MESON Chess Problem Database

Problem Display
PID: 194501 (1n6/2bb4/8/2BPk1PN/1N3R1P/5p1P/K5nQ/8 w - - 0 1)

Labai, Zoltan

4th HM., 07. World Cup, 2019

1n6/2bb4/8/2BPk1PN/1N3R1P/5p1P/K5nQ/8

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Bd4#
    • 1...Se1
      • 2.Qb2#
    • 1...Se3
      • 2.Qb2#
    • 1...Sxf4
      • 2.Qxf4#
    • 1...Sxh4
      • 2.Qb2#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sd3#
      • 1...Bb5
        • 2.Sg4#
      • 1...Bf5
        • 2.Re4#
      • 1...Se1
        • 2.Rxf3#
      • 1...Sxf4!
    • 1.Rxf3+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke4!
    • 1.Rc4+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kf5!
    • 1.Rd4+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kf5!
    • 1.Rg4+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kf5!
    • 1.Rf6+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke4!
    • 1.Rf7+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke4!
    • 1.Rf8+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Re4#
      • 1...Kxf4
        • 2.Sd3#
      • 1...Sxf4
        • 2.Qb2#
      • 1...Bf5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(d);SBLOCK::B(G)
    • S(a);OGATE::QAB(B)
    • S(a);OGATE,P_SPINS(a),XR(E)::QAB1(B),XS(a)
    • S(a);OGATE,XP(F)::QAB(B)
  • Tries
    • Try
      • S(J);
      • Threat
        • S(D)
      • Vars
        • B(e);N_GUARD::S(J)
        • B(e);SBLOCK::QAB(B)+R(E),DCHECK
        • S(a);N_GUARD::QAB(B)+R(E),XP(b)
      • Refutation
        • S(a);P_SPINS(a),XR(E)
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(J);
    • Threat
      • R1(E)
    • Vars
      • K(c);S_FLIGHT,XR(E)::S(D)
      • S(a);OGATE,SBLOCK,XR(E)::QAB(B)
      • B(e);N_GUARD::R1(E),XB(e)
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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).