MESON Chess Problem Database

Problem Display
PID: 266897 (8/5p2/8/NRN1kB2/4P3/B2R3K/1P6/8 w - - 0 1)

Stetsenko, R

Shakhmatnaya kompozitsiya, 2022

8/5p2/8/NRN1kB2/4P3/B2R3K/1P6/8

#2

9 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Rf3?
      • 1...Kd4
        • 2.Scb3#
      • 1...Kd6
        • 2.Sa6#
      • 1...f6
        • 2.Scb3#
        • 2.Se6#
      • 1...Kf6!
    • 1.Rd6?
      • threat
        • 2.Sd3#
      • 1...Kxd6
        • 2.Sa6#
      • 1...Kf4!
  • Keys
    • 1.Rg3!
      • 1...Kd4
        • 2.Scb3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Sa6#
      • 1...Kf6
        • 2.Sd7#
      • 1...f6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::R(G)+S(H)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(H)
        • K(a);N_GUARD,S_FLIGHT::B(B)+S(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • R(G)+S(H),DCHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XR(C)::B(B)+S(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::S(H)
      • K(a);N_GUARD,S_FLIGHT::B(B)+S(H)
      • P(b);SBLOCK::R(G)+S(H)
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