MESON Chess Problem Database

Problem Display
PID: 219908 (5b2/5N1K/2n2p2/3R4/4k3/4P1p1/B3Qn2/8 w - - 0 1)

Bajtay, Jozsef

Riczu, Lajos

Land og Folk, 1977

5b2/5N1K/2n2p2/3R4/4k3/4P1p1/B3Qn2/8

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sxd6#
    • 1...Bh6
      • 2.Sd6#
    • 1...Bg7
      • 2.Sd6#
    • 1...Se7
      • 2.Sd6#
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Rd4+?
      • 1...Kf5
        • 2.Rf4#
        • 2.Qf3#
        • 2.Qh5#
      • 1...Sxd4!
    • 1.Qxf2?
      • threat
        • 2.Qf4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Bh6
        • 2.Sd6#
      • 1...gxf2!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Rf4#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Bh6
        • 2.Sd6#
      • 1...Sd3
        • 2.Qf3#
      • 1...Sh3
        • 2.Bb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(f);N_GUARD::S(E),XB(f)
    • B(f);N_GUARD::S(E)
    • S(d);S_CUTB(f)::S(E)
    • P(e);N_GUARD::S(E)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • S(d);XR(D)
    • Try
      • Q(B);XS(a)
      • Threat
        • QAR1(B)
      • Vars
        • S(d);N_GUARD::R1(D),XS(d)
        • B(f);N_GUARD::S(E),XB(f)
        • B(f);N_GUARD::S(E)
      • Refutation
        • P(b);XQ(B)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(c);S_FLIGHT,XR(D)::QAR2(B)
      • B(f);N_GUARD::S(E),XB(f)
      • B(f);N_GUARD::S(E)
      • S(a);SBLOCK::QAB1(B)
      • S(a);N_GUARD::B(A)
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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).