MESON Chess Problem Database

Problem Display
PID: 225337 (4Nr2/8/2B1p1RB/2p1k3/K1RN2b1/5p2/8/8 w - - 0 1)

Kovacik, Jozef

Praca Prvotina, 1957

4Nr2/8/2B1p1RB/2p1k3/K1RN2b1/5p2/8/8

#2

7 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Rxe6#
    • 1...Bf5
      • 2.Sxf3#
    • 1...Bh5
      • 2.Rxe6#
    • 1...cxd4
      • 2.Rc5#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Rxc5#
      • 1...Kf5
        • 2.Rg5#
      • 1...Rf4!
    • 1.Be3?
      • threat
        • 2.Rxc5#
      • 1...cxd4
        • 2.Rc5#
      • 1...Rxe8!
    • 1.Rxg4?
      • threat
        • 2.Rxc5#
        • 2.Re4#
      • 1...cxd4
        • 2.Rc5#
      • 1...Rf4
        • 2.Bxf4#
      • 1...Rxe8!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxc5#
      • 1...Kxf5
        • 2.Rg5#
      • 1...Rxf5
        • 2.Re4#
      • 1...Bxf5
        • 2.Bf4#
      • 1...exf5
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(f);S_CUTB(b)::R1(E),XP(e)
    • B(b);N_GUARD,SBLOCK,S_CUTR(f)::S(C),XP(a)
    • B(b);N_GUARD::R1(E),XP(e)
    • P(c);SBLOCK,XS(C)::R(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • R(B),XP(c)
      • Vars
        • K(d);P-FLIGHT::R1(E)
      • Refutation
        • R(f);P_PINR(B)
    • Try
      • B(F);
      • Threat
        • R(B),XP(c)
      • Vars
        • P(c);XS(C)::R(B)
      • Refutation
        • R(f);XS(G)
    • Try
      • R(E);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(C)::R(B)
        • R(f);N_GUARD::B(F),XR(f)
      • Refutation
        • R(f);XS(G)
  • Actual
    • S(C);
    • Threat
      • R(B),XP(c)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XS(C)::R1(E)
      • R(f);SBLOCK,XS(C)::R1(B)
      • B(b);SBLOCK,XS(C)::B(F)
      • P(e);SBLOCK,XS(C)::B(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).