MESON Chess Problem Database

Problem Display
PID: 63634 (K1Bk1N2/1R1P4/2R5/N7/1Q5q/5n2/3n2b1/4r1br w - - 0 1)

Farnes, K

Chess, 1946

K1Bk1N2/1R1P4/2R5/N7/1Q5q/5n2/3n2b1/4r1br

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Se6#
    • 1...Rb1
      • 2.Se6#
    • 1...Rc1
      • 2.Se6#
    • 1...Rd1
      • 2.Se6#
    • 1...Rf1
      • 2.Se6#
    • 1...Re6
      • 2.Sxe6#
    • 1...Be3
      • 2.Se6#
    • 1...Se4
      • 2.Se6#
    • 1...Se5
      • 2.Se6#
  • Tries
    • 1.Qb6+?
      • 1...Ke7
        • 2.d8Q#
        • 2.d8R#
      • 1...Bxb6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sc6#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Qc4
        • 2.Qe7#
      • 1...Qe4
        • 2.Qe7#
      • 1...Ra1
        • 2.Re8#
      • 1...Rc1
        • 2.Re8#
      • 1...Sh2
        • 2.Qxh4#
      • 1...Sd4
        • 2.Qb6#
      • 1...Se5
        • 2.Re8#
      • 1...Sg5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,P_PINS(B)::S(H)
    • R(a);N_GUARD::S(H)
    • R(a);N_GUARD::S(H),XR(a)
    • B(b);S_CUTR(a)::S(H)
    • S(d);S_CUTR(a)::S(H)
    • S(f);S_CUTR(a)::S(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(h);OGATE,S_FLIGHT::P=Q
      • Refutation
        • B(b);XQ(A)
  • Actual
    • R(C);
    • Threat
      • S(B)
    • Vars
      • R(a);XR(C)::S(H),XR(a)
      • Q(g);N_GUARD::QAB1(A)
      • Q(g);N_GUARD,P_PINR(D)::QAB1(A)
      • R(a);N_GUARD,P_PINS(B)::R1(C)
      • R(a);N_GUARD::R1(C)
      • S(f);N_GUARD,P_PINR(D),S_CUTR(c)::QAB(A),XQ(g)
      • S(f);P_PINR(D),S_CUTB(b)::QAB(A)
      • S(f);P_PINR(D),S_CUTR(a)::R1(C)
      • S(f);P_PINR(D),S_CUTQ(g)::QAB1(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).