MESON Chess Problem Database

Problem Display
PID: 242991 (b2Q3b/7p/8/R2Pk3/3RN1pr/4n2r/2n4p/4N2K w - - 0 1)

Lindquist, Carl Emil Richard

Tidskrift for Schack, 1915

b2Q3b/7p/8/R2Pk3/3RN1pr/4n2r/2n4p/4N2K

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qg5#
    • 1...Kf5
      • 2.Qg5#
    • 1...Bf6
      • 2.Qxf6#
  • Tries
    • 1.Sd3+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kxd4!
    • 1.Qe7+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Kxd4!
    • 1.Qxh8+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kf4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Re4#
      • 1...Kxd4
        • 2.Qxh8#
      • 1...Sxd4
        • 2.Sd3#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(g);S_FLIGHT::QAB1(G)
    • K(g);P-FLIGHT::QAR1(G)
    • B(j);N_GUARD::QAB1(G),XB(j)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(g);P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT,XR(C)
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(G)
        • K(g);P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT,XR(C)
    • Try
      • Q(G);CHECK,XB(j)
      • Vars
        • K(g);P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • S(D);P_SPINP(F)
    • Threat
      • R1(C)
    • Vars
      • K(g);S_FLIGHT,XR(C)::QAB(G),XB(j)
      • S(a);SBLOCK,XR(C)::S(A)
      • P(e);N_GUARD,S_CUTR(d)::S(A)
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).