MESON Chess Problem Database

Problem Display
PID: 231353 (8/3RP2K/5P1B/pR1NP3/4k1p1/2Q3p1/2r2p2/nB6 w - - 0 1)

Boros, Sandor

Vas Femmunkasok Lapja, 1927

8/3RP2K/5P1B/pR1NP3/4k1p1/2Q3p1/2r2p2/nB6

#2

10 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Bxc2#
  • Tries
    • 1.Qxc2+?
      • 1...Kf3
        • 2.Qe4#
      • 1...Kd4
        • 2.Se3#
        • 2.Sb4#
        • 2.Sb6#
        • 2.Sc7#
        • 2.Qe4#
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Sxc2!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxd3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Se3#
      • 1...Kd3
        • 2.Sc3#
      • 1...Kf3
        • 2.Sc3#
      • 1...Kd4
        • 2.Sc3#
        • 2.Se3#
        • 2.Sb4#
        • 2.Sb6#
        • 2.Sc7#
      • 1...Kxe5
        • 2.Sc3#
      • 1...Kf5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • Q(B);CHECK,XR(b)
      • Vars
        • K(e);S_FLIGHT::QAB1(B)
        • K(e);P-FLIGHT,XP(E)::QAR1(B)
      • Refutation
        • S(a);P_SPINS(a),XQ(B)
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Vars
        • K(e);P-FLIGHT,XP(E)::P=Q
      • Refutation
        • K(e);P_SPINR(b),S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+S(D)
    • Vars
      • K(e);S_FLIGHT::R(H)+S(D)
      • K(e);N_SPINR(b),S_FLIGHT::QAB(B)+S(D)
      • K(e);N_SPINR(b),P-FLIGHT,XP(E)::R(C)+S(D)
      • K(e);S_FLIGHT::S(D)
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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).