good Companions (February), 1917

2K5/2P5/B1p5/4N2R/4k1pQ/p1pRBNnb/1b6/3n2r1

#2

9 + 10

15 British Chess Magazine 1917
3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxg4#
    • 1...Bg2
      • 2.Qxg4#
    • 1...Sxe3
      • 2.Rd4#
    • 1...c2
      • 2.Sd2#
    • 1...c5
      • 2.Bb7#
  • Tries
    • 1.Bb7?
      • threat
        • 2.Bxc6#
      • 1...Sxe3
        • 2.Rd4#
      • 1...Sxh5!
    • 1.Qg5?
      • threat
        • 2.Rd4#
        • 2.Qf4#
      • 1...Sxe3
        • 2.Rd4#
        • 2.Qxe3#
      • 1...Sxh5
        • 2.Rd4#
        • 2.Qg6#
      • 1...Se2
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sf5
        • 2.Qf4#
        • 2.Qxf5#
      • 1...c2
        • 2.Sd2#
        • 2.Qf4#
      • 1...c5
        • 2.Bb7#
        • 2.Qf4#
      • 1...gxf3+!
    • 1.Qf6?
      • threat
        • 2.Sg5#
        • 2.Qf4#
        • 2.Qxc6#
      • 1...Sxe3
        • 2.Sg5#
        • 2.Rd4#
      • 1...Sxh5
        • 2.Sg5#
        • 2.Qg6#
      • 1...Se2
        • 2.Sg5#
        • 2.Qf5#
        • 2.Qxc6#
        • 2.Qg6#
      • 1...Sf5
        • 2.Sg5#
        • 2.Qxf5#
        • 2.Qxc6#
      • 1...c5
        • 2.Sg5#
        • 2.Bb7#
        • 2.Qf4#
        • 2.Qc6#
      • 1...gxf3+!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qb4#
      • 1...gxf3+
        • 2.Sg4#
      • 1...Sxe3
        • 2.Rd4#
      • 1...Sxh5
        • 2.Qh7#
      • 1...Se2
        • 2.Qh7#
      • 1...Sf5
        • 2.Sg5#
      • 1...c2
        • 2.Sd2#
      • 1...c5
        • 2.Bb7#

There are these versions: 193993

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::QAR2(D),XP(i)
    • S(a);SBLOCK,XB(B)::R1(A)
    • P(e);N_GUARD::S(C)
    • P(j);OGATEB::B(G)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(G),XP(j)
      • Vars
        • S(a);SBLOCK,XB(B)::R1(A)
      • Refutation
        • S(f);XR(F)
    • Try
      • Q(D);N_PINP(i)
      • Threat
        • DUALS(2)
      • Refutation
        • P(i);CHECK,XS(C)
    • Try
      • Q(D);N_PINP(i)
      • Threat
        • DUALS(3)
      • Refutation
        • P(i);CHECK,XS(C)
  • Actual
    • Q(D);N_PINP(i)
    • Threat
      • QAR(D)
    • Vars
      • P(i);CHECK,SBLOCK,XS(C)::QAR(D)+S(E)
      • S(a);SBLOCK,XB(B)::R1(A)
      • S(f);N_GUARD,XR(F)::QAB(D)
      • S(f);N_GUARD::QAB(D)
      • S(f);SBLOCK::S(C)
      • P(e);N_GUARD::S(C)
      • P(j);OGATEB::B(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).