MESON Chess Problem Database

Problem Display
PID: 255097 (8/4p3/2P2p2/4k3/7K/1R2N1P1/Q1R5/1B6 w - - 0 1)

Larsson, Axel

Schackvarlden, 1932

8/4p3/2P2p2/4k3/7K/1R2N1P1/Q1R5/1B6

#2

8 + 3

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2?
      • threat
        • 2.Rb5#
      • 1...Ke6
        • 2.Rb5#
      • 1...f5!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Rd5#
      • 1...Ke6
        • 2.Rd3#
      • 1...Kd6!
    • 1.Qa5+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Rc4#
        • 2.Qd5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke6
        • 2.Qd5#
      • 1...Kd6!
  • Keys
    • 1.Sf5!
      • 1...Ke4
        • 2.Rc5#
      • 1...Kd5
        • 2.Re3#
      • 1...Kxf5
        • 2.Re2#
      • 1...Ke6
        • 2.Rb5#
      • 1...e6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::QAB(B)+R(D)
      • Refutation
        • P(b);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R1(C)
        • K(a);N_GUARD,P-FLIGHT::QAB(B)+R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::B(A)+R(C)
      • K(a);N_GUARD,P-FLIGHT::QAB(B)+R(D)
      • K(a);N_GUARD,P-FLIGHT,XS(E)::B(A)+R(C)
      • P(c);SBLOCK::R(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).