MESON Chess Problem Database

Problem Display
PID: 63326 (6bB/5R2/B6b/2pp4/p1p5/N2kp1N1/K2P1P2/4Q1n1 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Shedey, Sergey Oleksandrovich

2nd Prize, Source?, 1976

6bB/5R2/B6b/2pp4/p1p5/N2kp1N1/K2P1P2/4Q1n1

#2

9 + 9

3771 FIDE Album (1974-1976) 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Qxe3#
    • 1...Bf8
      • 2.Qxe3#
    • 1...Se2
      • 2.Qxe2#
    • 1...Sf3
      • 2.Qe2#
    • 1...Sh3
      • 2.Qe2#
    • 1...exd2
      • 2.Qb1#
    • 1...d4
      • 2.Bxc4#
  • Tries
    • 1.Bc8?
      • threat
        • 2.Bf5#
      • 1...Bg7
        • 2.Qxe3#
      • 1...Bh7!
    • 1.Rd7?
      • threat
        • 2.Bxc4#
      • 1...Bg7
        • 2.Qxe3#
      • 1...d4!
    • 1.Qc1?
      • threat
        • 2.Qc2#
        • 2.Qc3#
      • 1...Se2
        • 2.Qc2#
      • 1...d4
        • 2.Bxc4#
        • 2.Qc2#
      • 1...Bg7!
    • 1.Qd1?
      • threat
        • 2.Qc2#
        • 2.dxe3#
      • 1...exd2
        • 2.Qc2#
        • 2.Qb1#
      • 1...exf2
        • 2.Qc2#
      • 1...Sf3
        • 2.Qc2#
        • 2.Qe2#
      • 1...e2
        • 2.Qc2#
      • 1...d4
        • 2.Bxc4#
        • 2.Qc2#
      • 1...Bg7!
    • 1.dxe3?
      • threat
        • 2.Qc3#
        • 2.Qd1#
      • 1...Bxe3
        • 2.Qc3#
        • 2.Qxe3#
      • 1...Se2
        • 2.Qd1#
        • 2.Qxe2#
      • 1...Sf3
        • 2.Qc3#
        • 2.Qe2#
      • 1...d4
        • 2.Bxc4#
      • 1...Bg7!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sxc5#
      • 1...Kxe4
        • 2.Qb1#
      • 1...dxe4
        • 2.Bxc4#
      • 1...Bg7
        • 2.Qxe3#
      • 1...Bf8
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(h);N_GUARD::QAR1(A),XP(c)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD::QAB1(A)
    • P(c);SBLOCK,XP(C)::QAB(A)
    • P(g);N_GUARD::B(G),XP(e)
  • Tries
    • Try
      • B(G);N_PINP(e)
      • Threat
        • B(G)
      • Vars
        • B(h);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • B(i);
    • Try
      • R(H);
      • Threat
        • B(G),XP(e)
      • Vars
        • B(h);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • P(g);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(A)
      • Refutation
        • B(h);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(D)::QAB1(A)
        • P(c);::QAB1(A)
      • Refutation
        • B(h);
    • Try
      • P(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);N_GUARD::B(G),XP(e)
      • Refutation
        • B(h);
  • Actual
    • S(F);
    • Threat
      • S(F),XP(f)
    • Vars
      • K(b);N_SPINP(e),P_SPINP(c),S_FLIGHT,XS(F)::QAB(A)
      • P(g);N_GUARD,SBLOCK,XS(F)::B(G),XP(e)
      • B(h);N_GUARD::QAR1(A),XP(c)
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