MESON Chess Problem Database

Problem Display
PID: 110310 (Qb6/pN6/P1k1P3/K2Np3/P3B3/8/8/8 w - - 0 1)

Mlynka, Karol

Breyer MT, 1973

Qb6/pN6/P1k1P3/K2Np3/P3B3/8/8/8

#2

8 + 4

6490 yacpdb 2009
3713 Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qe8#
    • 1...Bc7+
      • 2.Sb6#
  • Tries
    • 1.Sd8+?
      • 1...Kd6
        • 2.Qc6#
      • 1...Kc5!
    • 1.Qxa7?
      • threat
        • 2.Qc5#
        • 2.Qb6#
      • 1...Bc7+
        • 2.Sb6#
      • 1...Bd6
        • 2.Sd8#
        • 2.Qb6#
      • 1...Bxa7!
    • 1.e7?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...Bc7+
        • 2.Sb6#
      • 1...Bd6
        • 2.Qe8#
        • 2.e8Q#
        • 2.e8B#
      • 1...Kd7!
  • Keys
    • 1.Kb4!
      • 1...Bd6+
        • 2.Sc5#
      • 1...Bc7
        • 2.Qe8#

Anticipated by 152395(1926)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);OGATE::QAB(H)
    • B(d);CHECK,SBLOCK::B(B)+S(D)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(H)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(H);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);CHECK,SBLOCK::B(B)+S(D)
      • Refutation
        • B(d);XQ(H)
    • Try
      • P(F);
      • Threat
        • P=Q
      • Vars
        • B(d);CHECK,SBLOCK::B(B)+S(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • B(d);CHECK,SBLOCK::QAB(H)+S(G)
      • B(d);OGATE::QAB(H)
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