MESON Chess Problem Database

Problem Display
PID: 133791 (1N6/2RK4/Q7/3p4/3k1B2/4p3/5nBN/3n4 w - - 0 1)

Oltean, Gligor

Comm., Melnichenko-60 JT, 1999

1N6/2RK4/Q7/3p4/3k1B2/4p3/5nBN/3n4

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sf3#
  • Tries
    • 1.Sc6+?
      • 1...Kc5
        • 2.Bd6#
      • 1...Kc3!
    • 1.Bxd5?
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Sb2!
    • 1.Qe2?
      • 1...Sb2
        • 2.Qxe3#
      • 1...Sc3
        • 2.Qxe3#
      • 1...Sh1
        • 2.Qxd1#
      • 1...Sh3
        • 2.Qxd1#
      • 1...Se4
        • 2.Sf3#
      • 1...Sg4
        • 2.Qxd1#
      • 1...Sd3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxd5#
      • 1...Sc3
        • 2.Sc6#
      • 1...Se4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(B)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT::B(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(A);XP(e)
      • Threat
        • QAR1(D)
      • Vars
        • K(d);P-FLIGHT,XB(A)::QAB1(D)
      • Refutation
        • S(a);
    • Try
      • Q(D);
      • Vars
        • S(a);N_GUARD::QAB1(D),XP(c)
        • S(b);N_GUARD::QAR(D),XS(a)
        • S(b);SBLOCK::S(B)
      • Refutation
        • S(b);
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XP(e)
    • Vars
      • S(a);SBLOCK::S(G)
      • S(b);SBLOCK::S(B)
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