MESON Chess Problem Database

Problem Display
PID: 179100 (8/3K2p1/8/N2Npn2/R3PbQ1/1RPkBr2/3p3n/1b1B4 w - - 0 1)

Hartong, Jan

3rd Prize, Magasinet, 1957

8/3K2p1/8/N2Npn2/R3PbQ1/1RPkBr2/3p3n/1b1B4

#2

10 + 9

3713 Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe2#
    • 1...Rg3
      • 2.Qe2#
    • 1...Rh3
      • 2.Qe2#
    • 1...Bxe3
      • 2.Sb4#
    • 1...Bg3
      • 2.c4#
    • 1...Bg5
      • 2.c4#
    • 1...Bh6
      • 2.c4#
  • Tries
    • 1.Qxf3?
      • threat
        • 2.Sb4#
        • 2.Qe2#
        • 2.c4#
      • 1...Bxe3
        • 2.Sb4#
        • 2.Qe2#
      • 1...Sxe3
        • 2.Sb4#
        • 2.Qe2#
      • 1...Ba2
        • 2.Sb4#
        • 2.Qe2#
      • 1...Bc2
        • 2.Sb4#
        • 2.Be2#
        • 2.Qe2#
      • 1...Sg3
        • 2.Sb4#
        • 2.c4#
      • 1...Sd4
        • 2.Sb4#
        • 2.cxd4#
      • 1...Sxf3!
    • 1.Qg2?
      • threat
        • 2.Qxd2#
        • 2.Qe2#
      • 1...Rxe3
        • 2.Sb4#
      • 1...Bxe3
        • 2.Qe2#
      • 1...Sxe3
        • 2.Qe2#
      • 1...Rf2
        • 2.c4#
      • 1...Sf1
        • 2.Qe2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...Sd4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qa6#
      • 1...Sxe3
        • 2.Sb4#
      • 1...Sd4
        • 2.cxd4#
      • 1...Sd6
        • 2.c4#

Anticipated by 92216(1952)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(e);OGATE::QAB1(G)
    • B(f);SBLOCK,XB(D)::S(I)
    • B(f);::R(B)+P(C)
  • Tries
    • Try
      • Q(G);XR(e)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);SBLOCK,XB(D)::S(I)
        • B(f);XB(D)::QAB1(G)
        • S(h);XB(D)::QAB1(G)
        • R(e);::R(B)+P(C)
        • S(c);::QAB1(G)
        • S(h);::QAR1(G),XP(b)
      • Refutation
        • S(h);
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • S(h);SBLOCK,XB(D)::S(I)
      • S(h);OGATE::R(B)+P(C),XS(h)
      • S(h);::R(B)+P(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).