MESON Chess Problem Database

Problem Display
PID: 22533 (b7/8/8/4Q3/8/5kBK/8/2bN4 w - - 0 1)

Siotis, Nikos

The Problemist, 1980

b7/8/8/4Q3/8/5kBK/8/2bN4

#2

4 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qe3#
    • 1...Ba3
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Be4
      • 2.Qh5#
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qe2#
      • 1...Be4
        • 2.Qxe4#
      • 1...Be3
        • 2.Qh5#

Anticipated by 93210(1961)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR1(D)
    • B(a);N_GUARD::QAR1(D),XB(a)
    • B(c);SBLOCK::QAB(D)
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • B(c);N_GUARD::QAB1(D),XB(c)
      • B(a);SBLOCK::QAB(D)
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