MESON Chess Problem Database

Problem Display
PID: 51239 (1B3N2/2n5/1R1rPNp1/4k1P1/6P1/b1P5/1n1p3K/1b3Q2 w - - 0 1)

Luke, R

Manchester Guardian, 1955

1B3N2/2n5/1R1rPNp1/4k1P1/6P1/b1P5/1n1p3K/1b3Q2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sxg6#
    • 1...Rxe6
      • 2.S8d7#
      • 2.Rxe6#
    • 1...Rd7
      • 2.S8xd7#
    • 1...Sxe6
      • 2.S8d7#
  • Tries
    • 1.Qe2+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kf4!
    • 1.Qf3?
      • threat
        • 2.Qg3#
      • 1...Sxe6
        • 2.S6d7#
        • 2.S8d7#
      • 1...Rd3
        • 2.Sxg6#
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
        • 2.Qe3#
      • 1...Sd5
        • 2.S6d7#
      • 1...Rd4!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qg3#
      • 1...Sxe6
        • 2.S8d7#
      • 1...Rd3
        • 2.Sxg6#
      • 1...Rd4
        • 2.Qxd4#
        • 2.cxd4#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sd5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(f);P_SPINS(h),S_CUTB(a)::S(J),XP(g)
    • R(f);N_GUARD,P_SPINS(h)::S(J),XR(f)
    • S(h);P_SPINR(f),SBLOCK,XP(G)::S(J)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(h);P_SPINR(f)::S(H)
      • Refutation
        • R(f);P_SPINS(h)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(h);P_SPINR(f),SBLOCK,XP(G)::S(J)
      • R(f);P_SPINS(h),S_CUTB(a)::S(J),XP(g)
      • S(b);S_CUTB(a)::QAR2(A)
      • S(h);P_SPINR(f)::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).