MESON Chess Problem Database

Problem Display
PID: 80241 (8/3Np3/R3P1K1/2pkp3/P5p1/P1pB2P1/2P1NP2/4R3 w - - 0 1)

Labai, Zoltan

1st Prize, Sachove umeni (Ceskoslovensky sach), 1979

8/3Np3/R3P1K1/2pkp3/P5p1/P1pB2P1/2P1NP2/4R3

#2

12 + 6

6424 Czech Album (1979-1981) 1986
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kf5?
      • 1...c4
        • 2.Be4#
      • 1...e4!
    • 1.Sf4+?
      • 1...Kd4
        • 2.Re4#
      • 1...exf4!
    • 1.Bc4+?
      • 1...Kxc4
        • 2.Sb6#
      • 1...Ke4!
    • 1.Be4+?
      • 1...Kc4
        • 2.Sxe5#
        • 2.Sb6#
      • 1...Kxe4!
    • 1.Bb5?
      • 1...Ke4
        • 2.Bc6#
      • 1...e4
        • 2.Rd1#
      • 1...c4!
    • 1.Bf5?
      • 1...Kc4
        • 2.Sb6#
      • 1...c4
        • 2.Rd1#
      • 1...e4!
    • 1.Rb1?
      • 1...c4
        • 2.Rb5#
      • 1...e4!
    • 1.Rh1?
      • 1...e4
        • 2.Rh5#
      • 1...c4!
    • 1.f3?
      • 1...e4
        • 2.fxe4#
      • 1...c4
        • 2.Be4#
      • 1...gxf3!
  • Keys
    • 1.Rd1!
      • 1...e4
        • 2.Bb5#
      • 1...c4
        • 2.Bf5#

Anticipated by 87585(1966)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(K);S_FLIGHT
      • Vars
        • P(c);SBLOCK::B(F)
      • Refutation
        • P(e);
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(A)
      • Refutation
        • P(e);XS(C)
    • Try
      • B(F);CHECK
      • Vars
        • K(d);S_FLIGHT,XB(F)::S(L)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(F);CHECK
      • Refutation
        • K(d);S_FLIGHT,XB(F)
    • Try
      • B(F);
      • Vars
        • K(d);S_FLIGHT::B(F)
        • P(e);SBLOCK::R(A)
      • Refutation
        • P(c);
    • Try
      • B(F);
      • Vars
        • K(d);S_FLIGHT::S(L)
        • P(c);SBLOCK::R(A)
      • Refutation
        • P(e);
    • Try
      • R(A);
      • Vars
        • P(c);OGATEB::R(A)
      • Refutation
        • P(e);
    • Try
      • R(A);
      • Vars
        • P(e);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • P(D);
      • Vars
        • P(e);OGATE::P(D),XP(e)
        • P(c);SBLOCK::B(F)
      • Refutation
        • P(b);XP(D)
  • Actual
    • R(A);
    • Vars
      • P(e);SBLOCK::R(A)+B(F)
      • P(c);SBLOCK::R(A)+B(F)
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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).