MESON Chess Problem Database

Problem Display
PID: 232485 (4k2b/r1ppP1r1/6PK/3N3B/6p1/1n3b2/6n1/1R3RQ1 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Freie Presse, 2011

4k2b/r1ppP1r1/6PK/3N3B/6p1/1n3b2/6n1/1R3RQ1

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6+
      • 2.Bxg6#
    • 1...Rf7
      • 2.gxf7#
    • 1...Rh7+
      • 2.gxh7#
    • 1...Rg8
      • 2.g7#
    • 1...Bd1
      • 2.Rf8#
    • 1...Be2
      • 2.Rf8#
    • 1...Be4
      • 2.Rf8#
    • 1...Sa1
      • 2.Rb8#
    • 1...Sc1
      • 2.Rb8#
    • 1...Sd2
      • 2.Rb8#
    • 1...Sd4
      • 2.Rb8#
    • 1...Sa5
      • 2.Rb8#
    • 1...Sc5
      • 2.Rb8#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Sf6#
      • 1...Rxg6+
        • 2.Bxg6#
      • 1...Rh7+
        • 2.gxh7#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Bxd5
        • 2.Rf8#
      • 1...Ra6
        • 2.Sxc7#
      • 1...Rf7
        • 2.gxf7#
      • 1...Rg8
        • 2.g7#
      • 1...Be4
        • 2.Rf8#
      • 1...Sxe3!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sf6#
      • 1...Rxg6+
        • 2.Bxg6#
      • 1...Rh7+
        • 2.gxh7#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Bxd5
        • 2.Rf8#
      • 1...Sxc5
        • 2.Rb8#
      • 1...d6
        • 2.Qc6#
      • 1...Ra6
        • 2.Sxc7#
      • 1...Rf7
        • 2.gxf7#
      • 1...Rg8
        • 2.g7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(h);CHECK,OGATE,P_SPINR(h),XP(F)::B(E),XR(h)
    • R(h);OGATE::P(F),XR(h)
    • R(h);CHECK,OGATE::B(E)+P(F),XR(h)
    • R(h);OGATE::B(E)+P(F)
    • B(c);OGATE::R1(B)
    • S(b);OGATE::R(A)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(D)
      • Vars
        • R(h);CHECK,OGATE,P_SPINR(h),XP(F)::B(E),XR(h)
        • R(h);CHECK,OGATE::B(E)+P(F),XR(h)
        • R(h);OGATE,P_SPINR(h),XP(H)::QAR1(C),XR(h)
        • B(c);OGATE,XS(D)::R1(B)
        • R(e);N_GUARD,P_PINP(F)::S(D),XP(f)
        • R(h);OGATE::P(F),XR(h)
        • R(h);OGATE::B(E)+P(F)
        • B(c);OGATE::R1(B)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • S(D)
    • Vars
      • R(h);CHECK,OGATE,P_SPINR(h),XP(F)::B(E),XR(h)
      • R(h);CHECK,OGATE::B(E)+P(F),XR(h)
      • R(h);OGATE,XP(H)::QAR1(C),XR(h)
      • B(c);OGATE,XS(D)::R1(B)
      • S(b);OGATE,XQ(C)::R(A)
      • P(g);OGATEB::QAB(C)
      • R(e);N_GUARD,P_PINP(F)::S(D),XP(f)
      • R(h);OGATE::P(F),XR(h)
      • R(h);OGATE::B(E)+P(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).