MESON Chess Problem Database

Problem Display
PID: 231237 (8/K1R5/2P1p3/N2P2Q1/3k4/3p1P2/Nn6/2r2b2 w - - 0 1)

Kofman, Rafael Moiseevich

Revista de Sah, 1927

8/K1R5/2P1p3/N2P2Q1/3k4/3p1P2/Nn6/2r2b2

#2

8 + 6

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sb3#
    • 1...Sc4
      • 2.Sb3#
  • Tries
    • 1.Qe3+?
      • 1...Kxd5
        • 2.Rd7#
      • 1...Kxe3!
    • 1.Qe5+?
      • 1...Kc5
        • 2.dxe6#
        • 2.d6#
      • 1...Kxe5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.dxe6#
      • 1...Kc5
        • 2.dxe6#
      • 1...Rxc6
        • 2.dxc6#
      • 1...exd5
        • 2.Rxd5#
      • 1...Rc5
        • 2.Qf4#
      • 1...Sc4
        • 2.Sb3#
      • 1...e5
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::S(C)
    • S(c);SBLOCK::S(C)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(D)::R(H)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
  • Actual
    • R(H);
    • Threat
      • R(H)+P(D),XP(f)
    • Vars
      • K(e);S_FLIGHT::QAR(E)+P(D),XP(f)
      • R(a);OGATE,XP(F)::R(H)+P(D),XR(a)
      • P(f);OGATE,P_SPINP(f),XP(D)::R1(H),XP(f)
      • R(a);SBLOCK::QAR2(E)
      • S(c);SBLOCK::S(C)
      • P(f);SBLOCK::QAB(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).