MESON Chess Problem Database

Problem Display
PID: 251332 (2B5/B3ppp1/2Pr3p/5n1r/Np1PkPNn/2p3P1/Q3P3/2K5 w - - 0 1)

Bantysh, Nikolai Ivanovich

Zadachi i Etyudi, 2004

2B5/B3ppp1/2Pr3p/5n1r/Np1PkPNn/2p3P1/Q3P3/2K5

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Sc5#
    • 1...Rd5
      • 2.Qc2#
    • 1...Se3
      • 2.Sf2#
    • 1...b3
      • 2.Sxc3#
  • Tries
    • 1.Ba6?
      • threat
        • 2.Bd3#
      • 1...Rxd4
        • 2.Sc5#
      • 1...b3
        • 2.Sxc3#
      • 1...Sxg3!
    • 1.Qc4?
      • threat
        • 2.Sc5#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxg3
        • 2.d5#
      • 1...Rd5
        • 2.Qd3#
      • 1...Se3
        • 2.Sf2#
      • 1...Sxd4!
  • Keys
    • 1.d5!
      • threat
        • 2.Sf2#
      • 1...Sxg3
        • 2.Qc4#
      • 1...b3
        • 2.Sxc3#
      • 1...Sd4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(g);SBLOCK,XP(F)::S(E)
    • R(g);SBLOCK::QAB(B)
    • S(e);SBLOCK::S(H)
    • P(b);N_GUARD::S(E),XP(a)
  • Tries
    • Try
      • B(K);
      • Threat
        • B(K)
      • Vars
        • R(g);SBLOCK,XP(F)::S(E)
        • P(b);N_GUARD::S(E),XP(a)
      • Refutation
        • S(e);XP(D)
    • Try
      • Q(B);
      • Threat
        • S(E)
      • Vars
        • R(g);OGATE,XP(I)::QAB(B),XR(g)
        • S(e);N_GUARD,XP(D)::QAR(B)+P(F)
        • R(g);SBLOCK::QAB1(B)
        • S(e);SBLOCK::S(H)
      • Refutation
        • S(e);P_SPINS(e),XP(F)
  • Actual
    • P(F);
    • Threat
      • S(H)
    • Vars
      • S(e);N_GUARD,XP(D)::QAR2(B)
      • P(b);N_GUARD::S(E),XP(a)
      • S(e);SBLOCK::S(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).