MESON Chess Problem Database

Problem Display
PID: 276182 (R1R3B1/2N4p/2NB4/P2n3r/p1k1n1Q1/3b4/K1pPP3/2b5 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 2024

R1R3B1/2N4p/2NB4/P2n3r/p1k1n1Q1/3b4/K1pPP3/2b5

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bxd5#
    • 1...Rh2
      • 2.Bxd5#
    • 1...Rh3
      • 2.Bxd5#
    • 1...Rh4
      • 2.Bxd5#
    • 1...Rh6
      • 2.Bxd5#
    • 1...Bxe2
      • 2.Qxe2#
      • 2.Qxe4#
  • Tries
    • 1.Se5+?
      • 1...Kd4
        • 2.Se6#
      • 1...Rxe5!
    • 1.Sa7?
      • threat
        • 2.Scb5#
      • 1...Kd4
        • 2.Se6#
      • 1...Bxe2
        • 2.Qxe4#
      • 1...Ba3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sca7#
      • 1...Kxb5
        • 2.Sd4#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...Ba3
        • 2.Sxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(h);N_GUARD::B(K),XS(g)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT::S(H)
      • Refutation
        • R(h);XS(F)
    • Try
      • S(F);
      • Threat
        • R(J)+S(H)
      • Vars
        • K(e);P-FLIGHT,S_CUTS(g)::S(H)
        • B(c);N_GUARD,XP(C)::QAR2(D),XS(f)
      • Refutation
        • B(a);
  • Actual
    • S(H);
    • Threat
      • R(J)+S(F)
    • Vars
      • K(e);N_SPINS(f),S_CUTS(f),S_FLIGHT,XS(H)::S(F)
      • B(c);OGATE,XP(C)::QAB(D),XB(c)
      • B(a);N_GUARD::S(H),XB(a)
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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).