MESON Chess Problem Database

Problem Display
PID: 76202 (1KN5/2RPn3/p3kPB1/8/2b3P1/3p3N/pR6/B5n1 w - - 0 1)

Gvozdjak, Peter

Sp. HM., Pravda, 1991

(First published on Fri Jun 14 1991)

1KN5/2RPn3/p3kPB1/8/2b3P1/3p3N/pR6/B5n1

#2

10 + 7

145 StrateGems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Rb6#
  • Tries
    • 1.Bf7+?
      • 1...Ke5
        • 2.Re2#
      • 1...Kxf6
        • 2.Rf2#
      • 1...Kxf7!
    • 1.Re2+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Bf7#
        • 2.Re5#
        • 2.d8Q#
        • 2.d8R#
      • 1...dxe2
        • 2.Sf4#
      • 1...Sxe2!
    • 1.Rb6+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Sxe7#
        • 2.Rd6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Sc6+!
    • 1.d8S+?
      • 1...Ke5
        • 2.Rb5#
      • 1...Kxf6
        • 2.Rb6#
      • 1...Kd5!
  • Keys
    • 1.Sf4+!
      • 1...Ke5
        • 2.Rf2#
      • 1...Kxf6
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT,XP(E)::B(A)+R(B),DCHECK
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(f);P-FLIGHT::B(A)+R(B),DCHECK
        • K(f);P-FLIGHT,XP(E)::B(A)+R(B),DCHECK
      • Refutation
        • K(f);S_FLIGHT,XB(F)
    • Try
      • R(B);CHECK
      • Vars
        • P(c);XR(B)::S(C)
      • Refutation
        • S(a);XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • S(g);CHECK,P_SPINS(g)
    • Try
      • P(H);CHECK
      • Vars
        • K(f);P-FLIGHT::B(A)+R(B),DCHECK
        • K(f);P-FLIGHT,XP(E)::B(A)+R(B),DCHECK
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(C);CHECK
    • Vars
      • K(f);P-FLIGHT::B(A)+R(B)
      • K(f);P-FLIGHT,XP(E)::B(A)+R(B)
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