MESON Chess Problem Database

Problem Display
PID: 34906 (8/8/4K3/8/1B1k4/5Q2/8/8 w - - 0 1)

Kasahara, Saburou

Problem Paradise, 1999

8/8/4K3/8/1B1k4/5Q2/8/8

#2

3 + 1

5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Kd7?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kc4!
    • 1.Ke7?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kc4!
    • 1.Be1?
      • 1...Kc4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Bd2?
      • threat
        • 2.Qd5#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kc5!
  • Keys
    • 1.Ba5!
      • 1...Kc4
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#

Anticipated by 241769(1928), 237312(1967)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
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