MESON Chess Problem Database

Problem Display
PID: 179950 (5R2/7b/8/Q3NNnK/4qkp1/1B1r1P2/8/5R2 w - - 0 1)

Gross, Erwin

Neue Leipziger Zeitung, 1926

5R2/7b/8/Q3NNnK/4qkp1/1B1r1P2/8/5R2

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Sxd3#
    • 1...Qb7
      • 2.Sxd3#
    • 1...Qa8
      • 2.Sxd3#
    • 1...Qe1
      • 2.Sxd3#
    • 1...Qa4
      • 2.Sxd3#
    • 1...Qb4
      • 2.Sxd3#
    • 1...Bg6+
      • 2.Sxg6#
    • 1...Bg8
      • 2.Sg6#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qg3#
      • 1...Bg6+
        • 2.Sxg6#
      • 1...Kxe5
        • 2.f4#
      • 1...Qxf3
        • 2.Sxd3#
      • 1...Qxf5
        • 2.Sxd3#
      • 1...Qxe1
        • 2.Sxd3#
      • 1...Bxf5
        • 2.Sg6#
      • 1...Sf7
        • 2.Qxe4#
      • 1...g3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::S(E),XR(a)
    • B(f);CHECK,N_GUARD::S(E),XB(f)
    • B(f);N_GUARD::S(E)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • B(f);CHECK,N_GUARD::S(E),XB(f)
      • K(c);OGATE,P_SPINQ(b),S_FLIGHT,XS(E)::P(C)
      • Q(b);N_GUARD,P_SPINQ(b),XP(C)::S(E),XR(a)
      • Q(b);N_GUARD,P_SPINQ(b),XS(F)::S(E),XR(a)
      • Q(b);N_GUARD,XQ(D)::S(E),XR(a)
      • B(f);N_GUARD,P_SPINB(f),XS(F)::S(E)
      • S(e);N_GUARD::QAR1(D),XQ(b)
      • P(d);::QAB1(D),XP(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).