MESON Chess Problem Database

Problem Display
PID: 11122 (1Q6/8/8/n7/1N1R4/k7/2K5/3B4 w - - 0 1)

Lebedev, Aleksandr N

Lebedev, Viacheslav Aleksandr

2nd HM., Shakhmaty v SSSR, 1936

1Q6/8/8/n7/1N1R4/k7/2K5/3B4

#2

5 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Kc1?
      • 1...Sc4
        • 2.Rd3#
      • 1...Sc6
        • 2.Rd3#
        • 2.Qg3#
      • 1...Sb7
        • 2.Qg3#
      • 1...Sb3+!
    • 1.Sa2?
      • threat
        • 2.Qb2#
      • 1...Kxa2
        • 2.Ra4#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb7!
    • 1.Sd3?
      • threat
        • 2.Qb2#
      • 1...Ka2
        • 2.Ra4#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb7!
    • 1.Sd5?
      • threat
        • 2.Qb2#
      • 1...Ka2
        • 2.Ra4#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb7!
    • 1.Sa6?
      • threat
        • 2.Qb2#
      • 1...Ka2
        • 2.Ra4#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb7!
    • 1.Sc6?
      • threat
        • 2.Qb2#
      • 1...Ka2
        • 2.Ra4#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb7!
    • 1.Qg3+?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Ka4!
    • 1.Qb5?
      • threat
        • 2.Qxa5#
      • 1...Sb7
        • 2.Rd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sc6
        • 2.Rd3#
      • 1...Sb3!
  • Keys
    • 1.Kb1!
      • threat
        • 2.Sc2#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sb7
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);N_GUARD::R(D)
        • S(b);N_GUARD::QAR(E)
      • Refutation
        • S(b);CHECK
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(E);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(E),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E),XS(b)
      • Vars
        • S(b);N_GUARD::R(D)
      • Refutation
        • S(b);
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • S(b);N_GUARD::R(D)
      • S(b);N_GUARD::QAR(E)
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).