MESON Chess Problem Database

Problem Display
PID: 207174 (B4r2/p6n/7B/KQ1n2r1/1p3kP1/8/b2P3N/b3RN2 w - - 0 1)

Anonymous

Il Problema, 1933

B4r2/p6n/7B/KQ1n2r1/1p3kP1/8/b2P3N/b3RN2

#2

9 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qe5#
    • 1...Se3
      • 2.dxe3#
    • 1...Sb6
      • 2.Re4#
    • 1...Sdf6
      • 2.Qf5#
    • 1...Sc7
      • 2.Re4#
    • 1...Se7
      • 2.Re4#
  • Tries
    • 1.Qc4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bxc4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qf2#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Qe5#
      • 1...Se3
        • 2.dxe3#
      • 1...Sb6
        • 2.Re4#
      • 1...Sdf6
        • 2.Qf5#
      • 1...Sc7
        • 2.Re4#
      • 1...Se7
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE,P_PINQ(G)::QAB1(G)
    • S(e);OGATE,P_PINQ(G)::P(C),XS(e)
    • S(e);P_PINQ(G)::R1(A)
    • S(e);OGATE,P_PINQ(G)::QAR1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(G),XB(a)
      • Refutation
        • B(b);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G)
    • Vars
      • B(a);N_GUARD::QAR2(G),XB(a)
      • S(e);OGATE,P_PINQ(G)::QAB1(G)
      • S(e);OGATE,P_PINQ(G)::P(C),XS(e)
      • S(e);P_PINQ(G)::R1(A)
      • S(e);OGATE,P_PINQ(G)::QAR1(G)
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).