MESON Chess Problem Database

Problem Display
PID: 101384 (7K/5B1b/2n2Rp1/p7/2P5/pQqk2N1/2N1Rp2/1n6 w - - 0 1)

Sparke, Arthur M

Good Companions, 1919

7K/5B1b/2n2Rp1/p7/2P5/pQqk2N1/2N1Rp2/1n6

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Rf3#
    • 1...Bg8
      • 2.Bxg6#
    • 1...Sd2
      • 2.Re3#
    • 1...Se5
      • 2.Rd6#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Be4#
      • 1...Qxb3
        • 2.Rf3#
      • 1...Sd2
        • 2.Re3#
      • 1...g5!
    • 1.Qxc3+?
      • 1...Sxc3
        • 2.Rf3#
      • 1...Kxc3!
  • Keys
    • 1.c5!
      • threat
        • 2.Bc4#
      • 1...Qxb3
        • 2.Rf3#
      • 1...Bg8
        • 2.Bxg6#
      • 1...Sd2
        • 2.Re3#
      • 1...Se5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(d);N_PINR(F),N_SPINQ(d),XQ(C)::R(F)
    • B(i);N_GUARD::B(G),XP(h)
    • S(a);SBLOCK::R1(B)
    • S(g);N_PINR(F)::R(F)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • Q(d);N_PINR(F),N_SPINQ(d),XQ(C)::R(F)
        • S(a);SBLOCK::R1(B)
      • Refutation
        • P(h);
    • Try
      • Q(C);CHECK,N_SPINR(F),XQ(d)
      • Vars
        • S(a);SBLOCK,XQ(C)::R(F)
      • Refutation
        • K(e);P-FLIGHT,XQ(C)
  • Actual
    • P(E);
    • Threat
      • B(G)
    • Vars
      • Q(d);N_PINR(F),N_SPINQ(d),XQ(C)::R(F)
      • B(i);N_GUARD::B(G),XP(h)
      • S(a);SBLOCK::R1(B)
      • S(g);N_PINR(F)::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).