MESON Chess Problem Database

Problem Display
PID: 208141 (N6r/5p2/b1k5/b5p1/8/B6B/QR6/6K1 w - - 0 1)

Meredith, William

Dubuque Chess Journal, 1875

N6r/5p2/b1k5/b5p1/8/B6B/QR6/6K1

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rb6#
    • 1...Bd2
      • 2.Rb6#
    • 1...Bc3
      • 2.Rb6#
    • 1...Bb6+
      • 2.Rxb6#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bb7
      • 2.Qc4#
    • 1...Bc8
      • 2.Qc4#
    • 1...f5
      • 2.Qe6#
    • 1...f6
      • 2.Qe6#
  • Keys
    • 1.Rb5!
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...Bb6+
        • 2.Rxb6#
      • 1...Kxb5
        • 2.Bd7#
      • 1...Rxh3
        • 2.Qd5#
      • 1...Rxa8
        • 2.Qc4#
      • 1...Bxb5
        • 2.Qg2#
      • 1...Bb4
        • 2.Qd5#
      • 1...g4
        • 2.Qd5#
      • 1...f5
        • 2.Qd5#
      • 1...Rh4
        • 2.Qd5#
      • 1...Rd8
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 7
  • Sets
    • B(a);N_GUARD::R1(C)
    • B(a);CHECK,N_GUARD::R1(C),XB(a)
    • B(c);N_GUARD::QAR2(B),XB(c)
    • B(c);N_GUARD::QAR2(B)
    • P(e);N_GUARD::QAR2(B)
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • B(a);CHECK,N_GUARD::R1(C),XB(a)
      • K(d);S_FLIGHT,XR(C)::B(E)
      • R(f);XB(E)::QAB1(B)
      • R(f);XS(F)::QAR2(B)
      • B(c);SBLOCK,XR(C)::QAB(B)
      • B(a);::QAB1(B)
      • P(b);::QAB1(B)
      • P(e);::QAB1(B)
      • R(f);::QAB1(B)
      • R(f);::QAR2(B)
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