MESON Chess Problem Database

Problem Display
PID: 195171 (2Rn4/r1b3BK/3P2B1/P2k1N1Q/3N1P2/2P5/1P6/8 w - - 0 1)

Sparke, Arthur M

Densmore MT (Pittsburgh Gazette-Times), 1918

2Rn4/r1b3BK/3P2B1/P2k1N1Q/3N1P2/2P5/1P6/8

#2

12 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
    • 1...Ke4
      • 2.Qf3#
    • 1...Bxa5
      • 2.Qf3#
      • 2.Qh1#
    • 1...Bb6
      • 2.Qf3#
      • 2.Qh1#
    • 1...Bxd6
      • 2.Se3#
      • 2.Se7#
      • 2.Qf3#
      • 2.Qh1#
    • 1...Bb8
      • 2.Qf3#
      • 2.Qh1#
  • Tries
    • 1.Sg3+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxd6!
    • 1.Sh4+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxd6!
    • 1.Sh6+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxd6!
    • 1.Se7+?
      • 1...Kc4
        • 2.Qb5#
        • 2.Qd5#
      • 1...Kxd6!
    • 1.Rxd8?
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc5
        • 2.Se3#
      • 1...Bxd8!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Se3#
      • 1...Bxa5+
        • 2.Sg7#
      • 1...Bb6+
        • 2.Sg7#
      • 1...Bxd6+
        • 2.Se7#
      • 1...Bb8+
        • 2.Sg7#
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINB(c),S_FLIGHT::S(F)
    • K(a);S_FLIGHT::QAB1(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);OGATE,P_SPINB(c),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);OGATE,P_SPINB(c),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);OGATE,P_SPINB(c),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • S(F);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • R(L);XS(d)
      • Threat
        • QAR(G)+S(F),DCHECK
      • Vars
        • K(a);S_FLIGHT::S(F)
        • K(a);S_FLIGHT::QAB1(G)
        • K(a);P-FLIGHT::QAR(G)+S(F)
      • Refutation
        • B(c);P_PINB(J),XR(L)
  • Actual
    • B(J);
    • Threat
      • QAR(G)+S(F),DCHECK
    • Vars
      • B(c);CHECK,XP(E)::QAR(G)+S(F)
      • B(c);CHECK::QAR(G)+S(F)
      • B(c);CHECK,SBLOCK,XP(H)::QAR(G)+S(F),DCHECK
      • K(a);P_SPINB(c),S_FLIGHT::S(F)
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);P-FLIGHT,P_SPINB(c)::QAR(G)+S(F)
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).