MESON Chess Problem Database

Problem Display
PID: 6483 (4R3/2R3qB/2r3P1/4B2Q/bNN1kP2/2K1pp2/8/8 w - - 0 1)

Loshinski, Lev Ilich

Umnov, Evgeny Ivanovich

3rd Prize, Tijdschrift vd NSB, 1929

4R3/2R3qB/2r3P1/4B2Q/bNN1kP2/2K1pp2/8/8

#2

10 + 6

35 L'Italia Scacchistica 1930
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Qxe5#
    • 1...Qh6
      • 2.Bd6#
    • 1...Qxg6
      • 2.Bd6#
    • 1...Rxc4+
      • 2.Rxc4#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rxg6
      • 2.Sd6#
  • Tries
    • 1.Rd8?
      • threat
        • 2.Rd4#
      • 1...Qxe5+
        • 2.Qxe5#
      • 1...Rxc4+
        • 2.Rxc4#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Qd7!
  • Keys
    • 1.Qg4!
      • threat
        • 2.f5#
      • 1...Qxe5+
        • 2.Rxe5#
        • 2.fxe5#
      • 1...Rxc4+
        • 2.Rxc4#
      • 1...Qxg6
        • 2.Bd6#
      • 1...Rxg6
        • 2.Sd6#
      • 1...Qh6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::QAR1(F),XQ(f)
    • Q(f);N_PINB(E)::R(J)+B(E)
    • Q(f);N_PINB(E),P_SPINQ(f),XP(G)::R(J)+B(E)
    • R(e);CHECK,OGATE,XS(C)::R(H),XR(e)
    • R(e);N_PINS(C)::S(C),XR(e)
    • R(e);N_PINS(C),P_SPINR(e),XP(G)::S(C)
  • Tries
    • Try
      • R(J);
      • Threat
        • R1(J)
      • Vars
        • Q(f);CHECK,OGATE,XB(E)::QAR1(F),XQ(f)
        • R(e);CHECK,OGATE,XS(C)::R(H),XR(e)
        • R(e);N_PINS(C)::S(C),XR(e)
      • Refutation
        • Q(f);N_PINB(E)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+P(D)
    • Vars
      • R(e);CHECK,OGATE,XS(C)::R(H),XR(e)
      • Q(f);N_PINB(E),P_SPINQ(f),XP(G)::R(J)+B(E)
      • R(e);N_PINS(C),P_SPINR(e),XP(G)::S(C)
      • Q(f);N_PINB(E)::R(J)+B(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).