MESON Chess Problem Database

Problem Display
PID: 181821 (2b2RQ1/8/6pK/8/2N1k3/7n/2P1N3/5n2 w - - 0 1)

Kubbel, Arvid Ivanovich

Schweizerische Schachzeitung, 1905

2b2RQ1/8/6pK/8/2N1k3/7n/2P1N3/5n2

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qe6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bb7
      • 2.Qe6#
    • 1...Sg1
      • 2.Rf4#
    • 1...Sf2
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sg5
      • 2.Rf4#
  • Tries
    • 1.Qxg6+?
      • 1...Bf5
        • 2.Qxf5#
        • 2.Qg2#
        • 2.Qc6#
      • 1...Kd5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Qxg6#
      • 1...Bxf5
        • 2.Qa8#
      • 1...gxf5
        • 2.Qg2#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bb7
        • 2.Qe6#
      • 1...Se3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD::QAR2(F)
    • B(e);N_GUARD::QAR2(F),XB(e)
    • S(b);N_GUARD::R1(E)
    • S(b);N_GUARD::R1(E),XS(b)
  • Tries
    • Try
      • Q(F);CHECK,XP(d)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAB1(F)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(F),XP(d)
      • B(e);OGATE,SBLOCK,XR(E)::QAB(F)
      • P(d);OGATE,SBLOCK,XR(E)::QAB(F)
      • S(b);N_GUARD::R1(E),XS(b)
      • B(e);N_GUARD::QAR2(F),XB(e)
      • B(e);N_GUARD::QAR2(F)
      • S(a);SBLOCK::S(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).