MESON Chess Problem Database

Problem Display
PID: 86517 (3N4/1R1Pp3/p1B1P3/p1kP4/Pn1R3K/5N2/7Q/8 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Kiss (Janos)-80 JT, 1990

3N4/1R1Pp3/p1B1P3/p1kP4/Pn1R3K/5N2/7Q/8

#2

11 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb3#
        • 2.Rc4#
      • 1...Sxc6
        • 2.Sb3#
      • 1...Kxd4!
    • 1.Bb5?
      • 1...Sxd5
        • 2.Rc4#
      • 1...axb5
        • 2.Rxb5#
      • 1...Sa2
        • 2.Qc7#
      • 1...Sc2
        • 2.Qc7#
      • 1...Sd3
        • 2.Qc7#
      • 1...Sc6!
    • 1.Qe5?
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Sxc6
        • 2.dxc6#
      • 1...Sa2
        • 2.d6#
      • 1...Sc2
        • 2.d6#
      • 1...Sd3!
    • 1.Qc2+?
      • 1...Kd6
        • 2.Sf7#
      • 1...Sxc2!
    • 1.d6?
      • 1...Sxc6
        • 2.Qc2#
      • 1...exd6
        • 2.Qxd6#
      • 1...Sa2
        • 2.Qe5#
      • 1...Sc2
        • 2.Qe5#
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qc2#
      • 1...Sd5!
  • Keys
    • 1.Qc7!
      • 1...Sxd5
        • 2.Bxd5#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Sa2
        • 2.Bb5#
      • 1...Sc2
        • 2.Bb5#
      • 1...Sd3
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XB(G)::S(B)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • B(G);
      • Vars
        • S(a);SBLOCK,XP(F)::R1(D)
        • P(d);OGATE,XB(G)::R1(I),XP(d)
        • S(a);N_GUARD::QAR2(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(F)::QAR1(A),XS(a)
        • S(a);OGATE,XB(G)::QAR(A)+P(F),XS(a)
        • S(a);N_GUARD::QAR(A)+P(F)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(K)
      • Refutation
        • S(a);XQ(A)
    • Try
      • P(F);
      • Vars
        • S(a);N_GUARD,XB(G)::QAR(A)
        • P(e);OGATE,XP(F)::QAB1(A),XP(e)
        • S(a);N_GUARD::QAR2(A)
        • S(a);N_GUARD::QAR(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Vars
      • S(a);OGATE,XP(F)::QAR(A)+B(G),XS(a)
      • S(a);OGATE,P_SPINS(a),XB(G)::QAR1(A),XS(a)
      • S(a);N_GUARD::QAR(A)+B(G)
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