MESON Chess Problem Database

Problem Display
PID: 167743 (kN1R4/3Rr3/K1P5/8/8/8/8/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

3rd Prize, Smena (Moscow), 1995

kN1R4/3Rr3/K1P5/8/8/8/8/8

#2

5 + 2

145 StrateGems 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Ra7#
    • 1...Re2
      • 2.Ra7#
    • 1...Re3
      • 2.Ra7#
    • 1...Re4
      • 2.Ra7#
    • 1...Re5
      • 2.Ra7#
    • 1...Re6
      • 2.Ra7#
    • 1...Rxd7
      • 2.Sxd7#
    • 1...Re8
      • 2.Ra7#
  • Tries
    • 1.Rb7?
      • threat
        • 2.Sd7#
      • 1...Rxb7
        • 2.cxb7#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Re8
        • 2.Ra7#
      • 1...Rc7!
    • 1.Rc7?
      • threat
        • 2.Sd7#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Re8
        • 2.Ra7#
      • 1...Rxc7!
    • 1.c7?
      • threat
        • 2.Sc6#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Re8!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sa6#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Re8
        • 2.Ra7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R1(C)
    • R(a);N_GUARD,P_PINP(B)::R1(C)
    • R(a);XR(C)::R(E)+S(D),XR(a)
  • Tries
    • Try
      • R(C);
      • Threat
        • R(E)+S(D)
      • Vars
        • R(a);OGATE,XR(C)::P(B),XR(a)
        • R(a);::R(E)+S(D),XR(a)
        • R(a);N_GUARD::R1(C)
      • Refutation
        • R(a);
    • Try
      • R(C);
      • Threat
        • R(E)+S(D)
      • Vars
        • R(a);::R(E)+S(D),XR(a)
        • R(a);N_GUARD::R1(C)
      • Refutation
        • R(a);XR(C)
    • Try
      • P(B);
      • Threat
        • R(E)+S(D)
      • Vars
        • R(a);XR(C)::R(E)+S(D),XR(a)
      • Refutation
        • R(a);
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • R(E)+S(D)
    • Vars
      • R(a);XR(C)::R(E)+S(D),XR(a)
      • R(a);N_GUARD::R1(C)
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