MESON Chess Problem Database

Problem Display
PID: 198886 (2b2bK1/1BQp1Ppn/r3krN1/p3Np2/8/8/8/5q2 w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

Brisbane Courier, 1921

2b2bK1/1BQp1Ppn/r3krN1/p3Np2/8/8/8/5q2

#2

6 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb7
      • 2.Qxd7#
    • 1...d5
      • 2.Bxc8#
    • 1...d6
      • 2.Qxc8#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qe5#
      • 1...Qe2
        • 2.Sdf4#
      • 1...Qa1
        • 2.Sdf4#
      • 1...Qe1
        • 2.Sdf4#
      • 1...Qf4
        • 2.Sdxf4#
      • 1...Rd6
        • 2.Sc5#
      • 1...Bd6
        • 2.Qc4#
      • 1...d5
        • 2.Bxc8#
      • 1...d6
        • 2.Qxc8#

This is a version of 71099

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD,XB(C)::QAB1(D),XP(g)
    • P(g);OGATEB,SBLOCK::B(C),XB(j)
    • P(g);OGATEB,SBLOCK::QAB(D),XB(j)
  • Actual
    • S(A);
    • Threat
      • QAR1(D)
    • Vars
      • Q(a);N_GUARD::S(A)
      • Q(a);N_GUARD::S(A),XQ(a)
      • R(d);S_CUTB(k)::S(A)
      • B(k);SBLOCK,S_CUTP(g)::QAB(D)
      • P(g);OGATEB,SBLOCK::B(C),XB(j)
      • P(g);OGATEB,SBLOCK::QAB(D),XB(j)
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