MESON Chess Problem Database

Problem Display
PID: 107940 (2N5/1k6/N3P3/8/2K5/5R2/8/5B2 w - - 0 1)

Cwirko, Anatol

Szachy, 1979

2N5/1k6/N3P3/8/2K5/5R2/8/5B2

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ra3?
      • 1...Kc6
        • 2.Bg2#
      • 1...Ka8
        • 2.Bg2#
      • 1...Kxc8!
    • 1.Rb3+?
      • 1...Kc6
        • 2.Bg2#
        • 2.Rb6#
      • 1...Ka8
        • 2.Sc7#
        • 2.Bg2#
        • 2.Rb8#
      • 1...Kxc8
        • 2.Rb8#
      • 1...Kxa6!
    • 1.Rf7+?
      • 1...Kxa6
        • 2.Kb4#
        • 2.Ra7#
      • 1...Kc6
        • 2.Sb4#
        • 2.Sb8#
        • 2.Bg2#
        • 2.Rc7#
      • 1...Ka8
        • 2.Sb6#
        • 2.Bg2#
        • 2.Ra7#
      • 1...Kxc8!
    • 1.Rf8?
      • 1...Kc6
        • 2.Bg2#
      • 1...Ka8
        • 2.Bg2#
      • 1...Kxa6!
  • Keys
    • 1.Bg2!
      • 1...Kxa6
        • 2.Ra3#
      • 1...Kc6
        • 2.Rf1#
        • 2.Rf2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rh3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...Ka8
        • 2.Rf1#
        • 2.Rf2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rh3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...Kxc8
        • 2.Rf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(F)::R1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT,XS(D)::R(B)
      • K(a);S_FLIGHT,XS(F)::R(B)
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