MESON Chess Problem Database

Problem Display
PID: 141138 (B6B/4R1b1/1P2r1N1/QN1P1r2/2p1k1n1/2p2n1R/2P2P2/K7 w - - 0 1)

Anderson, Martin (England)

Source?, 0000

B6B/4R1b1/1P2r1N1/QN1P1r2/2p1k1n1/2p2n1R/2P2P2/K7

#2

12 + 8

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.d6#
    • 1...Bd4
      • 2.Sd6#
    • 1...Be5
      • 2.dxe6#
      • 2.d6#
    • 1...Bh6
      • 2.Sxc3#
      • 2.Sd6#
    • 1...Bf8
      • 2.Sxc3#
      • 2.Sd6#
    • 1...Sd4
      • 2.Sxc3#
      • 2.Sd6#
  • Tries
    • 1.Rxe6+?
      • 1...Be5
        • 2.d6#
      • 1...Sfe5
        • 2.d6#
      • 1...Sge5
        • 2.d6#
      • 1...Re5!
  • Keys
    • 1.Qxc3!
      • threat
        • 2.Sd6#
      • 1...Bxc3+
        • 2.Sxc3#
      • 1...Rfe5
        • 2.Qxf3#
      • 1...Be5
        • 2.dxe6#
        • 2.d6#
      • 1...Sfe5
        • 2.Qd4#
      • 1...Sge5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(g);S_CUTR(f)::B(K)+P(G)
    • B(h);::S(F)
  • Tries
    • Try
      • R(J);CHECK,XR(g)
      • Vars
        • B(h);P_SPINB(h)::B(K)+P(G)
        • S(b);P_SPINS(b)::B(K)+P(G)
        • S(e);P_SPINS(e)::B(K)+P(G)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • Q(E);P_SPINQ(E),XP(a)
    • Threat
      • S(F)
    • Vars
      • B(h);CHECK,XQ(E)::S(F),XB(h)
      • R(f);N_PINQ(E),N_SPINR(g)::QAB1(E),XS(b)
      • S(b);N_GUARD,N_PINQ(E),N_SPINR(g),S_CUTB(h)::QAR1(E)
      • S(e);N_PINQ(E),N_SPINR(g)::QAR1(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).