MESON Chess Problem Database

Problem Display
PID: 218551 (1Q6/5K2/1R1N4/3pN3/p2kp3/B5P1/8/1B6 w - - 0 1)

Phelps, Francis Bradley

Cincinnati Commercial, 1881

1Q6/5K2/1R1N4/3pN3/p2kp3/B5P1/8/1B6

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qh8#
    • 1...e3
      • 2.Sb5#
  • Tries
    • 1.Sec4?
      • threat
        • 2.Qh8#
      • 1...Kc3
        • 2.Bb2#
      • 1...dxc4!
    • 1.Bb2+?
      • 1...Kc5
        • 2.Sd7#
        • 2.Rb5#
        • 2.Rc6#
        • 2.Qc7#
      • 1...Ke3!
    • 1.Bb4?
      • threat
        • 2.Sf5#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Ke3!
    • 1.Rb3?
      • threat
        • 2.Sc6#
        • 2.Sb5#
        • 2.Sf5#
      • 1...Kxe5
        • 2.Qh8#
      • 1...axb3!
    • 1.Ra6?
      • 1...Kc3
        • 2.Qb2#
        • 2.Qb4#
      • 1...Kxe5
        • 2.Qh8#
      • 1...e3
        • 2.Sb5#
        • 2.Qb2#
      • 1...Ke3!
    • 1.Rc6?
      • threat
        • 2.Sf5#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Ke3!
    • 1.Qc8?
      • 1...Kxe5
        • 2.Qh8#
      • 1...e3
        • 2.Sf3#
        • 2.Bb2#
      • 1...Ke3!
  • Keys
    • 1.Rb2!
      • 1...Kc3
        • 2.Sb5#
        • 2.Qb4#
      • 1...Ke3
        • 2.Sf5#
      • 1...Kxe5
        • 2.Qh8#
      • 1...e3
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
    • P(c);SBLOCK::S(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB(H)
      • Vars
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • P(d);XS(D)
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • S(F)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • Refutation
        • P(a);XR(E)
    • Try
      • R(E);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • S(F)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(b);S_FLIGHT::S(F)
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(H)
      • P(c);SBLOCK::S(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).