MESON Chess Problem Database

Problem Display
PID: 146553 (B3r3/5bB1/2PPN1p1/1QPkr2N/4pR2/2p3n1/2Kn4/2b5 w - - 0 1)

Hartong, Jan

Probleemblad, 1952

B3r3/5bB1/2PPN1p1/1QPkr2N/4pR2/2p3n1/2Kn4/2b5

#2

10 + 10

102 Probleemblad 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sc7#
    • 1...Rg5
      • 2.Sc7#
    • 1...Rxh5
      • 2.Sc7#
    • 1...Sb1
      • 2.Qb3#
    • 1...Sdf1
      • 2.Qb3#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sf3
      • 2.Qb3#
    • 1...e3
      • 2.Sc7#
  • Tries
    • 1.Qd3+?
      • 1...Kxe6
        • 2.Rf6#
      • 1...exd3+!
    • 1.c7+?
      • 1...Kxe6
        • 2.Rf6#
      • 1...Rxa8!
  • Keys
    • 1.Rxe4!
      • threat
        • 2.Rxe5#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kxe6
        • 2.Rxe5#
      • 1...Rxe4
        • 2.Sc7#
      • 1...Rxh5
        • 2.Qd3#
      • 1...R5xe6
        • 2.Rd4#
      • 1...R8xe6
        • 2.c7#
      • 1...Bxe6
        • 2.Sf6#
      • 1...Sdxe4
        • 2.Qb3#
      • 1...Sgxe4
        • 2.Shf4#
      • 1...Rf5
        • 2.Qd3#
      • 1...Rg5
        • 2.Sf6#
        • 2.Qd3#
      • 1...Sf3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 5
  • Sets
    • R(g);::S(H)
    • R(g);XS(E)::S(H)
    • S(b);N_GUARD::QAB(C)
    • S(b);N_GUARD::QAB(C),XS(b)
    • P(e);::S(H)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);S_FLIGHT,XS(H)::R1(B)
      • Refutation
        • P(e);CHECK,XQ(C)
    • Try
      • P(F);CHECK
      • Vars
        • K(f);S_FLIGHT,XS(H)::R1(B)
      • Refutation
        • R(j);XB(J)
  • Actual
    • R(B);XP(e)
    • Threat
      • R1(B),XR(g)
    • Vars
      • K(f);S_FLIGHT,XR(B)::QAB1(C)
      • K(f);P_SPINR(g),S_FLIGHT,XS(H)::R1(B),XR(g)
      • R(g);SBLOCK,XR(B)::S(H)
      • R(g);XS(E)::QAR2(C)
      • R(g);SBLOCK,XS(H)::R1(B)
      • R(j);N_GUARD,SBLOCK,XS(H)::B(J)+P(F)
      • B(i);SBLOCK,XS(H)::S(E)
      • S(b);N_GUARD,SBLOCK,XR(B)::QAB(C)
      • S(d);SBLOCK,XR(B)::S(E)
      • R(g);::QAR2(C)
      • S(b);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAB1(C),XS(b)
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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).