MESON Chess Problem Database

Problem Display
PID: 43904 (b7/1n6/3b4/Ppkpp1R1/1N6/3P3Q/N6B/2K5 w - - 0 1)

Pierce, James

The Westminster Papers, 1877

b7/1n6/3b4/Ppkpp1R1/1N6/3P3Q/N6B/2K5

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bg1#
    • 1...e4
      • 2.Rxd5#
      • 2.Qe3#
  • Tries
    • 1.Sa6+?
      • 1...Kd4
        • 2.Bg1#
      • 1...Kc6!
    • 1.Rxe5?
      • threat
        • 2.Bg1#
        • 2.Rxd5#
        • 2.Qe3#
      • 1...Kd4
        • 2.Rxd5#
        • 2.Qe3#
      • 1...Sxa5
        • 2.Bg1#
        • 2.Qe3#
      • 1...Bc7
        • 2.Rxd5#
      • 1...Be7
        • 2.Rxd5#
      • 1...Bb8
        • 2.Rxd5#
      • 1...Bf8
        • 2.Rxd5#
      • 1...Sd8
        • 2.Bg1#
        • 2.Qe3#
      • 1...Bxe5!
    • 1.Qc8+?
      • 1...Kd4
        • 2.Bg1#
      • 1...Bc7!
  • Keys
    • 1.Qd7!
      • 1...Kd4
        • 2.Bg1#
      • 1...Sxa5
        • 2.Qa7#
      • 1...Sd8
        • 2.Qa7#
      • 1...Bc7
        • 2.Qxd5#
      • 1...Be7
        • 2.Qxd5#
      • 1...Bb8
        • 2.Qxd5#
      • 1...Bf8
        • 2.Qxd5#
      • 1...d4
        • 2.Qc6#
      • 1...e4
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(C)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(H);P_PINP(c),XP(d)
      • Threat
        • DUALS(3)
      • Vars
        • B(e);::R1(H),XP(c)
      • Refutation
        • B(e);N_SPINP(c),XR(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::B(C)
      • S(f);OGATE,XP(G)::QAB(E)
      • S(f);OGATE::QAB(E)
      • B(e);OGATE::QAR1(E),XP(c)
      • P(c);P_SPINP(d),SBLOCK::QAR1(E)
      • P(d);OGATE,P_SPINP(c)::R1(H),XP(c)
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).