MESON Chess Problem Database

Problem Display
PID: 264640 (3q1B2/4rr2/p7/n1PpR1Q1/3kN3/1bR2pK1/2P5/1N6 w - - 0 1)

Sukhodolov, Nikolai

Zadachi i Etyudi, 2009

3q1B2/4rr2/p7/n1PpR1Q1/3kN3/1bR2pK1/2P5/1N6

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qe3#
    • 1...Sc4
      • 2.Rd3#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qe3#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Sc4
        • 2.Rxd5#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rg7!
  • Keys
    • 1.Sed2!
      • threat
        • 2.Qe3#
      • 1...Rxe5
        • 2.Rd3#
      • 1...Sc4
        • 2.Sxb3#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rg7
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK,XR(G)::QAB1(H)
    • S(d);SBLOCK::R1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(H)
      • Vars
        • R(g);SBLOCK,XR(G)::QAR2(H)
        • S(d);S_CUTB(a)::R1(G),XP(e)
        • R(h);N_GUARD::QAR2(H),XR(h)
      • Refutation
        • R(h);P_PINQ(H)
  • Actual
    • S(E);
    • Threat
      • QAB1(H)
    • Vars
      • R(g);XR(G)::R1(C)
      • S(d);N_GUARD::S(E),XB(a)
      • R(h);N_GUARD::QAR2(H),XR(h)
      • R(h);N_GUARD,P_PINQ(H)::S(E),XP(b)
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).