MESON Chess Problem Database

Problem Display
PID: 4621 (1N6/5n2/2Prp2R/1p6/1r1k1nPB/4R3/6B1/b1Q1N2K w - - 0 1)

Rayner, James

3rd Prize, Lett's Household Magazine, 1884

1N6/5n2/2Prp2R/1p6/1r1k1nPB/4R3/6B1/b1Q1N2K

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qc3#
    • 1...Rd5
      • 2.Sf3#
      • 2.Re4#
    • 1...Rxc6
      • 2.Sxc6#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Sd5
      • 2.Sf3#
      • 2.Re4#
  • Tries
    • 1.Bf6+?
      • 1...Se5
        • 2.Bxe5#
      • 1...e5!
    • 1.Rd3+?
      • 1...Ke5
        • 2.Bf6#
      • 1...Sxd3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qc5#
      • 1...Kxe5
        • 2.Bf6#
      • 1...Rxc6
        • 2.Sxc6#
      • 1...Sxe5
        • 2.Bf2#
      • 1...Bc3
        • 2.Qxf4#
      • 1...Rc4
        • 2.Qe3#
      • 1...Rd5
        • 2.Re4#
      • 1...Sd3
        • 2.Sf3#
      • 1...Sd5
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);S_CUTB(a)::QAB1(A)
    • R(f);XP(H)::S(J),XR(f)
    • B(a);N_GUARD::QAB1(A),XB(a)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::B(G),XS(h)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • R(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(G)
      • Refutation
        • S(d);XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::B(G)
      • R(f);XP(H)::S(J),XR(f)
      • S(h);SBLOCK,XR(E)::B(G)
      • B(a);SBLOCK::QAR2(A),XS(d)
      • R(b);SBLOCK::QAB1(A)
      • R(f);SBLOCK::R1(E)
      • S(d);SBLOCK::S(B)
      • S(d);SBLOCK::R1(E)
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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).