MESON Chess Problem Database

Problem Display
PID: 229053 (1R6/p2N1p1b/2k1PP1b/1N1p2n1/4p2r/1KB3r1/3P4/2R5 w - - 0 1)

Grigoriev, K

2/3 Prize, 64 Shakhmatnoe obozrenie, 1926

1R6/p2N1p1b/2k1PP1b/1N1p2n1/4p2r/1KB3r1/3P4/2R5

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.Ba1#
      • 2.Bb2#
      • 2.Bb4#
      • 2.Bd4#
      • 2.Ba5#
      • 2.Be5#
    • 1...Rxc3+
      • 2.Rxc3#
    • 1...Rgg4
      • 2.Ba1#
      • 2.Bb2#
      • 2.Bb4#
      • 2.Bd4#
      • 2.Ba5#
      • 2.Be5#
    • 1...Sf3
      • 2.Ba1#
      • 2.Bb2#
      • 2.Bb4#
      • 2.Bd4#
      • 2.Ba5#
      • 2.Be5#
    • 1...a5
      • 2.Rb6#
    • 1...a6
      • 2.Rb6#
  • Keys
    • 1.d4!
      • threat
        • 2.Se5#
      • 1...Rxc3+
        • 2.Rxc3#
      • 1...exd4 ep
        • 2.Bd4#
      • 1...Sf3
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);CHECK,OGATE,P_SPINR(a),XB(D)::R(A),XR(a)
    • P(h);N_GUARD::R1(I)
  • Actual
    • P(B);
    • Threat
      • S(H)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XB(D)::R(A),XR(a)
      • P(b);EP,N_PINB(D),XP(B)::R(A)+B(D)
      • S(e);N_PINB(D)::R(A)+B(D)
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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).