MESON Chess Problem Database

Problem Display
PID: 110601 (3bRqN1/3PpP2/3Pk1P1/2Bn1n1N/B2PPP2/4p3/8/K7 w - - 0 1)

Szoghy, Jozsef

A Feladvany, 1983

3bRqN1/3PpP2/3Pk1P1/2Bn1n1N/B2PPP2/4p3/8/K7

#2

13 + 7

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg8
      • 2.fxg8Q#
      • 2.fxg8B#
    • 1...Sxf4
      • 2.Sxf4#
  • Tries
    • 1.dxe7?
      • threat
        • 2.exd8S#
        • 2.exf8S#
      • 1...Qxe7
        • 2.f8S#
      • 1...Qxf7
        • 2.exd8S#
      • 1...Qxg8
        • 2.exd8S#
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Bxe7
        • 2.d8S#
      • 1...Sdxe7
        • 2.d5#
      • 1...Sfxe7
        • 2.f5#
      • 1...Qh6
        • 2.exd8S#
      • 1...Qg7
        • 2.exd8S#
      • 1...Ba5
        • 2.exf8S#
      • 1...Bb6
        • 2.exf8S#
      • 1...Bc7
        • 2.exf8S#
      • 1...Qxe8!
  • Keys
    • 1.Sxe7!
      • threat
        • 2.exd5#
        • 2.exf5#
      • 1...Qxe7
        • 2.f8S#
      • 1...Qxf7
        • 2.exd5#
      • 1...Bxe7
        • 2.d8S#
      • 1...Sxf4
        • 2.exf5#
      • 1...Sdxe7
        • 2.d5#
      • 1...Sxd4
        • 2.exd5#
      • 1...Sxd6
        • 2.exd5#
      • 1...Sfxe7
        • 2.f5#
      • 1...Sc3
        • 2.exf5#
      • 1...Sb4
        • 2.exf5#
      • 1...Sb6
        • 2.exf5#
      • 1...Sf6
        • 2.exf5#
      • 1...Sc7
        • 2.exf5#
      • 1...Sg3
        • 2.exd5#
      • 1...Sh4
        • 2.exd5#
      • 1...Sh6
        • 2.exd5#
      • 1...Sg7
        • 2.exd5#

Anticipated by 145961(1952)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE,XS(M)::PXQ(g)=Q
    • S(b);XP(E)::S(G),XS(b)
  • Tries
    • Try
      • P(H);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XP(H)::P=S
        • Q(g);N_GUARD,XP(K)::PXB(f)=S
        • B(f);OGATE,P_SPINB(f),XP(H)::P=S
        • S(b);OGATE,P_SPINS(b),XP(H)::P(C)
        • S(c);OGATE,P_SPINS(c),XP(H)::P(E)
        • Q(g);N_GUARD::PXB(f)=S
        • Q(g);N_GUARD,P_PINP(C)::PXB(f)=S
        • B(f);N_GUARD::PXQ(g)=S
      • Refutation
        • Q(g);XR(L)
  • Actual
    • S(M);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);OGATE,P_SPINQ(g),XS(M)::P=S
      • Q(g);XP(K)::P(D),XS(b)
      • B(f);OGATE,P_SPINB(f),XS(M)::P=S
      • S(b);XP(E)::P(D),XS(c)
      • S(b);OGATE,P_SPINS(b),XS(M)::P(C)
      • S(c);XP(C)::P(D),XS(b)
      • S(c);XP(H)::P(D),XS(b)
      • S(c);OGATE,P_SPINS(c),XS(M)::P(E)
      • S(b);::P(D),XS(c)
      • S(c);::P(D),XS(b)
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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).