MESON Chess Problem Database

Problem Display
PID: 82168 (2R3B1/K7/1P2N1bR/pkP2p2/pN4Q1/b1n5/4p3/1n6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Main-Post, 1975

2R3B1/K7/1P2N1bR/pkP2p2/pN4Q1/b1n5/4p3/1n6

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb4
      • 2.Sd4#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sed4#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...Sd5
        • 2.Qxe2#
      • 1...Bf7!
    • 1.Sd3?
      • threat
        • 2.Sd4#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...Bf7
        • 2.Sc7#
      • 1...Sd5!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Sd4#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...Bf7
        • 2.Sec7#
      • 1...Sd5
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK,XS(A)::S(E)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(E)
      • Vars
        • B(c);OGATE,P_PINP(D),XP(C)::R1(H),XB(c)
        • S(d);N_GUARD::QAB(B),XP(b)
      • Refutation
        • B(i);
    • Try
      • S(A);
      • Threat
        • S(E)
      • Vars
        • B(c);OGATE,P_PINP(D),XP(C)::R1(H),XB(c)
        • B(i);::S(E)
      • Refutation
        • S(d);
  • Actual
    • S(A);
    • Threat
      • S(E)
    • Vars
      • B(c);OGATE,P_PINP(D),XP(C)::R1(H),XB(c)
      • B(i);::S(E)
      • S(d);N_GUARD::QAB(B),XP(b)
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).