MESON Chess Problem Database

Problem Display
PID: 108010 (2b4B/8/8/6k1/4Q3/8/7K/3B4 w - - 0 1)

Duciaume, Eric

Apprenti Sorcier, 1995

2b4B/8/8/6k1/4Q3/8/7K/3B4

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kh4
        • 2.Bf6#
        • 2.Qh5#
        • 2.Qd8#
      • 1...Kg6
        • 2.Qh5#
      • 1...Kh6
        • 2.Qh5#
      • 1...Bf5!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qh5#
        • 2.Qg7#
      • 1...Bxg4!
    • 1.Qe5+?
      • 1...Kh4
        • 2.Bf6#
        • 2.Qg3#
        • 2.Qf6#
        • 2.Qh5#
        • 2.Qe7#
      • 1...Kg6
        • 2.Qh5#
      • 1...Kh6
        • 2.Qg7#
        • 2.Qh5#
      • 1...Bf5!
    • 1.Qe6?
      • threat
        • 2.Qf6#
      • 1...Kf4
        • 2.Qe5#
      • 1...Kh4
        • 2.Bf6#
        • 2.Qf6#
        • 2.Qh6#
        • 2.Qe7#
      • 1...Bxe6!
  • Keys
    • 1.Qh4+!
      • 1...Kxh4
        • 2.Bf6#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kg6
        • 2.Qh5#

FEATURES

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