MESON Chess Problem Database

Problem Display
PID: 101566 (1K6/2R5/4p3/4k3/4P3/8/6Q1/2N2R2 w - - 0 1)

Schor, Laszlo

Good Companions, 1922

1K6/2R5/4p3/4k3/4P3/8/6Q1/2N2R2

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Kd6
        • 2.e5#
      • 1...Kd4!
    • 1.Rd1?
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
    • 1.Rf6?
      • 1...Kd6
        • 2.Qh2#
        • 2.Qg3#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Kd4!
    • 1.Qg1?
      • 1...Kd6
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kxe4!
    • 1.Qb2+?
      • 1...Kd6
        • 2.Rd1#
        • 2.Qd4#
      • 1...Kxe4!
    • 1.Qc2?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kd4!
    • 1.Qf2?
      • 1...Kd6
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kxe4!
    • 1.Qg5+?
      • 1...Kxe4
        • 2.Rc4#
      • 1...Kd6
        • 2.Rd1#
        • 2.Qc5#
      • 1...Kd4!
    • 1.Qg7+?
      • 1...Kd6
        • 2.Rd1#
        • 2.Qd4#
      • 1...Kxe4!
  • Keys
    • 1.Re1!
      • 1...Kd4
        • 2.Qb2#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.e5#
      • 1...Kf6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::P(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(D)
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::QAB(C)
      • K(a);S_FLIGHT::S(A)
      • K(a);OGATE,S_FLIGHT::P(D)
      • K(a);S_FLIGHT::QAB1(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).