MESON Chess Problem Database

Problem Display
PID: 110179 (B2RK3/brp2Qp1/3P4/R1nNk3/2Pn1p2/4pp2/8/B3N3 w - - 0 1)

Labai, Zoltan

3rd HM., Podtatranske noviny, 1981

B2RK3/brp2Qp1/3P4/R1nNk3/2Pn1p2/4pp2/8/B3N3

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxf4#
    • 1...Se4
      • 2.Sd3#
      • 2.Sxf3#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Sd3#
      • 1...Sc2
        • 2.Sxf3#
      • 1...Se2
        • 2.Sxf3#
      • 1...Sb3
        • 2.Sxf3#
      • 1...Sb5
        • 2.Sxf3#
      • 1...Sf5
        • 2.Sxf3#
      • 1...Sc6
        • 2.Sxf3#
      • 1...Se6
        • 2.Sxf3#
      • 1...Rb5!
    • 1.Se7?
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Rb2
        • 2.Sd3#
        • 2.Sg6#
      • 1...g6!
    • 1.Bxd4+?
      • 1...Ke4
        • 2.Qxf4#
      • 1...Kxd4!
    • 1.Qg6?
      • threat
        • 2.Sxf3#
      • 1...f2
        • 2.Sf3#
      • 1...Rb2!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Qxf4#
      • 1...gxf6!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Qe6#
      • 1...Ke4
        • 2.Qd5#
      • 1...Rxc7
        • 2.Sd3#
        • 2.Sxf3#
      • 1...Rb2
        • 2.Sd3#
      • 1...Rb5
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINS(c),P-FLIGHT::QAR1(G),XP(d)
  • Tries
    • Try
      • S(E);N_PINS(c),P_PINS(e)
      • Threat
        • S(B)
      • Vars
        • S(c);N_GUARD::S(B),XP(b)
        • S(c);N_GUARD,N_SPINS(e)::S(B),XP(b)
      • Refutation
        • R(h);N_SPINS(e)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(f);N_SPINS(c),P-FLIGHT,P_SPINR(h)::QAB1(G)
      • Refutation
        • P(j);
    • Try
      • B(A);CHECK,XS(c)
      • Vars
        • K(f);P-FLIGHT::QAR1(G),XP(d)
      • Refutation
        • K(f);S_FLIGHT,XB(A)
    • Try
      • Q(G);
      • Threat
        • S(B),XP(b)
      • Vars
        • P(b);::S(B)
      • Refutation
        • R(h);N_SPINS(c)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(j);XQ(G)
  • Actual
    • S(E);XP(i)
    • Threat
      • QAR1(G)
    • Vars
      • K(f);N_SPINS(c),P-FLIGHT,P_SPINR(h)::QAB1(G)
      • R(h);N_SPINS(c),P_SPINS(e)::S(B)
      • R(h);::S(B),XP(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).