MESON Chess Problem Database

Problem Display
PID: 75256 (k1KB3Q/p7/8/8/8/3n4/7p/8 w - - 0 1)

Kukin, Gennady

Kertsensky Rabotsin, 1993

k1KB3Q/p7/8/8/8/3n4/7p/8

#2

3 + 4

145 StrateGems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...h1Q
      • 2.Qxh1#
    • 1...h1S
      • 2.Qxh1#
    • 1...h1B
      • 2.Qxh1#
    • 1...h1R
      • 2.Qxh1#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Kc7#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#
      • 1...a6!
    • 1.Qe5?
      • threat
        • 2.Qb8#
        • 2.Qe4#
        • 2.Qd5#
      • 1...a5
        • 2.Qb8#
        • 2.Qxa5#
      • 1...a6
        • 2.Qb8#
      • 1...h1Q
        • 2.Qb8#
      • 1...h1B
        • 2.Qb8#
      • 1...Sf2
        • 2.Qb8#
        • 2.Qd5#
      • 1...Sb4
        • 2.Qb8#
      • 1...Sf4
        • 2.Qb8#
      • 1...Sc5
        • 2.Qb8#
      • 1...Sxe5!
    • 1.Qh7?
      • threat
        • 2.Qe4#
        • 2.Qb7#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...Sf2
        • 2.Qb7#
      • 1...Sb4
        • 2.Qb7#
      • 1...Sf4
        • 2.Qb7#
      • 1...Se5
        • 2.Qb7#
      • 1...a5
        • 2.Qb7#
      • 1...a6
        • 2.Qb7#
      • 1...Sc5!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Kc7#
      • 1...axb6
        • 2.Qa1#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • P(a);OGATE::QAB(C),XQ(a)
    • P(a);OGATE::QAB(C),XS(a)
    • P(a);OGATE::QAB(C),XB(a)
    • P(a);OGATE::QAB(C),XR(a)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR(C)+K(A)
      • Vars
        • P(a);OGATE::QAB(C),XQ(a)
        • P(a);OGATE::QAB(C),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);::QAR1(C)
        • P(a);::QAR1(C)
        • S(b);::QAR1(C)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATE::QAB(C),XQ(a)
        • P(a);OGATE::QAB(C),XB(a)
        • S(b);::QAB1(C)
        • P(c);::QAB1(C)
      • Refutation
        • S(b);
  • Actual
    • B(B);
    • Threat
      • QAR(C)+K(A)
    • Vars
      • P(c);OGATEB,XB(B)::QAB(C)
      • P(a);OGATE::QAB(C),XQ(a)
      • P(a);OGATE::QAB(C),XR(a)
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