MESON Chess Problem Database

Problem Display
PID: 258560 (7Q/6n1/pN2p2N/4P3/1n1Bk3/1K2P3/4B1pb/8 w - - 0 1)

Bakcsi, Gyorgy

Buletin Problemistic, 1987

7Q/6n1/pN2p2N/4P3/1n1Bk3/1K2P3/4B1pb/8

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qa8#
    • 1...Sc2
      • 2.Qa8#
    • 1...Sd3
      • 2.Qa8#
    • 1...Sh5
      • 2.Qh7#
    • 1...Se8
      • 2.Qh7#
  • Tries
    • 1.Kxb4?
      • threat
        • 2.Qa8#
      • 1...Se8
        • 2.Qh7#
      • 1...a5+!
    • 1.Sf7?
      • threat
        • 2.Sd6#
      • 1...Kf5
        • 2.Qh7#
      • 1...Sf5
        • 2.Sg5#
      • 1...Se8
        • 2.Qh7#
      • 1...Bxe5!
    • 1.Qa8+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd5!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sc3#
      • 1...Kd5
        • 2.Bf3#
      • 1...Sa2
        • 2.Qa8#
      • 1...Sd5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::QAB(H)
    • S(g);N_GUARD::QAB(H)
  • Tries
    • Try
      • K(B);P-FLIGHT,XS(c)
      • Threat
        • QAB(H)
      • Vars
        • S(g);N_GUARD::QAB(H)
      • Refutation
        • P(e);CHECK
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(d);S_CUTS(g),S_FLIGHT::QAB(H)
        • S(g);SBLOCK::S(G)
        • S(g);N_GUARD::QAB(H)
      • Refutation
        • B(b);XP(E)
    • Try
      • Q(H);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(H),XS(c)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::B(A)
      • S(c);N_GUARD::QAB(H)
      • S(c);SBLOCK::S(F)
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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).