MESON Chess Problem Database

Problem Display
PID: 202308 (2B5/1p3K2/1r2nn1B/1N2pk2/2R2qp1/2N1p1b1/7Q/5R2 w - - 0 1)

Funk, Henry E

Good Companions, 1923

2B5/1p3K2/1r2nn1B/1N2pk2/2R2qp1/2N1p1b1/7Q/5R2

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb5
      • 2.Bxe6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Sd5
      • 2.Qh5#
    • 1...Sh5
      • 2.Qxh5#
    • 1...Se8
      • 2.Qh5#
    • 1...Sg8
      • 2.Qh5#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sxe3#
        • 2.Se7#
      • 1...Sxd5
        • 2.Qh5#
      • 1...Bf2
        • 2.Se7#
      • 1...Sg8
        • 2.Sxe3#
        • 2.Qh5#
      • 1...e2
        • 2.Se3#
        • 2.Se7#
      • 1...e4!
    • 1.Qc2+?
      • 1...Se4
        • 2.Qxe4#
      • 1...e4!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Sd4#
      • 1...Rxb5
        • 2.Bxe6#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Bf2
        • 2.Qxf4#
      • 1...Sd5
        • 2.Qh5#
      • 1...Sd7
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD,XS(E)::B(H),XS(h)
    • R(g);N_GUARD::S(E),XR(g)
    • S(i);N_GUARD::QAR2(B)
    • S(i);N_GUARD::QAR2(B),XS(i)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_GUARD,XS(C)::QAR2(B)
        • B(b);N_SPINQ(c)::S(C)
      • Refutation
        • P(e);
    • Try
      • Q(B);CHECK
      • Vars
        • S(i);N_GUARD,N_SPINS(h),P_SPINS(i)::QAB1(B),XS(i)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • R(D);P_PINP(e)
    • Threat
      • S(E)
    • Vars
      • R(g);N_GUARD,XS(E)::B(H),XS(h)
      • R(g);N_GUARD::S(E),XR(g)
      • B(b);N_SPINQ(c),OGATE::QAR1(B),XQ(c)
      • S(i);N_GUARD,N_SPINP(e)::QAR2(B)
      • S(i);N_GUARD,N_SPINS(h)::QAB(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).