MESON Chess Problem Database

Problem Display
PID: 206470 (5bN1/1N1p2p1/1p4nQ/2pBk1P1/1R2P1Kn/4B1p1/8/2r5 w - - 0 1)

Low, Fulop

Ujsag, 1925

5bN1/1N1p2p1/1p4nQ/2pBk1P1/1R2P1Kn/4B1p1/8/2r5

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qxg7#
    • 1...Sf4
      • 2.Bxf4#
    • 1...Se7
      • 2.Bf4#
      • 2.Qd6#
    • 1...Sh8
      • 2.Bf4#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sf7#
      • 1...Kd6
        • 2.Bf4#
      • 1...Sh8
        • 2.Bf4#
      • 1...Rf1!
    • 1.Sf6?
      • threat
        • 2.Sxd7#
      • 1...d6
        • 2.Sd7#
      • 1...gxf6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Bf4#
      • 1...Bxd6
        • 2.Qxg7#
      • 1...Rf1
        • 2.Sc4#
      • 1...Sh8
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD::QAB(G),XP(i)
    • S(g);N_GUARD::B(A),XS(g)
    • S(g);N_GUARD::B(A)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • K(e);P_SPINS(g),S_FLIGHT::B(A)
        • S(g);N_GUARD::B(A)
      • Refutation
        • R(a);
    • Try
      • S(I);
      • Threat
        • S(I),XP(h)
      • Vars
        • P(h);::S(I)
      • Refutation
        • P(i);XS(I)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(e);P_SPINS(g),S_FLIGHT,XS(H)::B(A)
      • B(j);N_GUARD,SBLOCK,XS(H)::QAB(G),XP(i)
      • R(a);N_GUARD::S(H)
      • S(g);N_GUARD::B(A)
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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).