MESON Chess Problem Database

Problem Display
PID: 76587 (8/1p1B2n1/5pK1/1ppk1N2/1r2R3/b1R1B1Q1/3n2b1/5rq1 w - - 0 1)

Holladay, Edgar Dinwiddie

HM., Parallele 50, 1948

8/1p1B2n1/5pK1/1ppk1N2/1r2R3/b1R1B1Q1/3n2b1/5rq1

#2

7 + 12

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Qd6#
    • 1...Bxe4
      • 2.Rxc5#
    • 1...Sxe4
      • 2.Se7#
  • Tries
    • 1.Bc6+?
      • 1...Kxc6
        • 2.Qd6#
      • 1...bxc6!
    • 1.Be6+?
      • 1...Kxe4
        • 2.Sd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...Sxe6!
  • Keys
    • 1.Bc8!
      • threat
        • 2.Bxb7#
      • 1...Kxe4
        • 2.Bxb7#
      • 1...Kc6
        • 2.Qd6#
      • 1...Rxe4
        • 2.Qd6#
      • 1...Bxe4
        • 2.Rxc5#
      • 1...Sxe4
        • 2.Se7#
      • 1...b6
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,XR(D)::QAR1(C)
    • B(d);P_PINQ(C),P_PINS(E),SBLOCK,XR(D)::R1(A),XP(h)
    • S(c);SBLOCK,XR(D)::S(E)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(i);P_SPINP(h),S_FLIGHT,XB(G)::QAR1(C)
      • Refutation
        • P(k);XB(G)
    • Try
      • B(G);CHECK
      • Vars
        • K(i);S_FLIGHT,XR(D)::S(E)
        • K(i);P_SPINP(h),S_FLIGHT::QAR1(C)
      • Refutation
        • S(l);XB(G)
  • Actual
    • B(G);
    • Threat
      • B(G),XP(k)
    • Vars
      • K(i);S_FLIGHT,XR(D)::B(G),XP(k)
      • K(i);P_SPINP(h),S_FLIGHT::QAR1(C)
      • R(f);SBLOCK,XR(D)::QAR1(C)
      • B(d);P_PINQ(C),P_PINS(E),SBLOCK,XR(D)::R1(A),XP(h)
      • S(c);SBLOCK,XR(D)::S(E)
      • P(k);::B(G)
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