MESON Chess Problem Database

Problem Display
PID: 22310 (K1B5/4n3/8/1R6/1B1n4/1P1kP3/6Qp/5N2 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Rudenko, Valentin Fedorovich

1st Prize, Szachy, 1977

K1B5/4n3/8/1R6/1B1n4/1P1kP3/6Qp/5N2

#2

8 + 4

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Tries
    • 1.Rc5?
      • threat
        • 2.Rc3#
      • 1...Sf3
        • 2.Qc2#
      • 1...Se2
        • 2.Ba6#
      • 1...Sb5
        • 2.Qc2#
      • 1...Sd5!
    • 1.Rd5?
      • threat
        • 2.Ba6#
        • 2.Rxd4#
      • 1...Sxc8
        • 2.Rxd4#
      • 1...Sf5
        • 2.Bxf5#
        • 2.Ba6#
      • 1...Sc6
        • 2.Bf5#
        • 2.Ba6#
      • 1...Sxd5!
  • Keys
    • 1.Ba6!
      • threat
        • 2.Rd5#
      • 1...Sxb5
        • 2.Bxb5#
      • 1...Se2
        • 2.Rc5#
      • 1...Sf3
        • 2.Re5#
      • 1...Sd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • S(c);N_GUARD::QAB1(B)
        • S(c);N_GUARD::B(H)
      • Refutation
        • S(d);
    • Try
      • R(F);P_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XB(H)::R1(F),XS(c)
      • Refutation
        • S(d);N_SPINS(c),XR(F)
  • Actual
    • B(H);
    • Threat
      • B(H)+R(F)
    • Vars
      • S(c);OGATE,P_SPINS(c),XR(F)::B(H),XS(c)
      • S(c);N_GUARD::B(H)+R(F)
      • S(d);::B(H)+R(F),XS(d)
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