MESON Chess Problem Database

Problem Display
PID: 68177 (5b2/7p/4B1kP/4Q3/8/5K2/8/8 w - - 0 1)

Bakke, Nils Adrian

Norsk Sjakkblad, 1999

5b2/7p/4B1kP/4Q3/8/5K2/8/8

#2

4 + 3

5454 Near Snap 2007
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qg5#
      • 1...Kxh6
        • 2.Qf6#
        • 2.Qg5#
      • 1...Be7
        • 2.Qg7#
      • 1...Bxh6!
    • 1.Bf7+?
      • 1...Kxh6
        • 2.Qf6#
      • 1...Kxf7!
    • 1.Qf4?
      • threat
        • 2.Bf7#
      • 1...Kh5
        • 2.Bf7#
      • 1...Bxh6!
    • 1.Qf6+?
      • 1...Kh5
        • 2.Bg4#
        • 2.Bf7#
      • 1...Kxf6!
  • Keys
    • 1.Bg4!
      • 1...Kxh6
        • 2.Qf6#
      • 1...Kf7
        • 2.Qe6#
      • 1...Bxh6
        • 2.Bh5#
      • 1...Ba3
        • 2.Qg7#
      • 1...Bb4
        • 2.Qg7#
      • 1...Bc5
        • 2.Qg7#
      • 1...Bd6
        • 2.Qg7#
      • 1...Be7
        • 2.Qg7#
      • 1...Bg7
        • 2.Qxg7#

Anticipated by 175411(1899), 23798(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • B(c);N_GUARD::QAR1(B)
      • Refutation
        • B(c);XP(D)
    • Try
      • B(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • Q(B);
      • Threat
        • B(C)
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • B(c);XP(D)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • B(C);
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR2(B)
      • K(a);S_FLIGHT::QAB1(B)
      • B(c);SBLOCK,XP(D)::B(C)
      • B(c);N_GUARD::QAR1(B)
      • B(c);N_GUARD::QAR1(B),XB(c)
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