MESON Chess Problem Database

Problem Display
PID: 266288 (2B5/2p4K/p1k3N1/P5R1/p2n1N2/B3bp2/1nb5/1qR4Q w - - 0 1)

Sebastia, V

Probleemblad, 1950

2B5/2p4K/p1k3N1/P5R1/p2n1N2/B3bp2/1nb5/1qR4Q

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Se7#
    • 1...Se2
      • 2.Qxf3#
    • 1...Sb3
      • 2.Qxf3#
    • 1...Sb5
      • 2.Qxf3#
    • 1...Se6
      • 2.Qxf3#
  • Tries
    • 1.Rxc2+?
      • 1...Sc4
        • 2.Se7#
        • 2.Rxc4#
      • 1...Sxc2
        • 2.Se7#
        • 2.Qxf3#
      • 1...Qxc2!
    • 1.Qh3?
      • threat
        • 2.Qd7#
      • 1...Se6
        • 2.Qxe6#
        • 2.Qxf3#
      • 1...Sf5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qxa6#
      • 1...Sd3
        • 2.Se7#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Se2
        • 2.Qxf3#
      • 1...Sb3
        • 2.Qxf3#
      • 1...Sb5
        • 2.Qxf3#
      • 1...Sf5
        • 2.Se5#
      • 1...Se6
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);N_PINS(G)::S(G)
    • S(g);N_GUARD::QAB(B),XP(e)
  • Tries
    • Try
      • R(A);CHECK,N_SPINS(G),XB(c)
      • Refutation
        • Q(a);P_PINS(G),XR(A)
    • Try
      • Q(B);N_PINP(e)
      • Threat
        • QAB1(B)
      • Refutation
        • S(g);N_PINS(G)
  • Actual
    • Q(B);N_PINP(e)
    • Threat
      • QAR2(B),XP(h)
    • Vars
      • S(b);N_PINS(G)::S(G)
      • S(b);N_GUARD::QAR2(B)
      • S(b);N_GUARD,N_SPINB(c)::QAR2(B),XS(b)
      • S(g);N_GUARD::QAB(B),XP(e)
      • S(g);N_PINS(G)::S(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).