MESON Chess Problem Database

Problem Display
PID: 16765 (BQN2R2/B2N4/8/3P2rn/2p1kbP1/p3pp1K/4PP2/qb6 w - - 0 1)

Holladay, Edgar Dinwiddie

3rd HM., American Chess Bulletin, 1943

BQN2R2/B2N4/8/3P2rn/2p1kbP1/p3pp1K/4PP2/qb6

#2

11 + 10

5088 How to Solve Chess Problems 1945

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxb1#
    • 1...Qf6
      • 2.Qxb1#
    • 1...Qg7
      • 2.Qxb1#
    • 1...Qh8
      • 2.Qxb1#
    • 1...Rxg4
      • 2.d6#
    • 1...Re5
      • 2.Sd6#
    • 1...Rg6
      • 2.d6#
    • 1...Rg7
      • 2.d6#
    • 1...Rg8
      • 2.d6#
    • 1...Be5
      • 2.d6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Sg3
      • 2.Rxf4#
      • 2.Qxf4#
    • 1...Sg7
      • 2.Rxf4#
      • 2.Qxf4#
    • 1...c3
      • 2.Qb4#
  • Tries
    • 1.Re8+?
      • 1...Qe5
        • 2.Sd6#
        • 2.Qxb1#
        • 2.d6#
      • 1...Re5
        • 2.Sd6#
        • 2.d6#
      • 1...Be5!
    • 1.Qe5+?
      • 1...Rxe5
        • 2.Sd6#
      • 1...Bxe5
        • 2.d6#
      • 1...Qxe5!
  • Keys
    • 1.Se5!
      • threat
        • 2.exf3#
      • 1...Qxe5
        • 2.Qxb1#
      • 1...Rxe5
        • 2.Sd6#
      • 1...Bxe5
        • 2.d6#
      • 1...fxe2
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::QAB(I),XB(b)
    • R(i);N_GUARD,XP(D)::B(H)+P(E)
    • R(i);S_CUTB(h)::S(J)
    • R(i);N_GUARD::B(H)+P(E)
    • B(h);S_CUTR(i)::B(H)+P(E)
    • B(h);N_GUARD::S(J),XB(h)
    • P(f);OGATEB::QAR(I)
  • Tries
    • Try
      • R(K);CHECK
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(I);CHECK
      • Vars
        • R(i);XQ(I)::S(J)
        • B(h);XQ(I)::B(H)+P(E)
      • Refutation
        • Q(a);XQ(I)
  • Actual
    • S(G);
    • Threat
      • P(A),XP(e)
    • Vars
      • Q(a);N_GUARD,SBLOCK,XS(G)::QAB(I),XB(b)
      • R(i);SBLOCK,XS(G)::S(J)
      • B(h);SBLOCK,XS(G)::B(H)+P(E)
      • P(e);OGATE,XP(A)::P(B)
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