MESON Chess Problem Database

Problem Display
PID: 139131 (1B2Q1nq/K2P4/b3p1B1/N2p2Pp/1P1k4/3r3R/N2b4/3R4 w - - 0 1)

Bakcsi, Gyorgy

2nd Prize, BCF 123. Ty., 1969-1970

1B2Q1nq/K2P4/b3p1B1/N2p2Pp/1P1k4/3r3R/N2b4/3R4

#2

11 + 9

56 The Problemist 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Sc6#
    • 1...Bb7
      • 2.Rxd3#
    • 1...Bc8
      • 2.Rxd3#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Sb3#
        • 2.Sc6#
      • 1...Bxb4
        • 2.Sb3#
      • 1...Bc4
        • 2.Sc6#
      • 1...Bb5
        • 2.Sb3#
      • 1...Bb7
        • 2.Sb3#
      • 1...Se7
        • 2.Sb3#
      • 1...Bxd3!
    • 1.Qxe6?
      • threat
        • 2.Qb6#
      • 1...Bxb4
        • 2.Qe3#
      • 1...Rc3
        • 2.Rh4#
      • 1...Qf6!
    • 1.Qf8?
      • threat
        • 2.Qc5#
      • 1...Bxb4
        • 2.Qf2#
      • 1...Rc3
        • 2.Qf4#
      • 1...Se7!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qc5#
      • 1...Bxb4
        • 2.Sb3#
      • 1...Bxc8
        • 2.Rxd3#
      • 1...Rc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(f);SBLOCK::S(E)
    • B(f);N_GUARD::R1(C),XR(b)
  • Tries
    • Try
      • B(G);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(D)::S(E)
        • B(f);::S(E)
        • S(h);::S(E)
      • Refutation
        • B(f);XB(G)
    • Try
      • Q(K);XP(g)
      • Threat
        • QAB(K)
      • Vars
        • B(a);N_GUARD,P_SPINR(b),XP(D)::QAB1(K)
        • R(b);P_SPINB(a)::R(C)
      • Refutation
        • Q(i);
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • B(a);N_GUARD,P_SPINR(b),XP(D)::QAB(K)
        • R(b);P_SPINB(a)::QAR2(K)
      • Refutation
        • S(h);
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • B(a);P_SPINR(b),XP(D)::S(E)
      • B(f);N_GUARD,XQ(K)::R1(C),XR(b)
      • R(b);N_GUARD,P_SPINB(a)::QAB1(K),XR(b)
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).