MESON Chess Problem Database

Problem Display
PID: 133410 (3Nn3/1r2Rp2/pP1B1p2/R1Pk4/3r4/1PpN1P2/Q5B1/5Kb1 w - - 0 1)

Lincoln, Robert A

The Problemist, 2009

3Nn3/1r2Rp2/pP1B1p2/R1Pk4/3r4/1PpN1P2/Q5B1/5Kb1

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Re5#
  • Keys
    • 1.Be5!
      • threat
        • 2.c6#
      • 1...Rxd3
        • 2.b4#
      • 1...Rxb6
        • 2.cxb6#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Ra4
        • 2.bxa4#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Rc4
        • 2.bxc4#
      • 1...Re4
        • 2.fxe4#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Rg4
        • 2.fxg4#
      • 1...Rh4
        • 2.f4#
      • 1...Sd6
        • 2.cxd6#
      • 1...Sc7
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD::R1(K)
  • Actual
    • B(J);
    • Threat
      • R(G)+P(H)
    • Vars
      • R(c);N_GUARD,XS(E)::QAB(B)+P(D)
      • R(g);OGATE,XP(I)::R(G)+P(H),XR(g)
      • P(f);OGATE,XB(J)::R1(K),XP(f)
      • R(c);OGATE::QAB(B)+P(D),XR(c)
      • R(c);N_GUARD::S(E),XR(c)
      • R(c);OGATE::P(D),XR(c)
      • R(c);OGATE::P(F),XR(c)
      • R(c);N_GUARD,P_PINP(F)::S(E),XR(c)
      • R(c);OGATE::B(C)+P(F),XR(c)
      • R(c);N_GUARD::B(C)+P(F)
      • S(i);OGATE::R(G)+P(H),XS(i)
      • S(i);N_GUARD,S_CUTR(g)::R(K)
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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).