MESON Chess Problem Database

Problem Display
PID: 60950 (r3kB1K/8/n7/3Q1R2/8/7B/b7/8 w q - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

r3kB1K/8/n7/3Q1R2/8/7B/b7/8

#2

5 + 4

5639 Some Problems For My Friends 1957
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bc5?
      • threat
        • 2.Re5#
        • 2.Rf8#
      • 1...Bxd5
        • 2.Rf8#
      • 1...Ra7
        • 2.Rf8#
      • 1...Sc7
        • 2.Rf8#
      • 1...Sxc5!
    • 1.Qxa8+?
      • 1...Kd7
        • 2.Rf7#
      • 1...Sb8!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Rf8#
      • 1...Kd7+
        • 2.Rf8#
      • 1...0-0-0+
        • 2.Rf8#
      • 1...Kd8
        • 2.Rf8#

Anticipated by 17397(1946)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XQ(B)::R1(C)
        • R(c);::R1(C)
        • S(b);::R1(C)
      • Refutation
        • S(b);XB(D)
    • Try
      • Q(B);CHECK,XR(c)
      • Vars
        • K(d);S_FLIGHT::B(A)+R(C),DCHECK
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • B(D);
    • Threat
      • R1(C)
    • Vars
      • K(d);CHECK,S_FLIGHT::B(A)+R(C)
      • K(d);0-0-0,CHECK::B(A)+R(C)
      • K(d);P-FLIGHT::R(C)
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