MESON Chess Problem Database

Problem Display
PID: 267741 (8/4p3/8/3R1N1p/RBp1k3/1p2N1PK/p2P2P1/bb1Qn3 w - - 0 1)

van Dijk, Johannes

El Diluvio, 1932

8/4p3/8/3R1N1p/RBp1k3/1p2N1PK/p2P2P1/bb1Qn3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qf3#
    • 1...Sd3
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
      • 2.gxf3#
    • 1...c3
      • 2.Ba3#
      • 2.Bxc3#
      • 2.Ba5#
      • 2.Bc5#
      • 2.Bd6#
      • 2.Bxe7#
    • 1...h4
      • 2.Qg4#
    • 1...e5
      • 2.Sd6#
    • 1...e6
      • 2.Sd6#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Rxc4#
      • 1...Bd3
        • 2.Re5#
      • 1...Sc2
        • 2.Qf3#
        • 2.d3#
      • 1...Sf3
        • 2.Qxf3#
        • 2.gxf3#
      • 1...Bxc3!
    • 1.d3+?
      • 1...Sxd3
        • 2.Qf3#
      • 1...cxd3
        • 2.Bc3#
      • 1...Bxd3!
  • Keys
    • 1.d4!
      • threat
        • 2.Re5#
      • 1...Bxd4
        • 2.Qxd4#
      • 1...cxd4 ep
        • 2.Bc3#
      • 1...Sd3
        • 2.Qf3#
      • 1...Sf3
        • 2.gxf3#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAB1(A)
    • P(h);N_GUARD::QAR2(A)
    • P(i);N_GUARD::S(J)
  • Tries
    • Try
      • B(H);P_PINP(f)
      • Threat
        • R(G),XP(f)
      • Vars
        • B(b);SBLOCK::R1(I)
      • Refutation
        • B(a);XB(H)
    • Try
      • P(B);CHECK
      • Vars
        • S(c);XP(B)::QAB1(A)
        • P(f);S_CUTB(b),S_CUTS(c),XP(B)::R(G)+B(H)
      • Refutation
        • B(b);XP(B)
  • Actual
    • P(B);
    • Threat
      • R1(I)
    • Vars
      • B(a);OGATE,XP(B)::QAR1(A),XB(a)
      • P(f);EP,OGATEB,XP(B)::R(G)+B(H)
      • S(c);N_GUARD,SBLOCK::QAB1(A)
      • S(c);OGATE::P(C),XS(c)
      • P(i);::R1(I),XP(i)
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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).