MESON Chess Problem Database

Problem Display
PID: 254898 (B7/2pp2BK/2r3p1/pR4p1/Rp2k1Pn/2b1N3/2P1nQ2/1N2r3 w - - 0 1)

Jonker, Geert

Probleemblad, 1946

B7/2pp2BK/2r3p1/pR4p1/Rp2k1Pn/2b1N3/2P1nQ2/1N2r3

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sd2#
    • 1...Bb2
      • 2.Sd2#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bd4
      • 2.Sd2#
    • 1...Sc1
      • 2.Sxc3#
    • 1...Sg1
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Re5#
    • 1...Sf4
      • 2.Sxc3#
  • Tries
    • 1.Bxc6+?
      • 1...d5
        • 2.Bxd5#
      • 1...dxc6!
    • 1.Rbxb4+?
      • 1...Bxb4
        • 2.Sd2#
      • 1...Bd4
        • 2.Sd2#
      • 1...Sd4
        • 2.Sxc3#
      • 1...axb4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qe3#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Bd2
        • 2.Sxd2#
        • 2.Sf6#
      • 1...Bd4
        • 2.Sd2#
      • 1...Sc1
        • 2.Sdxc3#
      • 1...Sg1
        • 2.Sdxc3#
      • 1...Sg3
        • 2.Sdxc3#
      • 1...Sd4
        • 2.Sf6#
      • 1...Sf4
        • 2.Sdxc3#
      • 1...Sf5
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD::S(A)
    • B(c);N_GUARD::S(A),XB(c)
    • B(c);N_GUARD,N_SPINP(d)::S(A)
    • S(b);N_GUARD::S(A),XB(c)
    • S(b);N_SPINP(d),SBLOCK,S_CUTB(c)::R1(G)
  • Tries
    • Try
      • B(J);CHECK,XR(i)
      • Vars
        • P(l);::B(J),XP(l)
      • Refutation
        • P(l);XB(J)
    • Try
      • R(G);CHECK,XP(d)
      • Vars
        • B(c);P_SPINB(c),XR(G)::S(A)
        • B(c);P_SPINB(c)::S(A)
        • S(b);P_SPINS(b)::S(A),XB(c)
      • Refutation
        • P(g);P_SPINP(g),XR(G)
  • Actual
    • S(D);N_PINR(i)
    • Threat
      • QAR1(C)
    • Vars
      • S(f);N_GUARD::QAB(C),XS(f)
      • B(c);N_GUARD,N_SPINP(d)::S(A)
      • S(b);N_GUARD::S(D),XB(c)
      • S(b);N_SPINP(d),S_CUTB(c)::S(D)
      • S(f);N_GUARD::QAB(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).