MESON Chess Problem Database

Problem Display
PID: 231499 (1nQ1b3/1r2B2N/1p1p1P2/4n2p/R3BP1k/4N1pp/8/K7 w - - 0 1)

Bajtay, Jozsef

Magyar Sakkvilag, 1927

1nQ1b3/1r2B2N/1p1p1P2/4n2p/R3BP1k/4N1pp/8/K7

#2

9 + 10

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd7
      • 2.f7#
    • 1...Sg4
      • 2.Sf5#
    • 1...h2
      • 2.Sg2#
  • Tries
    • 1.Qg4+?
      • 1...Sxg4
        • 2.Sf5#
      • 1...hxg4!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Qxh3#
      • 1...hxg2
        • 2.Sxg2#
      • 1...Rd7
        • 2.fxe5#
      • 1...Bd7
        • 2.f7#
      • 1...Sg4
        • 2.Sf5#
      • 1...Sed7
        • 2.f5#
      • 1...Sbd7
        • 2.fxe5#
      • 1...h2
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(j);S_CUTR(h)::B(G)+P(F)
    • S(d);SBLOCK::S(B)
    • P(b);N_GUARD::S(B)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • S(d);SBLOCK,XQ(I)::S(B)
      • Refutation
        • P(e);XQ(I)
  • Actual
    • B(D);
    • Threat
      • QAR1(I),XP(b)
    • Vars
      • P(b);XB(D)::S(B),XP(b)
      • R(h);S_CUTB(j)::R(C)+P(E),XS(d)
      • B(j);S_CUTR(h)::B(G)+P(F)
      • S(d);SBLOCK::S(B)
      • S(d);N_GUARD,S_CUTB(j)::R(C)+P(E)
      • S(i);S_CUTB(j)::R(C)+P(E),XS(d)
      • P(b);::QAR1(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).