MESON Chess Problem Database

Problem Display
PID: 99999 (1b1NB3/1p2Qp2/bP1n1p2/B1k5/PR1p1N2/8/4p3/4K3 w - - 0 1)

Katko, Imre

Magyar Sakkvilag, 1932

1b1NB3/1p2Qp2/bP1n1p2/B1k5/PR1p1N2/8/4p3/4K3

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sxb7#
    • 1...Bc4
      • 2.Sxb7#
    • 1...Bb5
      • 2.Sxb7#
    • 1...Ba7
      • 2.Qc7#
    • 1...Bc7
      • 2.Qxc7#
    • 1...d3
      • 2.Qe3#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Rc4+?
      • 1...Bxc4
        • 2.Sxb7#
      • 1...Kxc4!
    • 1.Qe6?
      • threat
        • 2.Qd5#
      • 1...fxe6
        • 2.Sdxe6#
      • 1...Bc4!
  • Keys
    • 1.Bxf7!
      • 1...Bd3
        • 2.Sxd3#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bb5
        • 2.Rxb5#
      • 1...Ba7
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...d3
        • 2.Qe3#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::S(H),XP(g)
    • B(i);N_GUARD::QAR2(G)
    • B(i);N_GUARD::QAR2(G),XB(i)
    • P(b);OGATEB::QAB(G)
    • P(f);N_GUARD::QAR2(G)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(d);SBLOCK,XR(C)::S(H),XP(g)
      • Refutation
        • K(c);N_SPINS(e),P-FLIGHT,XR(C)
    • Try
      • Q(G);N_PINS(e)
      • Threat
        • QAR1(G)
      • Vars
        • P(h);XQ(G)::S(H),XP(h)
      • Refutation
        • B(d);
  • Actual
    • B(I);XP(h)
    • Vars
      • B(d);N_GUARD::S(D),XB(d)
      • B(d);N_GUARD::R1(C),XB(d)
      • B(i);N_GUARD::QAR2(G)
      • B(i);N_GUARD::QAR2(G),XB(i)
      • P(b);OGATEB::QAB(G)
      • P(f);N_GUARD::QAR2(G)
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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).