MESON Chess Problem Database

Problem Display
PID: 18068 (4K1B1/7Q/b1pRN3/5n2/2Rpk3/2B5/q1p2P2/4r1N1 w - - 0 1)

Holladay, Edgar Dinwiddie

2nd Prize, Christian Science Monitor, 1952-1953

4K1B1/7Q/b1pRN3/5n2/2Rpk3/2B5/q1p2P2/4r1N1

#2

9 + 8

56 The Problemist 1954
3105 FIDE Album (1945-1955) 1964
1542 Chess Life & Review 1970
6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Rdxd4#
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qxf5#
      • 1...Kd3+
        • 2.Sde2#
      • 1...Kf4+
        • 2.Se6#
      • 1...Ke5
        • 2.Sxf5#
      • 1...Qa5
        • 2.Sb5#
      • 1...Bc8
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);P_PINS(F),S_FLIGHT::R1(E),XP(d)
  • Actual
    • S(F);XP(d)
    • Threat
      • QAB1(G),XS(f)
    • Vars
      • K(e);CHECK,S_FLIGHT::R(E)+S(F)
      • K(e);CHECK,N_SPINS(f),P-FLIGHT::R(D)+S(F),DCHECK
      • K(e);N_SPINS(f),P-FLIGHT::B(C)+S(F),XS(f)
      • Q(b);N_GUARD::R(D)+S(F)
      • B(g);N_GUARD::R(D)+S(F)
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