MESON Chess Problem Database

Problem Display
PID: 29055 (6b1/8/8/8/8/p7/4R3/knQ3K1 w - - 0 1)

Godbout, Alain J

Le Droit, 1980

6b1/8/8/8/8/p7/4R3/knQ3K1

#2

3 + 4

3248 Miniatures canadiennes 2000
4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...a2
      • 2.Qb2#
  • Tries
    • 1.Qxa3+?
      • 1...Ba2
        • 2.Rxa2#
        • 2.Qb2#
        • 2.Qxa2#
      • 1...Sxa3!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...Ba2
        • 2.Qc3#
      • 1...Bh7
        • 2.Qxa3#
      • 1...a2
        • 2.Qc3#

Anticipated by 121513(1947), 78601(1967)

This anticipates 200425(1999)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK,N_PINS(b),XP(c)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • R(C);
    • Threat
      • QAR1(A),XS(b)
    • Vars
      • K(a);N_SPINS(b),P-FLIGHT::QAB1(A),XS(b)
      • B(d);SBLOCK::QAB(A)
      • B(d);N_GUARD::QAR2(A),XP(c)
      • P(c);SBLOCK::QAB(A)
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