MESON Chess Problem Database

Problem Display
PID: 24109 (7B/4Q3/1K2p3/3k4/3p4/8/8/3B4 w - - 0 1)

Karlsson, Liss

Folket, 1947

7B/4Q3/1K2p3/3k4/3p4/8/8/3B4

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Kb5?
      • threat
        • 2.Bf3#
      • 1...e5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Qa3?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...d3
        • 2.Qxd3#
      • 1...e5!
    • 1.Qh4?
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Qxd4#
      • 1...Kd6
        • 2.Qd8#
      • 1...d3
        • 2.Qd4#
      • 1...e5!
    • 1.Qd8+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke4!
    • 1.Qc7?
      • threat
        • 2.Bf3#
        • 2.Qc6#
      • 1...e5
        • 2.Qc6#
      • 1...Ke4!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qd8#
      • 1...d3
        • 2.Qd4#
      • 1...e5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • B(A)
      • Vars
        • P(c);OGATE::QAR1(C),XP(c)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(C),XP(a)
        • K(b);P-FLIGHT::QAR2(C)
        • P(a);::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(C),XP(a)
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
      • P(a);::QAR1(C)
      • P(c);OGATE::QAB1(C)
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