MESON Chess Problem Database

Problem Display
PID: 234796 (8/8/1p1p4/2QB4/k7/1N6/8/3K4 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2017

8/8/1p1p4/2QB4/k7/1N6/8/3K4

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3+?
      • 1...Kb5
        • 2.Sd4#
      • 1...Kxa3!
    • 1.Qd4+?
      • 1...Kb5
        • 2.Qc4#
      • 1...Ka3!
  • Keys
    • 1.Qc3!
      • 1...Ka3
        • 2.Sc5#
      • 1...Kb5
        • 2.Qc4#
      • 1...b5
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR(C)+S(B)
      • K(a);S_FLIGHT::QAB1(C)
      • P(b);N_GUARD::QAR1(C)
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