MESON Chess Problem Database

Problem Display
PID: 60665 (6k1/2PpK1Bp/4p3/R4p1N/1R1Q4/1r6/1nrp4/q7 w - - 0 1)

McIntyre, Donald Glenoe

South African Chess Magazine, 1935

6k1/2PpK1Bp/4p3/R4p1N/1R1Q4/1r6/1nrp4/q7

#2

7 + 10

5639 Some Problems For My Friends 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Ra8#
    • 1...Qc1
      • 2.Ra8#
    • 1...Qd1
      • 2.Ra8#
    • 1...Qe1
      • 2.Ra8#
    • 1...Qf1
      • 2.Ra8#
    • 1...Qg1
      • 2.Ra8#
    • 1...Ra3
      • 2.Rb8#
    • 1...Rc3
      • 2.Rb8#
    • 1...Rd3
      • 2.Rb8#
    • 1...Re3
      • 2.Rb8#
    • 1...Rf3
      • 2.Rb8#
    • 1...Rg3
      • 2.Rb8#
    • 1...Rh3
      • 2.Rb8#
    • 1...Sa4
      • 2.Ra8#
    • 1...Sc4
      • 2.c8Q#
      • 2.c8R#
    • 1...e5
      • 2.Qd5#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sf6#
      • 1...Qxg1
        • 2.Ra8#
      • 1...Sd1
        • 2.Bc3#
      • 1...Rg3
        • 2.Rb8#
      • 1...Sd3
        • 2.Bxa1#
      • 1...Sa4
        • 2.Ra8#
      • 1...Sc4
        • 2.c8Q#
        • 2.c8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::R(C)
    • R(e);N_GUARD::R(A)
    • S(b);S_CUTQ(a)::R(C)
    • S(b);S_CUTR(c)::P=Q
    • P(g);OGATEB::QAB(B)
  • Actual
    • Q(B);
    • Threat
      • S(D)
    • Vars
      • Q(a);N_GUARD,XQ(B)::R(C)
      • S(b);S_CUTQ(a)::QAR(B)+B(G)
      • R(e);N_GUARD::R(A)
      • S(b);OGATE::QAR(B)+B(G),XQ(a)
      • S(b);S_CUTQ(a)::R(C)
      • S(b);S_CUTR(c)::P=Q
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