MESON Chess Problem Database

Problem Display
PID: 31817 (8/1r1N2KN/5P1R/8/Q3P1k1/8/4P2P/b1B4n w - - 0 1)

Bajtay, Jozsef

De Problemist, 1927

8/1r1N2KN/5P1R/8/Q3P1k1/8/4P2P/b1B4n

#2

10 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Se5#
    • 1...Rxd7+
      • 2.Qxd7#
    • 1...Bxf6+
      • 2.Sxf6#
    • 1...Sg3
      • 2.h3#
  • Tries
    • 1.Bg5?
      • threat
        • 2.Rh4#
      • 1...Rxd7+
        • 2.Qxd7#
      • 1...Bxf6+!
  • Keys
    • 1.Qd1!
      • threat
        • 2.e3#
      • 1...Rxd7+
        • 2.Qxd7#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...Rb2
        • 2.Se5#
      • 1...Sf2
        • 2.Qg1#
      • 1...Sg3
        • 2.h3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);N_PINP(F),N_PINS(H)::S(H)
    • R(d);CHECK,OGATE,XS(H)::QAB(D),XR(d)
    • B(a);CHECK,XP(F)::S(J),XB(a)
    • S(b);SBLOCK::P(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(G)
      • Vars
        • R(d);CHECK,OGATE,XS(H)::QAB(D),XR(d)
      • Refutation
        • B(a);CHECK,XP(F)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+P(B)
    • Vars
      • R(d);CHECK,OGATE,XS(H)::QAB(D),XR(d)
      • B(a);CHECK,XP(F)::S(J),XB(a)
      • R(d);N_PINP(F),N_PINS(H)::S(H)
      • S(b);N_GUARD::QAR(D)
      • S(b);SBLOCK::P(C)
HTML5 logo

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).