MESON Chess Problem Database

Problem Display
PID: 206372 (8/3p4/3r4/P3NpBR/2PkpRP1/3P4/2KQ4/8 w - - 0 1)

Kofman, Rafael Moiseevich

1st HM., Revista de Sah, 1925

8/3p4/3r4/P3NpBR/2PkpRP1/3P4/2KQ4/8

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe4+?
      • 1...fxe4
        • 2.Be3#
      • 1...Kc5!
  • Keys
    • 1.Be7!
      • 1...Kc5
        • 2.d4#
      • 1...Kxe5
        • 2.Rxe4#
      • 1...fxg4
        • 2.Qf2#
      • 1...Rd5
        • 2.Sf3#
      • 1...Ra6
        • 2.Sf3#
      • 1...Rb6
        • 2.Sf3#
      • 1...Rc6
        • 2.Sf3#
      • 1...Re6
        • 2.Sf3#
      • 1...Rf6
        • 2.Sf3#
      • 1...Rg6
        • 2.Sf3#
      • 1...Rh6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • P(c);XR(E)::B(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(I);
    • Vars
      • K(a);N_SPINP(b),OGATE,P_SPINR(d),S_FLIGHT::P(C)
      • K(a);N_SPINP(b),P_SPINP(c),S_FLIGHT,XS(H)::R1(E),XP(b)
      • P(c);XP(F)::QAB(B)
      • R(d);::S(H)
      • R(d);P_PINP(D)::S(H)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).