MESON Chess Problem Database

Problem Display
PID: 76582 (8/6N1/1B5n/4p3/4BkbP/4r3/6QP/6NK w - - 0 1)

Holladay, Edgar Dinwiddie

American Chess Bulletin, 1948

8/6N1/1B5n/4p3/4BkbP/4r3/6QP/6NK

#2

8 + 5

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.hxg3#
    • 1...Rxe4
      • 2.Qg3#
    • 1...Bd1
      • 2.Se6#
    • 1...Be2
      • 2.Se6#
    • 1...Bh3
      • 2.Sh5#
    • 1...Bf5
      • 2.Sh5#
    • 1...Bh5
      • 2.Sxh5#
      • 2.Se6#
    • 1...Be6
      • 2.Sh5#
      • 2.Sxe6#
    • 1...Bd7
      • 2.Sh5#
    • 1...Bc8
      • 2.Sh5#
    • 1...Sf5
      • 2.Se6#
  • Tries
    • 1.Se2+?
      • 1...Bxe2
        • 2.Se6#
      • 1...Rxe2!
    • 1.Sh3+?
      • 1...Bxh3
        • 2.Sh5#
      • 1...Rxh3!
  • Keys
    • 1.Bf5!
      • 1...Bxf5
        • 2.Sh5#
      • 1...Sxf5
        • 2.Se6#
      • 1...e4
        • 2.Bc7#
      • 1...Sf7
        • 2.Qxg4#
      • 1...Re1
        • 2.Qg3#
      • 1...Re2
        • 2.Qg3#
      • 1...Ra3
        • 2.Qe4#
      • 1...Rb3
        • 2.Qe4#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Rf3
        • 2.Se2#
      • 1...Rg3
        • 2.Qe4#
        • 2.Qxg3#
        • 2.hxg3#
      • 1...Rh3
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
        • 2.Qg3#
      • 1...Bd1
        • 2.Qg5#
      • 1...Be2
        • 2.Qg5#
      • 1...Bf3
        • 2.Sh3#
      • 1...Bh3
        • 2.Qg5#
      • 1...Bh5
        • 2.Qg5#
      • 1...Sg8
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 13
    • REMOVED MATES = 4
  • Sets
    • R(a);OGATE::P(D),XR(a)
    • R(a);N_GUARD,SBLOCK,XB(E)::QAB1(C)
    • B(c);N_GUARD::S(H)
    • S(e);S_CUTB(c)::S(H)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • B(c);XS(A)::S(H)
      • Refutation
        • R(a);XS(A)
    • Try
      • S(A);CHECK
      • Vars
        • B(c);XS(A)::S(H)
      • Refutation
        • R(a);P_PINP(D),XS(A)
  • Actual
    • B(E);
    • Vars
      • B(c);N_GUARD,SBLOCK,XB(E)::S(H)
      • S(e);SBLOCK,XB(E)::S(H)
      • P(d);OGATEB::B(G)
      • S(e);N_GUARD::QAR1(C),XB(c)
      • R(a);N_GUARD,P_PINS(A)::QAB1(C)
      • R(a);N_GUARD::QAB1(C)
      • R(a);N_GUARD::QAR1(C)
      • R(a);N_GUARD,S_CUTB(c)::S(A)
      • R(a);N_GUARD,P_PINP(D)::QAR1(C)
      • B(c);OGATE::QAB1(C)
      • B(c);N_GUARD,P_PINQ(C),S_CUTR(a)::S(A)
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