MESON Chess Problem Database

Problem Display
PID: 109447 (r6B/r7/n4R2/2P1R3/1p6/nNkp4/BN6/3K4 w - - 0 1)

Strzala, Kazimierz

Szachy, 1966

r6B/r7/n4R2/2P1R3/1p6/nNkp4/BN6/3K4

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sa4#
  • Tries
    • 1.Re4?
      • threat
        • 2.Sa4#
      • 1...Kxb2
        • 2.Rf2#
      • 1...Sc7
        • 2.Rf8#
      • 1...Sb8
        • 2.Rf7#
      • 1...d2
        • 2.Rf3#
      • 1...Sxc5!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Sa4#
      • 1...Kxb2
        • 2.Re2#
      • 1...Sxc5
        • 2.Rxc5#
      • 1...Sc7
        • 2.Re8#
      • 1...Sb8
        • 2.Re7#
      • 1...d2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::S(C)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(C)
      • Vars
        • K(b);S_FLIGHT,XS(C)::B(H)+R(G),DCHECK
        • S(e);S_CUTR(f)::B(H)+R(G)
        • S(e);S_CUTR(g)::B(H)+R(G)
        • P(c);::B(H)+R(G),DCHECK
      • Refutation
        • S(e);XP(E)
  • Actual
    • R(G);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT,XS(C)::B(H)+R(F),DCHECK
      • S(e);OGATE,XP(E)::B(H)+R(F),DCHECK,XS(e)
      • S(e);S_CUTR(f)::B(H)+R(F)
      • S(e);S_CUTR(g)::B(H)+R(F)
      • P(c);::B(H)+R(F),DCHECK
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