MESON Chess Problem Database

Problem Display
PID: 214738 (r1B1r1Rb/2P5/2Q4B/R1nNk2b/1K6/2P3p1/2p1Nq2/4n3 w - - 0 1)

Anonymous

Detroit Free Press (Centennial Ty.), 1877

r1B1r1Rb/2P5/2Q4B/R1nNk2b/1K6/2P3p1/2p1Nq2/4n3

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe8+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Bxe8!
  • Keys
    • 1.Sdf4!
      • threat
        • 2.Rg5#
      • 1...Qd4+
        • 2.cxd4#
      • 1...Qxf4+
        • 2.Bxf4#
      • 1...Rb8+
        • 2.cxb8Q#
        • 2.cxb8B#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...Qxe2
        • 2.Rxc5#
      • 1...Rxg8
        • 2.Qe6#
      • 1...Bxe2
        • 2.Sg6#
        • 2.Rxe8#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rf8
        • 2.Qe6#
      • 1...Bg4
        • 2.Sg6#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Bf6
        • 2.Qd5#
      • 1...Bg7
        • 2.Bxg7#
      • 1...Sf3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(J);CHECK,XR(i)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(F),XS(e)
      • Refutation
        • B(g);XR(J)
  • Actual
    • S(E);P_PINS(e)
    • Threat
      • R(J)
    • Vars
      • Q(c);CHECK,OGATE::P(B),XQ(c)
      • Q(c);CHECK,OGATE,XS(E)::B(G),XQ(c)
      • R(h);CHECK,OGATE::PXR(h)=Q
      • S(a);CHECK,N_GUARD::S(E),XS(a)
      • Q(c);N_GUARD,XS(A)::R(D),XS(e)
      • R(i);N_GUARD,XR(J)::QAR1(F)
      • R(i);N_GUARD::QAR1(F),XR(i)
      • R(i);N_GUARD::QAR1(F)
      • B(g);N_GUARD::S(E)
      • B(g);N_GUARD::S(E),XB(g)
      • B(j);SBLOCK::QAR1(F)
      • B(j);N_GUARD::B(G),XB(j)
      • S(a);N_GUARD::S(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).