MESON Chess Problem Database

Problem Display
PID: 77103 (K7/7b/2Bn3B/n2R4/5Pp1/3RqkN1/1b1pNp1Q/1rr5 w - - 0 1)

Holladay, Edgar Dinwiddie

Comm., Chess, 1957

K7/7b/2Bn3B/n2R4/5Pp1/3RqkN1/1b1pNp1Q/1rr5

#2

9 + 11

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Rxd3#
    • 1...Rc3
      • 2.Sd4#
    • 1...Ba3
      • 2.Sd4#
    • 1...Bd4
      • 2.Sxd4#
    • 1...d1S
      • 2.Qh1#
    • 1...d1B
      • 2.Qh1#
    • 1...f1S
      • 2.Sg1#
    • 1...f1B
      • 2.Sg1#
  • Keys
    • 1.f5!
      • threat
        • 2.Rxe3#
      • 1...Qxd3
        • 2.Rxd3#
      • 1...Sxf5
        • 2.Rxf5#
      • 1...d1S
        • 2.Qh1#
      • 1...f1S
        • 2.Sg1#
      • 1...Rc3
        • 2.Sd4#
      • 1...Bd4
        • 2.Sxd4#
      • 1...Sac4
        • 2.Rxd6#
      • 1...Sdc4
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(f);N_SPINQ(f),OGATE,XR(C)::B(G)+R(F),DCHECK,XQ(f)
    • R(b);S_CUTB(c)::S(A)
    • B(c);N_GUARD::S(A)
    • B(c);N_GUARD::S(A),XB(c)
    • P(d);S_CUTR(b)::QAB(B)
    • P(e);N_GUARD,S_CUTR(b)::S(A)
  • Actual
    • P(E);
    • Threat
      • R1(C),XQ(f)
    • Vars
      • Q(f);N_SPINQ(f),OGATE,XR(C)::B(G)+R(F),DCHECK,XQ(f)
      • S(j);OGATE,XP(E)::B(G)+R(F),DCHECK,XS(j)
      • P(d);S_CUTR(b)::QAB(B)
      • P(e);N_GUARD,S_CUTR(b)::S(A)
      • R(b);S_CUTB(c)::S(A)
      • B(c);N_GUARD::S(A),XB(c)
      • S(i);N_GUARD,S_CUTR(b)::B(G)+R(F),XS(j)
      • S(j);N_GUARD,S_CUTR(b)::B(G)+R(F),XS(i)
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