MESON Chess Problem Database

Problem Display
PID: 17484 (b1R5/4p3/2n1B3/brnqp3/2krN1R1/B2p1N2/1PP1P3/4Q2K w - - 0 1)

Holladay, Edgar Dinwiddie

HM., BCPS, 1947-1948

b1R5/4p3/2n1B3/brnqp3/2krN1R1/B2p1N2/1PP1P3/4Q2K

#2

11 + 11

3174 The Two-move Chess Problem Tradition and Development 1966
6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sfxd2#
      • 2.Sexd2#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bb6
      • 2.Sfd2#
      • 2.Sed2#
      • 2.Qc3#
    • 1...Bc7
      • 2.Sfd2#
      • 2.Sed2#
      • 2.Qc3#
    • 1...Bd8
      • 2.Sfd2#
      • 2.Sed2#
      • 2.Qc3#
    • 1...Sb3
      • 2.Sxe5#
    • 1...Sa4
      • 2.Sxe5#
    • 1...Sxe4
      • 2.Sxe5#
    • 1...Sa6
      • 2.Sxe5#
    • 1...Sb7
      • 2.Sxe5#
    • 1...Sb4
      • 2.Sfd2#
      • 2.Sxe5#
      • 2.Sed2#
      • 2.Qc3#
      • 2.b3#
    • 1...Sa7
      • 2.Sxe5#
    • 1...Sb8
      • 2.Sxe5#
    • 1...Sd8
      • 2.Sxe5#
  • Tries
    • 1.Bxd5+?
      • 1...Rxd5
        • 2.Sed2#
        • 2.Sd6#
      • 1...Kxd5!
    • 1.b3+?
      • 1...Sxb3
        • 2.Sxe5#
      • 1...Rxb3!
    • 1.exd3+?
      • 1...Rxd3
        • 2.Sed2#
        • 2.Sd6#
      • 1...Sxd3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Bxd5#
      • 1...Qxe6
        • 2.Sd2#
      • 1...Bxc3
        • 2.Qxc3#
      • 1...Sxe6
        • 2.exd3#
      • 1...Sb3
        • 2.cxd3#
        • 2.exd3#
      • 1...Sa4
        • 2.exd3#
      • 1...Se4
        • 2.Sxe5#
      • 1...Sa6
        • 2.exd3#
      • 1...Sb7
        • 2.exd3#
      • 1...Sd7
        • 2.exd3#
      • 1...Sb4
        • 2.b3#
      • 1...Sa7
        • 2.exd3#
      • 1...Sb8
        • 2.exd3#
      • 1...Sd8
        • 2.exd3#
      • 1...e4
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(d);N_GUARD::QAR1(A),XB(d)
    • S(f);P_SPINS(i)::S(G),XP(h)
    • S(f);P_SPINS(i),XS(H)::S(G),XP(h)
    • S(i);N_GUARD,P_SPINS(f)::S(G),XP(h)
  • Tries
    • Try
      • B(J);CHECK,XQ(g)
      • Refutation
        • K(b);S_FLIGHT,XB(J)
    • Try
      • P(C);CHECK
      • Vars
        • S(f);P_SPINS(i),XP(C)::S(G),XP(h)
      • Refutation
        • R(e);XP(C)
    • Try
      • P(E);CHECK,XP(a)
      • Refutation
        • S(f);P_SPINS(i),XP(E)
  • Actual
    • S(H);P_PINR(c),P_SPINS(G)
    • Threat
      • B(J),XQ(g)
    • Vars
      • Q(g);N_PINS(G),N_SPINQ(g),XB(J)::S(G)
      • B(d);OGATE,XS(H)::QAR1(A),XB(d)
      • S(f);N_GUARD,N_SPINQ(g),P_SPINS(i),XB(J)::P(E),XP(a)
      • S(f);N_GUARD,P_SPINS(i)::P(E),XP(a)
      • S(f);N_PINS(G),N_SPINR(c),P_SPINS(i)::S(G),XP(h)
      • S(i);P_SPINS(f),S_CUTR(e)::P(C)
      • S(i);P_SPINS(f)::P(E),XP(a)
      • P(h);N_PINS(G),N_SPINR(c)::S(G)
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