MESON Chess Problem Database

Problem Display
PID: 76504 (8/1N3N2/8/np1k1p2/5p2/1q3b2/Q1R1RB2/3K2nB w - - 0 1)

Holladay, Edgar Dinwiddie

Comm., British Chess Magazine, 1947

8/1N3N2/8/np1k1p2/5p2/1q3b2/Q1R1RB2/3K2nB

#2

8 + 8

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2
      • 2.Rc5#
    • 1...Bxh1
      • 2.Re5#
    • 1...Bg2
      • 2.Re5#
    • 1...Sh3
      • 2.Bxf3#
    • 1...Sc6
      • 2.Qxb3#
    • 1...Sxb7
      • 2.Qxb3#
    • 1...b4
      • 2.Qxa5#
  • Tries
    • 1.Sxa5?
      • threat
        • 2.Qxb3#
      • 1...Qxa2
        • 2.Rc5#
      • 1...Qc4
        • 2.Rd2#
      • 1...Sxe2!
    • 1.Qxb3+?
      • 1...Sc4
        • 2.Qxb5#
      • 1...Sxb3!
  • Keys
    • 1.Sbd8!
      • 1...Qxa2
        • 2.Rc5#
      • 1...Bxh1
        • 2.Re5#
      • 1...Sxe2
        • 2.Bxf3#
      • 1...Qc4
        • 2.Rd2#
      • 1...Bg2
        • 2.Re5#
      • 1...Be4
        • 2.Rd2#
      • 1...Sh3
        • 2.Bxf3#
      • 1...Sc4
        • 2.Qa8#
      • 1...Sc6
        • 2.Qxb3#
      • 1...Sb7
        • 2.Qxb3#
      • 1...b4
        • 2.Qxa5#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINR(D),N_SPINQ(b),P_PINR(E),XQ(C)::R1(D)
    • B(c);N_SPINB(c),OGATE,XB(B)::R1(E)
    • B(c);OGATE::R1(E)
    • S(a);N_GUARD::B(B),XB(c)
    • S(e);N_GUARD::QAB(C),XQ(b)
    • S(e);N_GUARD,XS(G)::QAB(C),XQ(b)
    • P(f);OGATEB::QAR(C),XS(e)
  • Tries
    • Try
      • S(G);XS(e)
      • Threat
        • QAB(C),XQ(b)
      • Vars
        • Q(b);N_PINR(D),N_SPINQ(b),P_PINR(E),XQ(C)::R1(D)
        • Q(b);N_PINR(D),P_PINR(E)::R(D)
      • Refutation
        • S(a);XR(E)
    • Try
      • Q(C);CHECK,N_SPINR(D),P_SPINR(E),XQ(b)
      • Vars
        • S(e);P_SPINS(e)::QAR2(C),XP(f)
      • Refutation
        • S(e);XQ(C)
  • Actual
    • S(G);
    • Vars
      • Q(b);N_PINR(D),N_SPINQ(b),P_PINR(E),XQ(C)::R1(D)
      • B(c);N_SPINB(c),OGATE,XB(B)::R1(E)
      • S(a);N_GUARD,XR(E)::B(B),XB(c)
      • Q(b);N_PINR(D),P_PINR(E)::R(D)
      • B(c);OGATE::R1(E)
      • B(c);OGATE::R(E)
      • S(a);N_GUARD::B(B),XB(c)
      • S(e);N_SPINQ(b),OGATE::QAB(C)
      • S(e);N_GUARD::QAB(C),XQ(b)
      • P(f);OGATEB::QAR(C),XS(e)
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