MESON Chess Problem Database

Problem Display
PID: 51175 (2n1r3/1Bp5/3p1R2/rp1Pk2N/6p1/P1nKP2b/1R3Ppb/B7 w - - 0 1)

Luke, R

Manchester Guardian, 1952

2n1r3/1Bp5/3p1R2/rp1Pk2N/6p1/P1nKP2b/1R3Ppb/B7

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.exf4#
    • 1...Sb1
      • 2.Rxb1#
    • 1...Sa2
      • 2.Rxa2#
    • 1...Se2
      • 2.Rxe2#
    • 1...Sxd5
      • 2.Rxb5#
    • 1...g3
      • 2.f4#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Bxc3#
        • 2.Re4#
      • 1...Rxa3
        • 2.Re4#
      • 1...Ra4
        • 2.Bxc3#
      • 1...c6!
    • 1.f4+?
      • 1...Bxf4
        • 2.exf4#
      • 1...gxf4 ep!
  • Keys
    • 1.e4!
      • threat
        • 2.Rf5#
      • 1...Sxe4
        • 2.Re2#
      • 1...Sxd5
        • 2.Rxb5#
      • 1...Rf8
        • 2.Re6#
      • 1...Se7
        • 2.Re6#
      • 1...g3
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(b);OGATE::P(F),XB(b)
    • S(c);OGATEB::B(A)+R(B),XS(c)
    • S(c);OGATEB,XP(G)::B(A)+R(B),XP(g)
    • P(e);N_GUARD,S_CUTB(b)::P(C)
  • Tries
    • Try
      • R(B);P_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XP(D)::R1(B)
        • R(f);::B(A),XS(c)
      • Refutation
        • P(j);
    • Try
      • P(C);CHECK
      • Vars
        • B(b);OGATE,XP(C)::P(F),XB(b)
      • Refutation
        • P(e);EP,XP(C)
  • Actual
    • P(F);
    • Threat
      • R1(I)
    • Vars
      • S(c);OGATEB,XP(F)::B(A)+R(B)
      • S(c);OGATEB,XP(G)::B(A)+R(B),XP(g)
      • R(l);N_GUARD::R1(I)
      • S(k);S_CUTR(l)::R1(I)
      • P(e);N_GUARD,S_CUTB(b)::P(C)
HTML5 logo

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).