MESON Chess Problem Database

Problem Display
PID: 234446 (7N/8/1Q6/6N1/5pkp/8/5K2/8 w - - 0 1)

Lincoln, Robert A

ChessStar, 2012

7N/8/1Q6/6N1/5pkp/8/5K2/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg5
      • 2.Qg6#
  • Tries
    • 1.Qe6+?
      • 1...Kxg5
        • 2.Qg6#
      • 1...Kh5!
    • 1.Qg6?
      • 1...h3
        • 2.Sf3#
      • 1...f3!
  • Keys
    • 1.Sf3!
      • 1...Kh3
        • 2.Qe6#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kh5
        • 2.Qg6#
      • 1...h3
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,XS(B)::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAR(C)+S(B)
      • Refutation
        • P(a);
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • K(b);S_FLIGHT::QAB1(C)
      • P(c);SBLOCK::QAR2(C)
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