MESON Chess Problem Database

Problem Display
PID: 108478 (8/3p2p1/Q5K1/3kB3/8/8/8/5B2 w - - 0 1)

Jada, Faud Emile

Northwest Chess, 1978

8/3p2p1/Q5K1/3kB3/8/8/8/5B2

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb5#
      • 2.Qd6#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qd6#
      • 1...Kc5
        • 2.Qb5#
        • 2.Qd6#
      • 1...d6
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qxd6#
      • 1...g6+!
    • 1.Bd3?
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Qb5#
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Kxe5!
    • 1.Bh2?
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd4!
    • 1.Bg3?
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd4!
    • 1.Bf4?
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ke4!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qb5#
        • 2.Qd6#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxe5!
  • Keys
    • 1.Bd6!
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • P(c);CHECK
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • P(b);::QAR1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • B(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::B(A)
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