MESON Chess Problem Database

Problem Display
PID: 267847 (8/3Br1nQ/8/p1n3N1/1N1B1k1K/4p2P/q3P3/8 w - - 0 1)

Snowdon, G (Jr)

The Referee, 1928

(First published on Sun Jun 17 1928)

8/3Br1nQ/8/p1n3N1/1N1B1k1K/4p2P/q3P3/8

#2

8 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sd5#
    • 1...Qd5
      • 2.Sxd5#
    • 1...Qa1
      • 2.Sd5#
    • 1...Qb2
      • 2.Sd5#
    • 1...Qc2
      • 2.Sd5#
    • 1...Qd2
      • 2.Sd5#
    • 1...Qxe2
      • 2.Sd5#
    • 1...Qa3
      • 2.Sd5#
    • 1...Qa4
      • 2.Sd5#
    • 1...Sb3
      • 2.Sd3#
      • 2.Sd5#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sa4
      • 2.Sd3#
    • 1...Se4
      • 2.Sd3#
    • 1...Sa6
      • 2.Sd3#
    • 1...Sce6
      • 2.Sd3#
      • 2.Qe4#
    • 1...Sb7
      • 2.Sd3#
    • 1...Sxd7
      • 2.Sd3#
    • 1...Sf5+
      • 2.Qxf5#
    • 1...Sh5
      • 2.Qf5#
    • 1...Se8
      • 2.Qf5#
  • Tries
    • 1.Qe4+?
      • 1...Sxe4
        • 2.Sd3#
      • 1...Rxe4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qf1#
      • 1...Sf5+
        • 2.Qxf5#
      • 1...Qxb1
        • 2.Sd5#
      • 1...Qxe2
        • 2.Sd5#
      • 1...Qd5
        • 2.Sxd5#
      • 1...Qa1
        • 2.Sd5#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Se4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD::S(C),XQ(a)
    • Q(a);N_GUARD,XP(A)::S(C)
    • S(e);N_GUARD::S(C),XS(e)
    • S(e);N_GUARD::S(C)
    • S(e);N_GUARD,XB(G)::S(C)
    • S(g);CHECK,N_GUARD::QAR1(H),XS(g)
    • S(g);N_GUARD::QAR1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • S(e);XQ(H)::S(C)
      • Refutation
        • R(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)
    • Vars
      • S(g);CHECK,N_GUARD::QAR1(H),XS(g)
      • Q(a);N_GUARD,XQ(H)::S(C)
      • Q(a);N_GUARD,XP(A)::S(C)
      • Q(a);N_GUARD::S(C),XQ(a)
      • Q(a);N_GUARD::S(C)
      • S(e);N_GUARD::S(C),XS(e)
      • S(e);N_GUARD::S(C)
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