MESON Chess Problem Database

Problem Display
PID: 60943 (r3k3/P1pR3p/8/4NN2/6B1/8/7p/3KR3 w q - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1946

r3k3/P1pR3p/8/4NN2/6B1/8/7p/3KR3

#2

7 + 5

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.axb8Q#
      • 2.axb8R#
  • Tries
    • 1.Sf7+?
      • 1...Kxd7
        • 2.Sd4#
      • 1...Kf8!
    • 1.Sd6+?
      • 1...cxd6
        • 2.Sg6#
      • 1...Kf8!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rg8#
      • 1...Rd8+
        • 2.Sd7#
      • 1...0-0-0+
        • 2.Sd6#
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf8
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(d);OGATE::PXR(d)=Q
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(G)::B(C)+S(E)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • P(b);XS(E)::R(B)+S(D)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • R(G);
    • Threat
      • R(G)
    • Vars
      • R(d);CHECK,SBLOCK::R(B)+S(D)
      • K(e);0-0-0,CHECK::B(C)+S(E),DCHECK
      • K(e);P-FLIGHT::R(G)
      • K(e);P-FLIGHT::S(D)
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