MESON Chess Problem Database

Problem Display
PID: 101300 (8/1K3RPr/2B1p3/2Pn3p/2RBkp2/Q3pp1b/1P3nP1/1r6 w - - 0 1)

Windle, REL

Good Companions, 1919

8/1K3RPr/2B1p3/2Pn3p/2RBkp2/Q3pp1b/1P3nP1/1r6

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb2+
      • 2.Bxb2#
    • 1...Rxg7
      • 2.Bxg7#
    • 1...Bf5
      • 2.Bf6#
    • 1...Sd3
      • 2.Bc3#
    • 1...e2
      • 2.Qxf3#
      • 2.gxf3#
    • 1...e5
      • 2.Bxe3#
  • Tries
    • 1.Qd3+?
      • 1...Sxd3
        • 2.Bc3#
      • 1...Kxd3!
  • Keys
    • 1.g3!
      • threat
        • 2.Rxf4#
      • 1...Rxb2+
        • 2.Bxb2#
      • 1...Rxg7
        • 2.Bxg7#
      • 1...fxg3
        • 2.Qxe3#
      • 1...Bf5
        • 2.Bf6#
      • 1...Sd3
        • 2.Bc3#
      • 1...e5
        • 2.Bxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,XP(A)::R(D)+B(E),XR(a)
    • R(k);OGATE,P_PINR(I),XP(J)::R(D)+B(E),XR(k)
    • B(e);SBLOCK::R(D)+B(E)
    • S(b);SBLOCK::R(D)+B(E)
    • P(j);SBLOCK::R(D)+B(E),XP(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);SBLOCK,XQ(C)::R(D)+B(E)
      • Refutation
        • K(f);N_SPINS(h),S_FLIGHT,XQ(C)
  • Actual
    • P(B);
    • Threat
      • R1(I),XP(g)
    • Vars
      • R(a);CHECK,OGATE,XP(A)::R(D)+B(E),XR(a)
      • R(k);OGATE,P_PINR(I),XP(J)::R(D)+B(E),XR(k)
      • P(g);N_GUARD,XP(B)::QAR1(C),XP(c)
      • B(e);SBLOCK::R(D)+B(E)
      • S(b);SBLOCK::R(D)+B(E)
      • P(j);SBLOCK::R(D)+B(E),XP(c)
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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).