MESON Chess Problem Database

Problem Display
PID: 255832 (8/8/Kp1Pp3/1N2R3/1Pk3p1/p3r1p1/P3P1P1/4B2Q w - - 0 1)

Lider, Valentin Viktorovich

Probleemblad, 1984

8/8/Kp1Pp3/1N2R3/1Pk3p1/p3r1p1/P3P1P1/4B2Q

#2

10 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qg1?
      • 1...Rxe2
        • 2.Qd4#
      • 1...Rxe5
        • 2.Qd4#
      • 1...Rc3
        • 2.Qd4#
      • 1...Rb3
        • 2.Qd4#
      • 1...Rf3
        • 2.Qd4#
      • 1...Re4
        • 2.Sxa3#
      • 1...Rd3!
    • 1.Qh7?
      • threat
        • 2.Qc7#
      • 1...Rxe5
        • 2.Qd3#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rxe2!
  • Keys
    • 1.Qf1!
      • 1...Rxe2
        • 2.Qxe2#
      • 1...Rxe5
        • 2.e4#
      • 1...Rc3
        • 2.Qf4#
      • 1...Rb3
        • 2.Qf4#
      • 1...Rd3
        • 2.exd3#
      • 1...Rf3
        • 2.exf3#
      • 1...Re4
        • 2.e3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • R(b);OGATE,XP(D)::QAR1(B)
        • R(b);OGATE,XR(H)::QAR1(B)
        • R(b);OGATE::QAR1(B)
        • R(b);N_GUARD::S(G),XP(a)
      • Refutation
        • R(b);
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • R(b);N_GUARD,XR(H)::QAB1(B)
        • R(b);N_GUARD::QAR2(B)
      • Refutation
        • R(b);XP(D)
  • Actual
    • Q(B);
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(D)::QAB(B),XR(b)
      • R(b);OGATE,XR(H)::QAB(B)+P(D)
      • R(b);N_GUARD::QAR(B)
      • R(b);OGATE::P(D),XR(b)
      • R(b);OGATE::QAB(B)+P(D),XR(b)
      • R(b);OGATE::QAB(B)+P(D)
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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).