MESON Chess Problem Database

Problem Display
PID: 255616 (3q3b/r7/1BP1B3/r1n1NPp1/pN1kP1R1/Kb2pP2/1P3p1Q/8 w - - 0 1)

Labai, Zoltan

2nd Comm., Astafyeva-30 JT (Kudesnik), 2021

3q3b/r7/1BP1B3/r1n1NPp1/pN1kP1R1/Kb2pP2/1P3p1Q/8

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.exd5#
    • 1...Ba2
      • 2.Sc2#
    • 1...Bc2
      • 2.Sxc2#
    • 1...Bc4
      • 2.Sc2#
    • 1...Bd5
      • 2.Sc2#
      • 2.exd5#
    • 1...Bxe6
      • 2.Sc2#
  • Tries
    • 1.Sed3?
      • threat
        • 2.e5#
      • 1...Qd5
        • 2.exd5#
      • 1...Bd5
        • 2.exd5#
      • 1...e2
        • 2.Qxf2#
      • 1...Be5
        • 2.Qxe5#
      • 1...Qxb6!
    • 1.Sc4?
      • threat
        • 2.e5#
      • 1...Qxb6
        • 2.Qd6#
      • 1...Qd5
        • 2.exd5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bc2!
    • 1.Sf7?
      • threat
        • 2.e5#
      • 1...Qxb6
        • 2.Qxh8#
      • 1...Qd5
        • 2.exd5#
      • 1...Bd5
        • 2.exd5#
      • 1...e2
        • 2.Qxf2#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bc2!
  • Keys
    • 1.Sd7!
      • threat
        • 2.e5#
      • 1...Qxb6
        • 2.Qxh8#
      • 1...Bd5
        • 2.exd5#
      • 1...e2
        • 2.Qxf2#
      • 1...Bc2
        • 2.Qd6#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(j);OGATE::R(G)+P(F),XQ(j)
    • B(b);N_GUARD::S(E)
    • B(b);N_GUARD::S(E),XB(b)
    • B(b);N_GUARD,XB(L)::S(E)
  • Tries
    • Try
      • S(H);
      • Threat
        • R(G)+P(F)
      • Vars
        • Q(j);OGATE::R(G)+P(F),XQ(j)
        • B(b);OGATE::R(G)+P(F),XB(b)
        • P(c);OGATEB::QAB(B),XP(a)
        • B(k);N_GUARD::QAB1(B),XB(k)
      • Refutation
        • Q(j);N_SPINS(g),XB(J)
    • Try
      • S(H);
      • Threat
        • R(G)+P(F)
      • Vars
        • Q(j);N_GUARD,N_SPINS(g),XB(J)::QAR2(B)
        • Q(j);OGATE::R(G)+P(F),XQ(j)
        • B(k);N_GUARD::QAB1(B),XB(k)
      • Refutation
        • B(b);
    • Try
      • S(H);
      • Threat
        • R(G)+P(F)
      • Vars
        • Q(j);N_GUARD,N_SPINS(g),XB(J)::QAB(B),XB(k)
        • Q(j);OGATE::R(G)+P(F),XQ(j)
        • B(b);OGATE::R(G)+P(F),XB(b)
        • P(c);OGATEB::QAB(B),XP(a)
        • B(k);N_GUARD::QAB1(B),XB(k)
      • Refutation
        • B(b);
  • Actual
    • S(H);
    • Threat
      • R(G)+P(F)
    • Vars
      • Q(j);N_GUARD,N_SPINS(g),XB(J)::QAB(B),XB(k)
      • B(b);OGATE::R(G)+P(F),XB(b)
      • P(c);OGATEB::QAB(B),XP(a)
      • B(b);N_GUARD::QAR2(B)
      • B(k);N_GUARD::QAB1(B),XB(k)
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).