MESON Chess Problem Database

Problem Display
PID: 230145 (2RK1R1B/7P/6p1/4n1N1/N1pkB2r/4r3/6p1/6Q1 w - - 0 1)

Pikhurov, Dimitry Egorovich

Zadachi i Etyudi, 2000

2RK1R1B/7P/6p1/4n1N1/N1pkB2r/4r3/6p1/6Q1

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Ke7?
      • threat
        • 2.Rcd8#
        • 2.Rfd8#
      • 1...c3
        • 2.Rfd8#
      • 1...Rxh7+!
    • 1.Rc5?
      • threat
        • 2.Bxe5#
        • 2.Rd5#
      • 1...c3
        • 2.Bxe5#
      • 1...Rxe4!
    • 1.Rf2?
      • threat
        • 2.Rd2#
      • 1...Re2
        • 2.Rxe2#
      • 1...c3!
    • 1.Rf4?
      • threat
        • 2.Sf3#
        • 2.Se6#
      • 1...Rh3
        • 2.Se6#
      • 1...Rxf4!
    • 1.Qa1+?
      • 1...Rc3
        • 2.Qxc3#
      • 1...c3!
    • 1.Qc1?
      • threat
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Rexe4
        • 2.Qd2#
      • 1...Rhxe4
        • 2.Qxc4#
      • 1...Re1
        • 2.Rxc4#
        • 2.Qd2#
        • 2.Qc3#
      • 1...Re2
        • 2.Rxc4#
        • 2.Qc3#
      • 1...Ra3
        • 2.Rxc4#
      • 1...Rb3
        • 2.Rxc4#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Rd3
        • 2.Rxc4#
      • 1...Rf3
        • 2.Rxc4#
      • 1...Rg3
        • 2.Rxc4#
      • 1...Reh3
        • 2.Rxc4#
      • 1...c3!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rd6#
      • 1...Sc6+
        • 2.Rfxc6#
      • 1...Sf7+
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::R(H)
      • Refutation
        • R(e);CHECK,XP(E)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::B(I),XS(f)
      • Refutation
        • R(e);XB(C)
    • Try
      • R(H);N_PINR(b)
      • Threat
        • R(H)
      • Vars
        • R(b);OGATEB::QAB(A)+R(H),XR(b)
      • Refutation
        • P(c);
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::S(D)
      • Refutation
        • R(e);XR(H)
    • Try
      • Q(A);CHECK,N_PINR(b)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(A),XR(b)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(A);N_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XB(C)::QAR2(A)
        • R(e);XB(C)::QAR1(A),XP(c)
        • R(b);::R1(F),XP(c)
        • R(b);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • P(c);
  • Actual
    • R(H);N_PINS(f)
    • Threat
      • R(H)
    • Vars
      • S(f);CHECK,OGATEB::B(I)+R(H),XS(f)
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).