MESON Chess Problem Database

Problem Display
PID: 204493 (4N1B1/p2rbRr1/K1p1p1N1/2pkB2b/p1p2R2/Q3n3/8/6q1 w - - 0 1)

Boros, Sandor

Kolozs, M

Nepszava, 1925

4N1B1/p2rbRr1/K1p1p1N1/2pkB2b/p1p2R2/Q3n3/8/6q1

#2

8 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sc7#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Rd8
      • 2.Sc7#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bf8
      • 2.Sf6#
    • 1...Sg4
      • 2.Qf3#
  • Tries
    • 1.Qxc5+?
      • 1...Bxc5
        • 2.Sf6#
      • 1...Kxc5!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qxc5#
      • 1...Rxd6
        • 2.Sc7#
      • 1...Bxd6
        • 2.Sf6#
      • 1...e5
        • 2.Rxg7#
      • 1...Sd1
        • 2.R7f5#
      • 1...Sf1
        • 2.R7f5#
      • 1...Sc2
        • 2.R7f5#
      • 1...Sg2
        • 2.R7f5#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sf5
        • 2.R7xf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(k);N_GUARD::S(G)
    • R(k);N_GUARD::S(G),XR(k)
    • B(l);N_GUARD::S(G)
    • B(l);N_GUARD::S(G),XB(l)
    • S(b);OGATE::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK,XP(e)
      • Vars
        • B(l);SBLOCK,XQ(A)::S(G)
      • Refutation
        • K(f);P-FLIGHT,XQ(A)
  • Actual
    • B(C);
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • R(k);N_GUARD,SBLOCK,XB(C)::S(G)
      • B(l);N_GUARD,SBLOCK,XB(C)::S(G)
      • P(i);OGATEB::B(H)+R(F),XR(m)
      • S(b);N_GUARD::R(F)
      • S(b);OGATE::QAB(A)
      • S(b);N_GUARD::R(F),XS(b)
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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).