MESON Chess Problem Database

Problem Display
PID: 119820 (4R3/1Kp5/B2P1bn1/3k1Ppn/1P4N1/1p3bN1/1Q2P3/r7 w - - 0 1)

Mach, Julius Zdenek

Nove parizske mody, 1901

4R3/1Kp5/B2P1bn1/3k1Ppn/1P4N1/1p3bN1/1Q2P3/r7

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Qd2#
    • 1...Bd8
      • 2.Qd2#
    • 1...cxd6
      • 2.Se3#
  • Tries
    • 1.Sxf6+?
      • 1...Sxf6
        • 2.Qd2#
      • 1...Kxd6+!
    • 1.Qxf6?
      • threat
        • 2.Se3#
      • 1...Bxg4
        • 2.e4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sxf6!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Se3#
      • 1...Bxg4
        • 2.e4#
      • 1...Bxb2
        • 2.dxc7#
      • 1...Bxd8
        • 2.Qd2#
      • 1...Sxg3
        • 2.Sxf6#
      • 1...Bc3
        • 2.dxc7#
      • 1...Bd4
        • 2.Qxb3#
        • 2.dxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::QAR(A)
    • P(i);SBLOCK,XP(H)::S(E)
  • Tries
    • Try
      • S(E);CHECK,XB(g)
      • Vars
        • S(f);XS(E)::QAR(A)
      • Refutation
        • K(d);CHECK,P-FLIGHT,XP(H)
    • Try
      • Q(A);XB(g)
      • Threat
        • S(E)
      • Vars
        • B(c);N_GUARD,XS(E)::P(B)
        • S(h);N_GUARD::QAR1(A),XS(h)
      • Refutation
        • S(f);XQ(A)
  • Actual
    • R(J);
    • Threat
      • S(E)
    • Vars
      • B(c);N_GUARD,XS(E)::P(B)
      • B(g);N_GUARD,XQ(A)::R(J)+P(H),XP(i)
      • B(g);N_GUARD,XR(J)::QAR(A)
      • S(f);N_GUARD,XS(C)::S(E),XB(g)
      • B(g);N_GUARD::R(J)+P(H),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).