MESON Chess Problem Database

Problem Display
PID: 193688 (8/7K/6Rp/5k2/4q2b/8/2B5/B1Q2N1n w - - 0 1)

Phelps, Francis Bradley

Pittsburgh Gazette-Times, 1915

8/7K/6Rp/5k2/4q2b/8/2B5/B1Q2N1n

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Bxd3#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qf3#
        • 2.Qg4#
      • 1...Kf4
        • 2.Qg4#
      • 1...Bf6
        • 2.Qg4#
      • 1...Bg3
        • 2.Qg4#
      • 1...Sf2
        • 2.Qf3#
      • 1...h5
        • 2.Qf3#
      • 1...Bg5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Bxe4#
        • 2.Qf3#
        • 2.Qxe4#
      • 1...Qxc2
        • 2.Qf3#
        • 2.Qe5#
      • 1...Bg5
        • 2.Qxe4#
      • 1...Bf6
        • 2.Qxe4#
      • 1...Qd3
        • 2.Bxd3#
        • 2.Qf3#
        • 2.Qe5#
      • 1...Bg3
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Sf2
        • 2.Qf3#
      • 1...Sg3
        • 2.Qf2#
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATEB::B(D),XQ(b)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINQ(b),P-FLIGHT,P_PINR(E)::QAR1(B)
        • B(c);::QAB1(B)
        • S(a);::QAR2(B)
        • P(e);::QAR2(B)
      • Refutation
        • B(c);
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • B(c);::QAB1(B),XQ(b)
      • S(a);::QAR2(B)
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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).