MESON Chess Problem Database

Problem Display
PID: 77352 (8/8/4K1P1/B4N1b/3P3b/1B5Q/1nn1kp2/5R2 w - - 0 1)

Holladay, Edgar Dinwiddie

Moore, Robert Clyde

Northwest Chess, 1977

8/8/4K1P1/B4N1b/3P3b/1B5Q/1nn1kp2/5R2

#2

8 + 6

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Bc4#
    • 1...Sa4
      • 2.Bc4#
    • 1...Sc4
      • 2.Bxc4#
    • 1...Sxd4+
      • 2.Sxd4#
  • Tries
    • 1.Bc4+?
      • 1...Sd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...Sxc4!
  • Keys
    • 1.Rd1!
      • 1...Sxd4+
        • 2.Sxd4#
      • 1...Kxd1
        • 2.Qf1#
      • 1...Bxg6
        • 2.Qg4#
      • 1...Sxd1
        • 2.Bc4#
      • 1...Bg3
        • 2.Qxh5#
      • 1...f1Q
        • 2.Qxf1#
      • 1...f1S
        • 2.Qxf1#
      • 1...f1B
        • 2.Qxf1#
      • 1...f1R
        • 2.Qxf1#
      • 1...Bg5
        • 2.Qxh5#
      • 1...Bf6
        • 2.Qxh5#
      • 1...Be7
        • 2.Qxh5#
      • 1...Bd8
        • 2.Qxh5#
      • 1...Bf3
        • 2.Qf1#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Sc4
        • 2.Qd3#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Rd2#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 19
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(B)
    • S(a);N_GUARD::B(B),XS(a)
    • S(b);CHECK,XP(D)::S(F),XS(b)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • S(a);XB(B)
  • Actual
    • R(A);
    • Vars
      • S(b);CHECK,XP(D)::S(F),XS(b)
      • K(c);P_SPINS(b),S_FLIGHT,XR(A)::QAR2(C)
      • B(f);N_GUARD,XP(H)::QAB(C)
      • S(a);N_GUARD,SBLOCK,XR(A)::B(B)
      • B(e);OGATE::QAB(C),XB(f)
      • P(d);::QAB1(C),XQ(d)
      • P(d);::QAB1(C),XS(d)
      • P(d);::QAB1(C),XB(d)
      • P(d);::QAB1(C),XR(d)
      • B(f);SBLOCK::QAB1(C)
      • B(f);N_GUARD,P_PINS(F)::QAB(C),XB(f)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAR1(C)
      • S(b);SBLOCK::R1(A)
      • S(b);N_GUARD::QAR1(C),XS(b)
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