MESON Chess Problem Database

Problem Display
PID: 225197 (3K4/2pNpN2/B1k2p2/2q3R1/b7/8/2r5/3R2B1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 2002

3K4/2pNpN2/B1k2p2/2q3R1/b7/8/2r5/3R2B1

#2

7 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sb8#
    • 1...Qc3
      • 2.Sb8#
    • 1...Qc4
      • 2.Sb8#
    • 1...Qa5
      • 2.Sb8#
    • 1...Qe5
      • 2.Sb8#
    • 1...Qf5
      • 2.Sb8#
    • 1...Qxg5
      • 2.Sb8#
    • 1...Ra2
      • 2.Rxc5#
    • 1...Rb2
      • 2.Rxc5#
    • 1...Rd2
      • 2.Rxc5#
    • 1...Re2
      • 2.Rxc5#
    • 1...Rf2
      • 2.Rxc5#
    • 1...Rg2
      • 2.Rxc5#
    • 1...Rh2
      • 2.Rxc5#
  • Tries
    • 1.Ke8?
      • threat
        • 2.Sd8#
      • 1...Qd5
        • 2.Sb8#
      • 1...Rd2
        • 2.Rxc5#
      • 1...Qd4!
    • 1.Sfe5+?
      • 1...Qxe5
        • 2.Sb8#
      • 1...fxe5!
  • Keys
    • 1.Kc8!
      • threat
        • 2.Sd8#
      • 1...Qd4
        • 2.Bb7#
      • 1...Qd5
        • 2.Sb8#
      • 1...Rd2
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(c);::S(E)
    • Q(c);XR(C)::S(E)
    • R(a);N_GUARD::R1(C),XQ(c)
    • R(a);N_GUARD,P_PINS(E)::R1(C),XQ(c)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • S(F)
      • Vars
        • Q(c);::S(E)
        • R(a);N_GUARD::R1(C),XQ(c)
      • Refutation
        • Q(c);
    • Try
      • S(F);CHECK
      • Vars
        • Q(c);XS(F)::S(E)
      • Refutation
        • P(e);XS(F)
  • Actual
    • K(G);P-FLIGHT
    • Threat
      • S(F)
    • Vars
      • Q(c);::B(D)
      • Q(c);::S(E)
      • R(a);N_GUARD::R1(C),XQ(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).