MESON Chess Problem Database

Problem Display
PID: 161748 (5QK1/8/8/3k4/8/1R6/5N2/B7 w - - 0 1)

Aizikowicz, Jakov

Shahmat, 1974

5QK1/8/8/3k4/8/1R6/5N2/B7

#2

5 + 1

5454 Near Snap 2017
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Kxd6!
  • Keys
    • 1.Se4!
      • 1...Kc4
        • 2.Qf7#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qf7#

Anticipated by 95240(1911), 18738(1957)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::QAB(D)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::QAB1(D)
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