MESON Chess Problem Database

Problem Display
PID: 175018 (4k3/1K2n1PP/3p1Pb1/3N4/8/8/BQ6/3R4 w - - 0 1)

Wilson, SB

American Chess World, 1901

4k3/1K2n1PP/3p1Pb1/3N4/8/8/BQ6/3R4

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc7+?
      • 1...Kd8
        • 2.Rxd6#
      • 1...Kd7!
    • 1.Qe2?
      • threat
        • 2.Qxe7#
      • 1...Kd7
        • 2.Qxe7#
      • 1...Kf7
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...Be4!
    • 1.g8Q+?
      • 1...Kd7
        • 2.Sb6#
      • 1...Sxg8!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxe7#
      • 1...Kd7
        • 2.Qxe7#
      • 1...Kf7
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...dxe5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(a)::R(A),XP(a)
      • Refutation
        • K(d);P_SPINP(a),S_FLIGHT
    • Try
      • Q(C);P_PINS(c)
      • Threat
        • QAR1(C),XS(c)
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAR1(C),XS(c)
        • K(d);N_SPINS(c),P-FLIGHT::QAB1(C),XS(c)
      • Refutation
        • B(b);N_SPINS(c),P_PINS(D)
    • Try
      • P(G);CHECK
      • Vars
        • K(d);S_FLIGHT::S(D)
      • Refutation
        • S(c);XQ(G)
  • Actual
    • Q(C);P_PINS(c)
    • Threat
      • QAR1(C),XS(c)
    • Vars
      • K(d);N_SPINS(c),S_FLIGHT::QAR1(C),XS(c)
      • K(d);N_SPINS(c),P-FLIGHT::QAB1(C),XS(c)
      • P(a);N_SPINS(c),XQ(C)::S(D)
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).