MESON Chess Problem Database

Problem Display
PID: 153643 (8/q2rpp1K/8/1Pp3bB/b3P2p/B6Q/R1Nk1NPR/r7 w - - 0 1)

Sparke, Arthur M

Good Companions (April), 1916

8/q2rpp1K/8/1Pp3bB/b3P2p/B6Q/R1Nk1NPR/r7

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxd3#
    • 1...Rb7
      • 2.Qd3#
    • 1...Rc7
      • 2.Qd3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Bf6
      • 2.Qe3#
  • Tries
    • 1.Sxa1+?
      • 1...Ke1
        • 2.Rh1#
      • 1...Bc2!
    • 1.Qxd7+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Qxd7!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Qc3#
      • 1...Rxd1
        • 2.g4#
      • 1...Be3
        • 2.Qxe3#
      • 1...Qa5
        • 2.Qxd7#
      • 1...Rd3
        • 2.g3#
      • 1...Bf6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD::QAR1(G),XR(h)
    • R(h);N_GUARD::QAR1(G)
    • B(f);N_GUARD::QAB1(G),XB(f)
    • B(f);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(B);CHECK,XR(a)
      • Vars
        • K(b);S_FLIGHT::R(E)
      • Refutation
        • B(c);P_PINP(H),P_SPINB(c)
    • Try
      • Q(G);CHECK,XR(h)
      • Vars
        • K(b);S_FLIGHT::QAR1(G)
      • Refutation
        • Q(g);XQ(G)
  • Actual
    • S(C);
    • Threat
      • QAB1(G)
    • Vars
      • R(a);SBLOCK,XS(C)::R(E)+P(D)
      • B(f);N_GUARD::QAB1(G),XB(f)
      • Q(g);N_GUARD::QAR(G),XR(h)
      • R(h);SBLOCK::R(E)+P(D)
      • B(f);N_GUARD::QAB1(G)
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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).