MESON Chess Problem Database

Problem Display
PID: 234871 (n2N4/p7/1k6/8/Q7/3K4/7B/8 w - - 0 1)

Groeneveld, Cornelis

Skakbladet, 2004

n2N4/p7/1k6/8/Q7/3K4/7B/8

#2

4 + 3

15148 Sadier Collection 2021
3713 Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qa5#
    • 1...Sc7
      • 2.Bg1#
  • Tries
    • 1.Qa6+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Kxa6!
  • Keys
    • 1.Bb8!
      • 1...Kc5
        • 2.Qa5#
      • 1...a5
        • 2.Qc6#
      • 1...Sc7
        • 2.Bxa7#
      • 1...a6
        • 2.Qb4#

Anticipated by 121727(1935)

This anticipates 260080(2005)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(C)
    • S(c);SBLOCK::B(A)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR2(C)
      • P(b);SBLOCK::QAR1(C)
      • S(c);SBLOCK::B(A),XP(b)
      • P(b);SBLOCK::QAR2(C)
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