MESON Chess Problem Database

Problem Display
PID: 270347 (nr6/3N1N2/r2p4/5p1P/pQB1bk2/4pP2/7K/5R2 w - - 0 1)

Boswell, Edward

Sunday Referee, 1931

(First published on Sun Aug 9 1931)

nr6/3N1N2/r2p4/5p1P/pQB1bk2/4pP2/7K/5R2

#2

8 + 9

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxd6#
    • 1...Bxf3
      • 2.Bb5#
    • 1...Bc6
      • 2.Qxd6#
    • 1...Bb7
      • 2.Bd5#
    • 1...Sb6
      • 2.Qxd6#
    • 1...e2
      • 2.Qd2#
  • Keys
    • 1.Sf6!
      • threat
        • 2.fxe4#
      • 1...Bxf3
        • 2.Bb5#
      • 1...e2
        • 2.Qd2#
      • 1...Bb1
        • 2.Sd5#
      • 1...Bc2
        • 2.Sd5#
      • 1...Bd3
        • 2.Sd5#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Bc6
        • 2.Qxd6#
      • 1...Bb7
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::QAB(D),XP(g)
    • B(c);OGATEB,P_SPINB(c),XP(C)::QAR(D)+B(E)
    • B(c);S_CUTR(f)::QAB(D),XP(g)
    • B(c);OGATEB::QAR(D)+B(E)
    • S(h);S_CUTR(f)::QAB(D),XP(g)
    • P(a);OGATEB::QAB(D)
  • Actual
    • S(G);
    • Threat
      • R(A)+P(C),XB(c)
    • Vars
      • B(c);OGATEB,P_SPINB(c),XP(C)::QAR(D)+B(E)
      • P(a);OGATEB::QAB(D)
      • B(c);N_GUARD::S(G)
      • B(c);N_GUARD::S(G),XB(c)
      • B(c);S_CUTR(f)::QAB(D),XP(g)
      • B(c);OGATEB::QAR(D)+B(E)
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