MESON Chess Problem Database

Problem Display
PID: 158307 (1K6/1B6/1B6/8/1Q6/8/4k3/8 w - - 0 1)

van Dijk, Johannes

British Chess Magazine 13. Ty., 1906-1907

1K6/1B6/1B6/8/1Q6/8/4k3/8

#2

4 + 1

5454 Near Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qd2+?
      • 1...Kf1
        • 2.Bg2#
        • 2.Ba6#
        • 2.Qd1#
        • 2.Qf2#
      • 1...Kxd2!
    • 1.Qc3?
      • 1...Kd1
        • 2.Bf3#
      • 1...Kf1!
    • 1.Qd6?
      • 1...Kf1
        • 2.Qd1#
      • 1...Ke1!
    • 1.Qd4?
      • 1...Kf1
        • 2.Qf2#
        • 2.Qd1#
      • 1...Ke1!
  • Keys
    • 1.Ba5!
      • 1...Kd1
        • 2.Qd2#
      • 1...Kf1
        • 2.Qe1#
      • 1...Kf2
        • 2.Qe1#
      • 1...Kd3
        • 2.Qe4#
      • 1...Ke3
        • 2.Qd2#

Anticipated by 2392(0000), 120940(1877), 222385(1884), 222932(1885)

This anticipates 184881(1908), 189438(1911), 189685(1912), 178322(1928), 96980(1943)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAB1(A)
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