MESON Chess Problem Database

Problem Display
PID: 120128 (b7/8/2k5/8/K7/4Q2B/7B/8 w - - 0 1)

Teed, Frank Melville

American Chess Bulletin, 1904

b7/8/2k5/8/K7/4Q2B/7B/8

#2

4 + 2

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Kb4?
      • 1...Kd5
        • 2.Bg2#
      • 1...Bb7
        • 2.Qc5#
        • 2.Qe6#
      • 1...Kb7!
    • 1.Qc5+?
      • 1...Kb7
        • 2.Bc8#
      • 1...Kxc5!
    • 1.Qe6+?
      • 1...Kc5
        • 2.Bg1#
      • 1...Kb7!
  • Keys
    • 1.Bg1!
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kb7
        • 2.Qb6#
      • 1...Kc7
        • 2.Qb6#
      • 1...Bb7
        • 2.Qc5#

This anticipates 158163(1906-1907), 146413(1920)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
      • B(b);SBLOCK::QAR1(B)
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