MESON Chess Problem Database

Problem Display
PID: 71323 (B1Q5/8/2p4p/4ppqR/1N2kN2/2KR4/5P1n/8 w - - 0 1)

Bograd, Leib

Revista Romana de Sah, 1935

B1Q5/8/2p4p/4ppqR/1N2kN2/2KR4/5P1n/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Bxc6#
      • 2.Qxc6#
    • 1...Qh4
      • 2.Qxf5#
    • 1...Qe7
      • 2.Qxf5#
    • 1...Qd8
      • 2.Qxf5#
    • 1...Qg1
      • 2.Qxf5#
    • 1...Qg2
      • 2.Qxf5#
    • 1...Qg3
      • 2.Qxf5#
    • 1...Qg7
      • 2.Qxf5#
    • 1...Qg8
      • 2.Qxf5#
    • 1...exf4
      • 2.Qe6#
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Qxf5#
      • 1...Kxf4
        • 2.Qxf5#
      • 1...hxg5!
  • Keys
    • 1.Sbd5!
      • threat
        • 2.Re3#
      • 1...Qxf4
        • 2.Sf6#
      • 1...exf4
        • 2.Qe6#
      • 1...cxd5
        • 2.Qc4#
      • 1...Qg3
        • 2.Qxf5#
      • 1...Sf1
        • 2.f3#
      • 1...Sg4
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(e);N_GUARD::QAB1(H),XP(d)
    • Q(e);N_GUARD,P_PINR(C)::QAB1(H),XP(d)
    • P(c);OGATEB,SBLOCK,XS(E)::QAR2(H)
  • Tries
    • Try
      • R(F);XQ(e)
      • Threat
        • QAB1(H),XP(d)
      • Vars
        • K(b);N_SPINP(f),P-FLIGHT,XS(E)::QAR1(H),XP(d)
      • Refutation
        • P(g);XR(F)
  • Actual
    • S(D);N_PINP(f)
    • Threat
      • R1(C)
    • Vars
      • Q(e);N_GUARD,SBLOCK,XS(E)::S(D)
      • P(c);OGATEB,XS(E)::QAR2(H)
      • P(f);OGATE,P_SPINP(f),XS(D)::QAR2(H)
      • Q(e);N_GUARD,P_PINR(C)::QAB1(H),XP(d)
      • S(a);N_GUARD::P(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).