MESON Chess Problem Database

Problem Display
PID: 151811 (1B4n1/5K2/4NPQp/1BpkP2N/1p6/1r6/1qp3R1/1nb5 w - - 0 1)

Windle, REL

Good Companions (December), 1914

1B4n1/5K2/4NPQp/1BpkP2N/1p6/1r6/1qp3R1/1nb5

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Shf4#
    • 1...Bf4
      • 2.Shxf4#
    • 1...Sd2
      • 2.Shf4#
    • 1...Sc3
      • 2.Qd3#
    • 1...Sxf6
      • 2.Sxf6#
  • Tries
    • 1.Rd2+?
      • 1...Qd4
        • 2.Shf4#
        • 2.Sef4#
      • 1...Rd3
        • 2.Shf4#
        • 2.Qg2#
      • 1...Sxd2
        • 2.Shf4#
      • 1...Bxd2!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qe4#
      • 1...Qxe5
        • 2.Rxe5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Qd4
        • 2.Sc7#
      • 1...Re3
        • 2.Shf4#
      • 1...Be3
        • 2.Qg2#
      • 1...Sd2
        • 2.Shf4#
      • 1...Sc3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);S_CUTB(b)::S(D)
    • B(b);N_GUARD::S(D),XB(b)
    • S(a);S_CUTB(b)::S(D)
    • S(a);S_CUTQ(c),S_CUTR(e)::QAR2(G)
    • S(j);XP(F)::S(D),XS(j)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(a);XR(A)::S(D)
      • Refutation
        • B(b);XR(A)
  • Actual
    • R(A);
    • Threat
      • QAB1(G)
    • Vars
      • Q(c);OGATE,XP(C)::R1(A),XQ(c)
      • S(j);XP(F)::S(D),XS(j)
      • Q(c);SBLOCK::S(E)
      • R(e);S_CUTB(b)::S(D)
      • B(b);S_CUTR(e)::QAB(G)
      • S(a);S_CUTB(b)::S(D)
      • S(a);S_CUTQ(c),S_CUTR(e)::QAR2(G)
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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).