MESON Chess Problem Database

Problem Display
PID: 195190 (4R3/7B/1P2N3/5P2/2p1k1K1/1pp3B1/Q3P3/5rN1 w - - 0 1)

McIlvane, John A

Pittsburgh Gazette-Times, 1918

4R3/7B/1P2N3/5P2/2p1k1K1/1pp3B1/Q3P3/5rN1

#2

10 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qa8#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...Ke3
        • 2.Sed4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Seg5#
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Sf8#
      • 1...Kd5
        • 2.Qa8#
      • 1...Rxf3!
    • 1.Qd2?
      • threat
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Sf8#
        • 2.Qd4#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Rd1
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sc7#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Sf8#
        • 2.f6#
      • 1...cxd2!
  • Keys
    • 1.e3!
      • threat
        • 2.Sf4#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Kd3
        • 2.Sc5#
      • 1...Kxe3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAB(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB(B)
      • Refutation
        • R(a);XS(A)
    • Try
      • Q(B);
      • Threat
        • DUALS(8)
      • Vars
        • R(a);CHECK::R(J)+S(H),XR(a)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • P(C);
    • Threat
      • R(J)+S(H)
    • Vars
      • R(a);CHECK::R(J)+S(H),XR(a)
      • K(e);S_FLIGHT::S(H)
      • K(e);OGATEB,P-FLIGHT,XP(C)::QAR1(B)
      • K(e);S_FLIGHT::QAB(B)
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).