MESON Chess Problem Database

Problem Display
PID: 197273 (8/5B2/2p5/8/4k3/2P5/1Q4NP/3K4 w - - 0 1)

Libis, Zdenek

Sachova skladba, 2008

8/5B2/2p5/8/4k3/2P5/1Q4NP/3K4

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc2#
    • 1...Kf3
      • 2.Qe2#
  • Tries
    • 1.Be6?
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Ke5!
    • 1.Qa2?
      • 1...Kd3
        • 2.Qc4#
        • 2.Qc2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Ke5
        • 2.Qe6#
      • 1...c5
        • 2.Qd5#
      • 1...Kf5!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Bh5#
        • 2.Qe2#
      • 1...Ke5!
    • 1.Qf2?
      • 1...Kd3
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qc2#
        • 2.Qf3#
      • 1...Ke5
        • 2.Qf4#
      • 1...c5!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Bg6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kf5
        • 2.Qf4#
      • 1...Kf3!
  • Keys
    • 1.Qd2!
      • 1...Kf3
        • 2.Qe2#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kf5
        • 2.Qf4#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT::QAR1(B)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B)
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
      • P(b);N_GUARD::QAB1(B)
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