MESON Chess Problem Database

Problem Display
PID: 6092 (7n/K7/3B4/p7/k2p4/6b1/1n1N4/5Q2 w - - 0 1)

Knotek, Ladislav

Zemedelske noviny, 1926

7n/K7/3B4/p7/k2p4/6b1/1n1N4/5Q2

#2

4 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
  • Tries
    • 1.Ka6?
      • threat
        • 2.Qb5#
        • 2.Qa1#
      • 1...Be1
        • 2.Qb5#
      • 1...Sd1
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qxd1#
      • 1...Sd3
        • 2.Qa1#
        • 2.Qd1#
      • 1...Sc4
        • 2.Qxc4#
        • 2.Qd1#
      • 1...d3
        • 2.Qa1#
      • 1...Bxd6!
    • 1.Kb6?
      • threat
        • 2.Qb5#
        • 2.Qa1#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Be1
        • 2.Qb5#
      • 1...Sd1
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qxd1#
      • 1...Sd3
        • 2.Qa1#
        • 2.Qd1#
      • 1...d3
        • 2.Qa1#
      • 1...Bxd6!
    • 1.Qf3?
      • threat
        • 2.Qc6#
        • 2.Qb3#
      • 1...Bxd6
        • 2.Qb3#
      • 1...Sd3
        • 2.Qc6#
      • 1...d3
        • 2.Qc6#
      • 1...Kb5!
    • 1.Qf7?
      • threat
        • 2.Qb3#
        • 2.Qe8#
        • 2.Qd7#
      • 1...Kb5
        • 2.Qe8#
        • 2.Qd7#
      • 1...Bxd6
        • 2.Qb3#
      • 1...Sc4
        • 2.Qxc4#
        • 2.Qe8#
        • 2.Qd7#
      • 1...Sxf7!
    • 1.Qf8?
      • threat
        • 2.Qe8#
      • 1...Kb5
        • 2.Qe8#
      • 1...Bxd6!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qd7#
      • 1...Kb5
        • 2.Qd7#
      • 1...Bxd6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAR2(A)
    • S(a);N_GUARD::QAR2(A),XS(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(A)
        • P(d);::QAR(A)
      • Refutation
        • B(b);XB(C)
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,N_GUARD::QAR2(A),XS(a)
        • B(b);::QAB1(A)
        • P(d);::QAR(A)
      • Refutation
        • B(b);XB(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XB(C)::QAB1(A)
        • S(a);::QAB(A)
        • P(d);::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • B(b);XB(C)::QAB1(A)
      • Refutation
        • S(f);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • B(b);XB(C)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • B(b);OGATE,XB(C)::QAB1(A)
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