MESON Chess Problem Database

Problem Display
PID: 269834 (5K2/2p1BNp1/R1Q1P2b/1R2Nkr1/4p1p1/p3P2P/8/8 w - - 0 1)

Smith, James Alfred John

Sunday Referee, 1931

(First published on Sun Feb 8 1931)

5K2/2p1BNp1/R1Q1P2b/1R2Nkr1/4p1p1/p3P2P/8/8

#2

10 + 8

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.hxg4#
    • 1...Rg6
      • 2.Sd3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Sxg4#
      • 2.Sd7#
    • 1...g6+
      • 2.Sxh6#
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Qxe4#
        • 2.hxg4#
      • 1...Bxg5
        • 2.hxg4#
      • 1...gxh3
        • 2.Qxe4#
      • 1...g3
        • 2.Qxe4#
      • 1...g6+!
    • 1.Sd6+?
      • 1...Kxe6
        • 2.Qd5#
        • 2.Qd7#
        • 2.Qc4#
      • 1...cxd6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qf1#
      • 1...g6+
        • 2.Sxh6#
      • 1...Rh5
        • 2.hxg4#
      • 1...Rg6
        • 2.Sc6#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::P(B),XP(c)
    • P(h);CHECK,N_GUARD::S(I),XB(f)
  • Tries
    • Try
      • S(I);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XS(I)::P(B),XP(c)
        • P(c);XP(B)::QAB1(F),XP(b)
        • P(c);::QAB1(F),XP(b)
      • Refutation
        • P(h);CHECK
    • Try
      • S(I);CHECK
      • Refutation
        • P(g);XS(I)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)
    • Vars
      • P(h);CHECK,N_GUARD::S(I),XB(f)
      • R(e);N_GUARD::P(B),XP(c)
      • R(e);SBLOCK::R(C)+S(D)
      • P(g);N_GUARD::S(I)
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