MESON Chess Problem Database

Problem Display
PID: 60361 (8/2Q1pR2/3NP1pK/1P1p2BR/n2kp3/3bp2B/1P6/4N3 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

3rd HM., 64 Shakhmatnoe obozrenie, 1968

8/2Q1pR2/3NP1pK/1P1p2BR/n2kp3/3bp2B/1P6/4N3

#2

11 + 8

3751 FIDE Album (1968-1970) 1977
56 The Problemist 2005
56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb5
      • 2.Sxb5#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sb6
      • 2.Qc3#
    • 1...gxh5
      • 2.Sf5#
    • 1...exd6
      • 2.Bf6#
  • Tries
    • 1.Kxg6?
      • threat
        • 2.Sf5#
      • 1...Ke5
        • 2.Bxe3#
      • 1...exd6
        • 2.Bf6#
      • 1...Sc5!
    • 1.Sc2+?
      • 1...Ke5
        • 2.Sc4#
        • 2.Sb7#
        • 2.Sc8#
        • 2.Se8#
        • 2.Bf4#
      • 1...Bxc2!
    • 1.Rxe7?
      • threat
        • 2.Bf6#
      • 1...Ke5
        • 2.Sf5#
      • 1...e2!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Bxe3#
      • 1...Ke5
        • 2.Bf6#
      • 1...exf3
        • 2.Sxf3#
      • 1...gxh5
        • 2.Sf5#
      • 1...e2
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);XP(D)::S(G),XB(a)
    • S(c);N_GUARD::QAB1(J),XS(c)
    • S(c);N_GUARD::QAB1(J)
    • P(g);N_GUARD,XR(F)::S(G)
    • P(h);N_GUARD,XS(G)::B(E)
  • Tries
    • Try
      • K(I);P-FLIGHT,XP(g)
      • Threat
        • S(G)
      • Vars
        • K(d);S_FLIGHT::R(F)+B(E),XP(b)
        • P(h);N_GUARD,XS(G)::B(E)
      • Refutation
        • S(c);
    • Try
      • S(A);CHECK
      • Refutation
        • B(a);XS(A)
    • Try
      • R(K);XP(h)
      • Threat
        • B(E)
      • Vars
        • K(d);S_FLIGHT::QAB(J)+S(G)
      • Refutation
        • P(b);
  • Actual
    • R(K);
    • Threat
      • B(E),XP(b)
    • Vars
      • K(d);S_FLIGHT::R(F)+B(E),DCHECK
      • P(e);XR(K)::S(A),XP(e)
      • P(g);N_GUARD,XR(F)::S(G)
      • P(b);::B(E)
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