MESON Chess Problem Database

Problem Display
PID: 240460 (K3Q3/8/1kB5/8/6R1/8/8/8 w - - 0 1)

Parkhomenko, Nikolai A

Problemas, 1995

K3Q3/8/1kB5/8/6R1/8/8/8

#2

4 + 1

15148 Sadier Collection 2021
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Bb5?
      • 1...Kc5
        • 2.Qc6#
      • 1...Kc7
        • 2.Qb8#
      • 1...Ka5!
    • 1.Qd7?
      • 1...Ka5
        • 2.Qa7#
      • 1...Ka6
        • 2.Qa7#
      • 1...Kc5!
    • 1.Qe5?
      • 1...Ka6
        • 2.Qb5#
      • 1...Kxc6!
    • 1.Qe7?
      • 1...Ka5
        • 2.Qa7#
      • 1...Ka6
        • 2.Qa7#
      • 1...Kxc6!
  • Keys
    • 1.Ba4!
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qc6#
      • 1...Ka6
        • 2.Qb5#
      • 1...Kc7
        • 2.Qb8#

Anticipated by 144365(1898), 37981(1923)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);P-FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAB1(D)
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